{"id":2265802,"date":"2024-03-01T10:30:29","date_gmt":"2024-03-01T18:30:29","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=2265802"},"modified":"2024-08-28T10:35:23","modified_gmt":"2024-08-28T17:35:23","slug":"change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions","title":{"rendered":"Change detection in Map Viewer Part 2: Measuring change with raster functions"},"author":108651,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[22931],"tags":[42641,115262,537362],"industry":[],"product":[767992,36551],"class_list":["post-2265802","blog","type-blog","status-publish","format-standard","hentry","category-imagery","tag-arcgis-online","tag-imagery","tag-raster-function","product-arcgis-image-for-arcgis-online","product-arcgis-online"],"acf":{"short_description":"Raster function templates can measure change between input imagery in ArcGIS Online","flexible_content":[{"acf_fc_layout":"content","content":"

Measuring change over time with satellite data is one way to study the growth of an area and consider its future. For instance, if you were studying drought conditions at Shasta Lake, California over the last twenty years to measure how much has changed. What data might you use? Are there available data and tools in ArcGIS Online to assist the analysis? How would you start?<\/p>\n

In this blog series, there will be two parts that will show you the steps to explore the imagery layer from ArcGIS Living Atlas of the World<\/a>, locate the specific imagery layers at the time periods desired, and then use raster analysis to measure how the area has changed over the last twenty years. This process will be divided between two blogs and feature the Image collection explorer<\/strong> and Raster function editor<\/strong> to complete the analysis.<\/p>\n

This blog will cover the analysis with raster functions in the Raster function editor. The other blog is available through this link (Image collection explorer<\/a>).<\/p>\n

Background<\/h2>\n

In the previous blog, you were able to locate both of the input imagery layers that you will need for your change detection within the USA NLCD Land cover<\/a> imagery layer.\u00a0 Now you are ready to use raster functions to measure the change between the two input imagery layers. For this analysis, there are two raster functions (Compute Change<\/a> and Attribute table<\/a>) that will be combined to create a new raster function template for future analysis.<\/p>\n

Requirements<\/h2>\n

To complete this tutorial, you will need to have an ArcGIS Online account<\/a> to add the USA NLCD Landcover imagery layer to a web map and you will need to have a Professional<\/a>, or Professional Plus<\/a> user type, which you will need to perform raster analysis.<\/p>\n"},{"acf_fc_layout":"content","content":"

The Raster function editor<\/strong> in Map Viewer<\/strong> is used to combine raster functions together to create new imagery layers in ArcGIS Online<\/strong>. Imagery layers can be visualized or analyzed to change characteristics of the imagery layers and create new imagery layers. You can edit an existing raster function template that has been shared or create a new one in the editor. The change you are interested in this scenario is to measure how many areas changed to wetlands or barren lands.<\/p>\n

Steps<\/h2>\n
    \n
  1. Sign into ArcGIS Online<\/strong> and open a new web map.<\/li>\n
  2. In the search bar, type in Shasta lake, California<\/em> and click Enter.
    \nThe web map will zoom to the area around Shasta Lake in preparation to review the input imagery.<\/li>\n
  3. Pan the web map until you see all of Shasta Lake.<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2260562,"id":2260562,"title":"ShastaLake","filename":"ShastaLake.png","filesize":1117877,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-using-image-collection-explorer-to-locate-input-imagery-part-1\/shastalake","alt":"Shasta Lake, California","author":"108651","description":"","caption":"","name":"shastalake","status":"inherit","uploaded_to":2255602,"date":"2024-02-27 18:53:13","modified":"2024-02-27 18:53:31","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1084,"height":681,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake.png","medium-width":415,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake.png","medium_large-width":768,"medium_large-height":482,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake.png","large-width":1084,"large-height":681,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake.png","1536x1536-width":1084,"1536x1536-height":681,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake.png","2048x2048-width":1084,"2048x2048-height":681,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake-740x465.png","card_image-width":740,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ShastaLake.png","wide_image-width":1084,"wide_image-height":681}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

    Now that you have located the map in the study area, you are ready to add the input layers.<\/p>\n

      \n
    1. \n
        \n
      1. If you completed the previous blog, then you can add your imagery layers.
        \nHowever, if you have not, then you can add these two layers to the web map. To locate the imagery layers, type owner:imagery_development_team shasta<\/em> and add both the Shasta NLCD 2001<\/em> and Shasta NLCD 2022<\/em> imagery layers.<\/li>\n
      2. In the Settings<\/strong> toolbar, click the Time slider<\/strong> to turn off time.
        \nThis will allow all of the input imagery layers to be visible, when the Time slider is enabled by default the Shasta NLCD 2022<\/em> imagery layer will not be visible.<\/li>\n
      3. Click Analysis<\/strong> to open the Analysis<\/strong> pane.<\/li>\n
      4. In the Analysis<\/strong> pane from the Home<\/strong> tab, select Raster Functions<\/strong>.<\/li>\n
      5. At the bottom of the Raster Functions<\/strong> pane, click New Raster Function Template<\/strong> to open the Raster Function Editor<\/strong>.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2267002,"id":2267002,"title":"NewRasterFunctionTemplate","filename":"NewRasterFunctionTemplate.png","filesize":40134,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/newrasterfunctiontemplate","alt":"New raster function template button","author":"108651","description":"","caption":"","name":"newrasterfunctiontemplate","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 01:00:30","modified":"2024-02-29 01:10:19","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":362,"height":725,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate.png","medium-width":130,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate.png","medium_large-width":362,"medium_large-height":725,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate.png","large-width":362,"large-height":725,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate.png","1536x1536-width":362,"1536x1536-height":725,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate.png","2048x2048-width":362,"2048x2048-height":725,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate-232x465.png","card_image-width":232,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/NewRasterFunctionTemplate.png","wide_image-width":362,"wide_image-height":725}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"
          \n
        1. \n
            \n
          1. In the Raster Function Editor<\/strong>, click Expand<\/strong> to view the names of each button.<\/li>\n
          2. Click Add raster functions<\/strong> to view a list of available raster functions.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2267052,"id":2267052,"title":"RFeditorAddExpand","filename":"RFeditorAddExpand.png","filesize":55276,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/rfeditoraddexpand","alt":"Expanded raster function editor","author":"108651","description":"","caption":"","name":"rfeditoraddexpand","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 01:20:55","modified":"2024-02-29 01:24:28","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":815,"height":506,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand.png","medium-width":420,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand.png","medium_large-width":768,"medium_large-height":477,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand.png","large-width":815,"large-height":506,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand.png","1536x1536-width":815,"1536x1536-height":506,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand.png","2048x2048-width":815,"2048x2048-height":506,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand-749x465.png","card_image-width":749,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFeditorAddExpand.png","wide_image-width":815,"wide_image-height":506}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"
              \n
            1. \n
                \n
              1. \n
                  \n
                1. From the Add raster functions<\/strong> list, locate Compute Change<\/strong> and click the Add<\/strong> button to add it to the editor.
                  \nThe raster functions in the list are arranged in groups according to their usage. The Compute Change raster function was listed in the Analysis group.<\/li>\n
                2. Scroll down in the list of raster functions, locate the Attribute table<\/strong> function, which is located in the Data Management<\/strong> group, and click Add<\/strong> button.
                  \nBoth raster functions will be added to the editor.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2267072,"id":2267072,"title":"RFE_withFunctions1","filename":"RFE_withFunctions1.png","filesize":21775,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/rfe_withfunctions1","alt":"Raster function template editor with raster functions added","author":"108651","description":"","caption":"","name":"rfe_withfunctions1","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 01:41:39","modified":"2024-02-29 01:42:00","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":625,"height":508,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1.png","medium-width":321,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1.png","medium_large-width":625,"medium_large-height":508,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1.png","large-width":625,"large-height":508,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1.png","1536x1536-width":625,"1536x1536-height":508,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1.png","2048x2048-width":625,"2048x2048-height":508,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1-572x465.png","card_image-width":572,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions1.png","wide_image-width":625,"wide_image-height":508}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"
                    \n
                  1. \n
                      \n
                    1. In the editor, reposition the raster functions so they line up with each other.
                      \nTo reposition the raster functions, hover the cursor over the middle of the raster function until the move icon appears, click the button, and drag the raster function into position.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2267082,"id":2267082,"title":"RFE_withFunctions2","filename":"RFE_withFunctions2.png","filesize":21032,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/rfe_withfunctions2","alt":"Raster functions can be repositioned in the editor by click and drag","author":"108651","description":"","caption":"","name":"rfe_withfunctions2","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 01:56:09","modified":"2024-02-29 01:56:47","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":625,"height":506,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2.png","medium-width":322,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2.png","medium_large-width":625,"medium_large-height":506,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2.png","large-width":625,"large-height":506,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2.png","1536x1536-width":625,"1536x1536-height":506,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2.png","2048x2048-width":625,"2048x2048-height":506,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2-574x465.png","card_image-width":574,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions2.png","wide_image-width":625,"wide_image-height":506}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"
                        \n
                      1. \n
                          \n
                        1. Once you have repositioned the raster functions, hover the cursor over the edge of the Compute Change<\/strong> raster function to see the connector, click the Out<\/strong> connection and drag the connecting line to the Attribute table<\/strong> function.
                          \nYou can also use the search bar within the Raster Functions tool to locate raster functions.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2267102,"id":2267102,"title":"Dragline1","filename":"Dragline1.png","filesize":22230,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/dragline1","alt":"Hover over the edge to see the connector","author":"108651","description":"","caption":"The connector will appear when you hover over the edge. Click and drag to the next raster function. ","name":"dragline1","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 02:01:58","modified":"2024-02-29 02:09:02","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":620,"height":510,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1.png","medium-width":317,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1.png","medium_large-width":620,"medium_large-height":510,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1.png","large-width":620,"large-height":510,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1.png","1536x1536-width":620,"1536x1536-height":510,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1.png","2048x2048-width":620,"2048x2048-height":510,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1-565x465.png","card_image-width":565,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/Dragline1.png","wide_image-width":620,"wide_image-height":510}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"image","image":{"ID":2267162,"id":2267162,"title":"RFE_withFunctions3","filename":"RFE_withFunctions3.png","filesize":24023,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/rfe_withfunctions3","alt":"Raster functions connected in Raster function editor","author":"108651","description":"","caption":"Once connected, the raster functions will have a line between them. ","name":"rfe_withfunctions3","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 02:09:56","modified":"2024-02-29 02:10:33","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":623,"height":511,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3.png","medium-width":318,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3.png","medium_large-width":623,"medium_large-height":511,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3.png","large-width":623,"large-height":511,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3.png","1536x1536-width":623,"1536x1536-height":511,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3.png","2048x2048-width":623,"2048x2048-height":511,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3-567x465.png","card_image-width":567,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions3.png","wide_image-width":623,"wide_image-height":511}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

                          Now that you have connected the two raster functions together, you are ready to add the input imagery layers to the Compute Change function. To see how drought has affected the water, you will concentrate your change detection between the Open Water class (11) and when it changes to Barren lands class (31) or Wetlands class (95).<\/p>\n

                            \n
                          1. \n
                              \n
                            1. Double-click the Compute Change<\/strong> raster function to expand the parameters.<\/li>\n
                            2. Enter the following parameters:<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
                                \n
                              • \n
                                  \n
                                • \n
                                    \n
                                  • From Raster<\/strong> : Shasta NLCD 2001<\/li>\n
                                  • To Raster<\/strong> : Shasta NLCD 2022<\/li>\n
                                  • Compute Change Method<\/strong> : Categorical Difference<\/li>\n
                                  • From Class Values<\/strong> : 11<\/li>\n
                                  • To Class Values<\/strong> : 31 95<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                                      \n
                                    1. \n
                                        \n
                                      1. Click OK.<\/li>\n
                                      2. Click the Auto Layout<\/strong> button to organize the raster functions.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2267252,"id":2267252,"title":"RFE_withFunctions4","filename":"RFE_withFunctions4.png","filesize":34783,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/rfe_withfunctions4","alt":"Raster function template for compute change","author":"108651","description":"","caption":"","name":"rfe_withfunctions4","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 02:51:19","modified":"2024-02-29 02:51:40","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":951,"height":511,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4.png","medium-width":464,"medium-height":249,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4.png","medium_large-width":768,"medium_large-height":413,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4.png","large-width":951,"large-height":511,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4.png","1536x1536-width":951,"1536x1536-height":511,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4.png","2048x2048-width":951,"2048x2048-height":511,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4-826x444.png","card_image-width":826,"card_image-height":444,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFE_withFunctions4.png","wide_image-width":951,"wide_image-height":511}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

                                        Now that you have entered the parameters for the Compute Change<\/strong> raster function, you will also enter parameters for the Attribute Table<\/strong> function.<\/p>\n

                                          \n
                                        1. \n
                                            \n
                                          1. Double-click the Attribute Table<\/strong> function to expand the parameters.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
                                              \n
                                            1. <\/li>\n<\/ol>\n
                                                \n
                                              1. \n
                                                  \n
                                                1. Enter the following parameters:<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
                                                    \n
                                                  • \n
                                                      \n
                                                    • \n
                                                        \n
                                                      • Value<\/strong> : 0 ; ClassName<\/strong> : To Barren lands ; Color<\/strong> : Red<\/li>\n
                                                      • Value<\/strong> : 1 ; ClassName<\/strong> : To Wetlands ; Color<\/strong> : Red<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n"},{"acf_fc_layout":"image","image":{"ID":2268642,"id":2268642,"title":"AttTableSettings2","filename":"AttTableSettings2.png","filesize":21581,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/atttablesettings2","alt":"Attribute Table function parameters","author":"108651","description":"","caption":"","name":"atttablesettings2","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 18:03:01","modified":"2024-02-29 18:03:19","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":522,"height":518,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2.png","medium-width":263,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2.png","medium_large-width":522,"medium_large-height":518,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2.png","large-width":522,"large-height":518,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2.png","1536x1536-width":522,"1536x1536-height":518,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2.png","2048x2048-width":522,"2048x2048-height":518,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2-469x465.png","card_image-width":469,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/AttTableSettings2.png","wide_image-width":522,"wide_image-height":518}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"
                                                          \n
                                                        1. <\/li>\n<\/ol>\n
                                                            \n
                                                          1. \n
                                                              \n
                                                            1. Click OK<\/strong>.
                                                              \nNow that you have entered all the parameters in the raster functions, you are ready to save and run the raster function template.<\/li>\n
                                                            2. Click Open to run<\/strong> to open the raster function template.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2269062,"id":2269062,"title":"OpenToRun","filename":"OpenToRun.png","filesize":6522,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/opentorun","alt":"Open to run button","author":"108651","description":"","caption":"","name":"opentorun","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 20:47:02","modified":"2024-02-29 20:52:48","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":274,"height":175,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun-213x175.png","thumbnail-width":213,"thumbnail-height":175,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun.png","medium-width":274,"medium-height":175,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun.png","medium_large-width":274,"medium_large-height":175,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun.png","large-width":274,"large-height":175,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun.png","1536x1536-width":274,"1536x1536-height":175,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun.png","2048x2048-width":274,"2048x2048-height":175,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun.png","card_image-width":274,"card_image-height":175,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/OpenToRun.png","wide_image-width":274,"wide_image-height":175}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"
                                                                \n
                                                              1. You will be prompted to save the raster function template.<\/li>\n
                                                              2. Click Don’t Save<\/strong> when prompted to save the raster function template. The raster function template will be opened in the Analysis<\/strong> pane with the parameters set in the editor.<\/li>\n
                                                              3. Review the parameters in the raster function template to confirm that you have entered them correctly, scroll down the raster function template until the Preview<\/strong> button is visible, and enable it. A preview of the output will appear in the map.<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2269892,"id":2269892,"title":"PreviewDrought","filename":"PreviewDrought.png","filesize":602100,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/previewdrought","alt":"Preview of results from raster function template","author":"108651","description":"","caption":"The Preview button is available to test your raster function template before running the process. ","name":"previewdrought","status":"inherit","uploaded_to":2265802,"date":"2024-03-01 17:55:58","modified":"2024-03-01 17:56:49","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":992,"height":472,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought.png","medium-width":464,"medium-height":221,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought.png","medium_large-width":768,"medium_large-height":365,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought.png","large-width":992,"large-height":472,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought.png","1536x1536-width":992,"1536x1536-height":472,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought.png","2048x2048-width":992,"2048x2048-height":472,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought-826x393.png","card_image-width":826,"card_image-height":393,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/PreviewDrought.png","wide_image-width":992,"wide_image-height":472}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

                                                                If the preview matches the graphic, then you are ready to create the output imagery layer. Each raster function template run creates a new layer in your ArcGIS Online<\/strong> organization. The preview will allow you to review the output before running your raster function template.<\/p>\n

                                                                  \n
                                                                1. \n
                                                                    \n
                                                                  1. In the Result layer<\/strong> section, type a name for your output like ShastaLC_ change2001_2022<\/strong>.<\/li>\n
                                                                  2. Expand the Environment settings<\/strong> and for Processing Extent<\/strong> select Display Extent<\/strong>. By default, raster analysis tools will choose the full extent of the input layers. Processing the full extent of some input layers may be more costly in credits and processing time, so carefully consider this setting when using raster function templates.<\/li>\n
                                                                  3. Click Estimate credits<\/strong> to see the number of credits estimated for this analysis. For this analysis you can see that it will cost only one credit.<\/li>\n
                                                                  4. Click Run<\/strong> to start the analysis.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2268802,"id":2268802,"title":"LCChangeResults2","filename":"LCChangeResults2.png","filesize":1535351,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/lcchangeresults2","alt":"Results of drought change detection","author":"108651","description":"","caption":"","name":"lcchangeresults2","status":"inherit","uploaded_to":2265802,"date":"2024-02-29 19:20:54","modified":"2024-02-29 19:27:43","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1083,"height":679,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2.png","medium-width":416,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2.png","medium_large-width":768,"medium_large-height":482,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2.png","large-width":1083,"large-height":679,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2.png","1536x1536-width":1083,"1536x1536-height":679,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2.png","2048x2048-width":1083,"2048x2048-height":679,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2-742x465.png","card_image-width":742,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/LCChangeResults2.png","wide_image-width":1083,"wide_image-height":679}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

                                                                    Once the process completes, click the History<\/strong> tab in the Raster Analysis<\/strong> pane. You can review the messages about all the processing you have completed in this web map.<\/p>\n

                                                                      \n
                                                                    1. \n
                                                                        \n
                                                                      1. Click the three dots to the right of the processing entry and select View details<\/strong> to see any messages and result remarks about the process. You will immediately be prompted that you have unsaved changes in your raster function editor.<\/li>\n
                                                                      2. Click Save<\/strong> and enter a name for your raster function template like RFT_DroughtLC<\/strong>.<\/li>\n
                                                                      3. Click Save<\/strong>.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

                                                                         <\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2269912,"id":2269912,"title":"ItemDetailsPageExample","filename":"ItemDetailsPageExample.png","filesize":74025,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\/itemdetailspageexample","alt":"Item details page example","author":"108651","description":"","caption":"The Item details page will give you a recap of the processing, parameters, and any messages generated during processing.","name":"itemdetailspageexample","status":"inherit","uploaded_to":2265802,"date":"2024-03-01 18:04:17","modified":"2024-03-01 18:05:06","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":986,"height":637,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample.png","medium-width":404,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample.png","medium_large-width":768,"medium_large-height":496,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample.png","large-width":986,"large-height":637,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample.png","1536x1536-width":986,"1536x1536-height":637,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample.png","2048x2048-width":986,"2048x2048-height":637,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample-720x465.png","card_image-width":720,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/ItemDetailsPageExample.png","wide_image-width":986,"wide_image-height":637}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

                                                                          \n
                                                                        1. \n
                                                                            \n
                                                                          1. In the Details<\/strong> dialogue, select Messages and review the details about the processing and then close the Details<\/strong> dialogue.<\/li>\n
                                                                          2. In the Layers<\/strong> pane, turn off the visibility of the input imagery layers to review the output.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

                                                                            In this blog, you have learned how to create a raster function template with the Raster function editor. There are many more raster function templates already shared in ArcGIS Online for you to try and I hope that you are able to create your own for your analysis based on this process.<\/p>\n"}],"related_articles":[{"ID":2239742,"post_author":"108651","post_date":"2024-02-28 21:00:58","post_date_gmt":"2024-02-29 05:00:58","post_content":"","post_title":"What's New in ArcGIS Image for ArcGIS Online (February 2024)","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"whats-new-in-arcgis-image-for-arcgis-online-february-2024","to_ping":"","pinged":"","post_modified":"2024-05-06 14:31:26","post_modified_gmt":"2024-05-06 21:31:26","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=2239742","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":1825362,"post_author":"108651","post_date":"2023-02-02 09:00:55","post_date_gmt":"2023-02-02 17:00:55","post_content":"","post_title":"Why should you organization consider hosting imagery in ArcGIS Online?","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"why-should-you-consider-adding-arcgis-image-to-your-organization","to_ping":"","pinged":"","post_modified":"2024-08-27 15:20:57","post_modified_gmt":"2024-08-27 22:20:57","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=1825362","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":2010162,"post_author":"108651","post_date":"2023-07-03 10:27:34","post_date_gmt":"2023-07-03 17:27:34","post_content":"","post_title":"Assess wildfire damage in ArcGIS Online - Part 4 (Host imagery layers)","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"assessing-canadian-wildfire-damage-with-landsat-data-and-arcgis-online-hosting-imagery-layers","to_ping":"","pinged":"","post_modified":"2023-08-03 07:23:43","post_modified_gmt":"2023-08-03 14:23:43","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=2010162","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":1932982,"post_author":"108651","post_date":"2023-12-05 06:00:48","post_date_gmt":"2023-12-05 14:00:48","post_content":"","post_title":"New to raster analysis in ArcGIS Online? Here are five tips to get you started.","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"tips-to-use-raster-analysis-tools-wisely","to_ping":"","pinged":"","post_modified":"2024-08-20 09:02:35","post_modified_gmt":"2024-08-20 16:02:35","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=1932982","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":1735002,"post_author":"108651","post_date":"2022-11-02 09:00:41","post_date_gmt":"2022-11-02 16:00:41","post_content":"","post_title":"How can tiled imagery layers from ArcGIS Online make your imagery more useful?","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"tiled-imagery-layers-in-your-organization","to_ping":"","pinged":"","post_modified":"2024-08-19 06:58:43","post_modified_gmt":"2024-08-19 13:58:43","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=1735002","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":1969352,"post_author":"108651","post_date":"2023-10-31 06:00:48","post_date_gmt":"2023-10-31 13:00:48","post_content":"","post_title":"Imagery data sources to power your workflows","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"imagery-data-sources-to-power-your-workflows","to_ping":"","pinged":"","post_modified":"2024-08-20 09:08:25","post_modified_gmt":"2024-08-20 16:08:25","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=1969352","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"}],"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/03\/BlogWaterLoss_826_465.png","wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2024\/02\/RFBanner_1920_1080.png","authors":[{"ID":108651,"user_firstname":"Jeffrey","user_lastname":"Swain","nickname":"Jeff Swain","user_nicename":"jswain","display_name":"Jeff Swain","user_email":"JSwain@esri.com","user_url":"https:\/\/www.esri.com\/arcgis-blog\/?s=#&author=jswain","user_registered":"2020-10-05 20:10:08","user_description":"A Product Engineer on the Raster Team, who has been with Esri in various capacities since 2009, including as an Esri Support Analyst, and an Author for Esri Training Services. \r\n\r\nI find joy in solving problems through imagery and shared understanding, always driven by a passion to make things work better. I'm grateful for the creative minds I've met along the way\u2014collaboration has shown me that the best solutions are often born from many voices working together.","user_avatar":""},{"ID":299162,"user_firstname":"Ling","user_lastname":"Tang","nickname":"Ling Tang (Redlands)","user_nicename":"ling_tang","display_name":"Ling Tang","user_email":"Ling_Tang@esri.com","user_url":"","user_registered":"2022-01-10 21:15:59","user_description":"Dr. Ling Tang has been exploring Remote Sensing and GIS for more than 20 years. She is a Senior Product Engineer for imagery at Esri where she focuses on the development of best practices for visualizing and analyzing scientific big data, machine learning and image classification on ArcGIS platform. Before joining Esri, she was a former research professional at NASA GSFC worked on a couple of precipitation missions.","user_avatar":""}]},"yoast_head":"\nMeasuring Change with the Raster Function Editor in Map Viewer Measuring change over time with satellite data is one way to study the growth.<\/title>\n<meta name=\"description\" content=\"Learn how to use the raster function editor in the map viewer for change detection in ArcGIS Online. Analyze satellite imagery to measure change over time.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/imagery\/change-detection-in-map-viewer-part-2-measuring-change-with-raster-functions\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Change detection in Map Viewer Part 2: Measuring change with raster functions\" \/>\n<meta property=\"og:description\" content=\"Learn how to use the raster function editor in the map viewer for change detection in ArcGIS Online. 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