{"id":79821,"date":"2017-10-03T14:46:14","date_gmt":"2017-10-03T14:46:14","guid":{"rendered":"http:\/\/www.esri.com\/arcgis-blog\/products\/product\/uncategorized\/missing-data-no-problem\/"},"modified":"2018-03-26T21:14:58","modified_gmt":"2018-03-26T21:14:58","slug":"missing-data-no-problem","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/analytics\/analytics\/missing-data-no-problem","title":{"rendered":"Missing Data? \u2013 No problem"},"author":7021,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[23341],"tags":[23391,25581],"industry":[],"product":[36561],"class_list":["post-79821","blog","type-blog","status-publish","format-standard","hentry","category-analytics","tag-spatial-analytics","tag-spatial-statistics","product-arcgis-pro"],"acf":{"short_description":"Do you have a data set that isn\u2019t quite complete? Maybe a sensor went down, a county has suppressed health data or your sales data is m...","flexible_content":[{"acf_fc_layout":"content","content":"<p>Do you have a data set that isn\u2019t quite complete? Maybe a sensor went down, a county has suppressed health data or your sales data is missing a store\u2019s reporting. Depending on the analysis these null values can throw a wrench in your workflow. To help fill in missing values the <a title=\"Fill Missing Values\" href=\"http:\/\/pro.arcgis.com\/en\/pro-app\/tool-reference\/space-time-pattern-mining\/fillmissingvalues.htm\" target=\"_blank\">Fill Missing Values<\/a> tool was added into the Space Time Pattern Mining toolbox as of ArcGIS Pro 2.0.<\/p>\n<p><strong>Filling Based on Spatial Neighbors<\/strong><\/p>\n<p>Fill missing values lets you select a \u2018fill method\u2019 which includes average, minimum, maximum, median and temporal trend. You also define neighborhoods used to find the values for the fill method calculation. You can use fixed distance, k nearest neighbors, contiguity edges, contiguity edges corners or a spatial weights file. An example below shows the tool using 6 nearest neighbors and the average fill method. The grey polygon on the left has a null value and the light blue highlighted polygons represent its 6 nearest neighbors. After running fill missing values, we can see that the polygon is given the value of 6065.17, the average of its 6 neighbors.<\/p>\n<figure id=\"attachment_87834\" aria-describedby=\"caption-attachment-87834\" style=\"width: 640px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/10\/FMV_KNN.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-87834\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/10\/FMV_KNN-1024x387.png\" alt=\"\" width=\"640\" height=\"241\" \/><\/a><figcaption id=\"caption-attachment-87834\" class=\"wp-caption-text\">Fill Missing Values with the average of the 6 nearest neighbors<\/figcaption><\/figure>\n<p><strong>Filling Based on Temporal Trend<\/strong><\/p>\n<p>Fill Missing Values also lets you use a temporal trend if you have time series data (if you have station data each location will need to have a unique ID). In the example below [ID: 7] is missing a reading for precipitation from a weather station. Fill missing values will interpolate the trend of the data at that location and return the value at the missing time.<\/p>\n<figure id=\"attachment_87835\" aria-describedby=\"caption-attachment-87835\" style=\"width: 640px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/10\/FMV_TimeSeries_v3.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/10\/FMV_TimeSeries_v3-1024x708.png\" alt=\"\" width=\"640\" height=\"442\" class=\"size-large wp-image-87835\" \/><\/a><figcaption id=\"caption-attachment-87835\" class=\"wp-caption-text\">Fill Missing Values using Temporal Trend<\/figcaption><\/figure>\n<p>The Fill Missing Values tool can help minimize the impact null values have in your analysis. See <a title=\"How Fill Missing Values Works\" href=\"http:\/\/pro.arcgis.com\/en\/pro-app\/tool-reference\/space-time-pattern-mining\/learnmorefillmissingvalues.htm\" target=\"_blank\">How Fill Missing Values Works <\/a>for tips and best practices.<\/p>\n"}],"authors":[{"ID":7021,"user_firstname":"Ryan","user_lastname":"Ruthart","nickname":"ruthartr","user_nicename":"ruthartr","display_name":"ruthartr","user_email":"RRuthart@esri.com","user_url":"","user_registered":"2018-03-02 00:19:07","user_description":"","user_avatar":"<img alt='' src='https:\/\/secure.gravatar.com\/avatar\/d451bade9484211ac653a4e7b6033c630a0067f32fa7af107d0b68ca1394072b?s=96&#038;d=blank&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/d451bade9484211ac653a4e7b6033c630a0067f32fa7af107d0b68ca1394072b?s=192&#038;d=blank&#038;r=g 2x' class='avatar avatar-96 photo' height='96' width='96' loading='lazy' decoding='async'\/>"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Missing Data? 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