{"id":2793032,"date":"2025-05-20T10:00:40","date_gmt":"2025-05-20T17:00:40","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2793032"},"modified":"2025-05-15T06:38:32","modified_gmt":"2025-05-15T13:38:32","slug":"vectorize-large-rasters-efficiently-in-arcgis-pro-3-5","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/analytics\/vectorize-large-rasters-efficiently-in-arcgis-pro-3-5","title":{"rendered":"Vectorize large rasters efficiently in ArcGIS Pro 3.5"},"author":5201,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[23341,37101,23851,22931],"tags":[736181,24321,23011,23571],"industry":[],"product":[36561],"class_list":["post-2793032","blog","type-blog","status-publish","format-standard","hentry","category-analytics","category-announcements","category-data-management","category-imagery","tag-conversion","tag-geoprocessing","tag-raster","tag-whats-new","product-arcgis-pro"],"acf":{"authors":[{"ID":5201,"user_firstname":"Steve","user_lastname":"Lynch","nickname":"Steve Lynch","user_nicename":"stevelynch","display_name":"Steve Lynch","user_email":"slynch@esri.com","user_url":"","user_registered":"2018-03-02 00:16:52","user_description":"Steve Lynch is a Senior Product Engineer on the Spatial Analyst Team and has been with Esri since 2003. Previously he was a Senior Research Fellow at the University of KwaZulu-Natal in Pietermaritzburg, South Africa. His primary focus was research into long term rainfall variability and the mapping thereof.","user_avatar":"<img data-del=\"avatar\" src='https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/05\/sdl_2024_600x600_300dpi-213x200.jpg' class='avatar pp-user-avatar avatar-96 photo ' height='96' width='96'\/>"}],"short_description":"The Raster To Polygon geoprocessing tool has enhanced performance when vectorizing large rasters in ArcGIS Pro 3.5.","flexible_content":[{"acf_fc_layout":"content","content":"<p><span data-contrast=\"auto\">There are many options available on the <\/span><a href=\"https:\/\/pro.arcgis.com\/en\/pro-app\/latest\/tool-reference\/conversion\/raster-to-polygon.htm\"><b><span data-contrast=\"none\">Raster To Polygon<\/span><\/b><\/a><span data-contrast=\"auto\"> geoprocessing tool to choose from when converting a raster to polygon features. ArcGIS Pro version 3.5 improved overall performance of this tool by at least 60 percent, and in some cases, it is 95 percent faster. However, often the raster is too large or has too many unique values to vectorize. This blog article will outline some of the techniques that can be used to vectorize the raster efficiently.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2793172,"id":2793172,"title":"RasterToPolygonUI","filename":"RasterToPolygonUI-1.jpg","filesize":19989,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/analytics\/vectorize-large-rasters-efficiently-in-arcgis-pro-3-5\/rastertopolygonui-2","alt":"Raster to Polygon tool UI in ArcGIS Pro","author":"5201","description":"","caption":"","name":"rastertopolygonui-2","status":"inherit","uploaded_to":2793032,"date":"2025-05-14 14:23:44","modified":"2025-05-14 16:03:09","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":350,"height":377,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1.jpg","medium-width":242,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1.jpg","medium_large-width":350,"medium_large-height":377,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1.jpg","large-width":350,"large-height":377,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1.jpg","1536x1536-width":350,"1536x1536-height":377,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1.jpg","2048x2048-width":350,"2048x2048-height":377,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1.jpg","card_image-width":350,"card_image-height":377,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/12\/RasterToPolygonUI-1.jpg","wide_image-width":350,"wide_image-height":377}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><span data-contrast=\"auto\">Figure: Raster to Polygon tool UI in ArcGIS Pro<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">First, decide which parameters to use before doing the conversion. If the raster has many unique values, for example, a digital elevation model (DEM), then leave the <\/span><b><span data-contrast=\"auto\">Create multipart features<\/span><\/b><span data-contrast=\"auto\"> option unchecked. When it is checked, all the geometry is kept in memory until all the data is processed before writing it to disk, and this can cause the tool to fail when insufficient memory becomes available.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Convert large rasters<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">If the raster is very large or has many unique cells (greater than 2.1 billion), or a raster with one value and the cells have many NoData values around them, then conversion might be a problem because the output geometry could be too complex and have too many vertices.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">In some cases, a warning message might appear: <\/span><b><span data-contrast=\"auto\">Writing a polygon with over 50 million vertices, consider subdividing the polygon<\/span><\/b><span data-contrast=\"auto\">.<\/span><span data-contrast=\"auto\"> This is not an error; it is simply an informative message stating that one or more polygons have more than 50 million vertices. It is recommended that you subdivide extremely large features that could cause issues with drawing, analysis, editing, or performance. It is suggested that you rerun the tool and set the <\/span><b><span data-contrast=\"auto\">Maximum vertices per polygon feature<\/span><\/b><span data-contrast=\"auto\"> parameter to a value less than 50 million.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">You can resample the raster to a larger cell size using the <\/span><a href=\"https:\/\/pro.arcgis.com\/en\/pro-app\/latest\/tool-reference\/data-management\/resample.htm\"><b><span data-contrast=\"none\">Resample<\/span><\/b><\/a><span data-contrast=\"auto\"> geoprocessing tool or generalize the raster to get rid of unnecessary details. You can also use the <\/span><b><span data-contrast=\"auto\">Simplify polygons<\/span><\/b><span data-contrast=\"auto\"> option to reduce the amount of geometry. If all these options are unsuccessful, you can split the raster into smaller pieces using the <\/span><a href=\"https:\/\/pro.arcgis.com\/en\/pro-app\/latest\/tool-reference\/data-management\/split-raster.htm\"><b><span data-contrast=\"none\">Split Raster<\/span><\/b><\/a> <span data-contrast=\"auto\">geoprocessing tool and then convert the smaller rasters to polygons. The merged output can be dissolved if it is not too complex and large. Using the <\/span><b><span data-contrast=\"auto\">Split Raster<\/span><\/b><span data-contrast=\"auto\"> route is not recommended when using the <\/span><b><span data-contrast=\"auto\">Simplify polygons<\/span><\/b><span data-contrast=\"auto\"> option because the polygons on the join lines might not line up as simplification was not performed on the complete polygon surrounding the join line.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Conclusion<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The performance improvements also changed the order in which the vertices to be removed are treated when the <\/span><b><span data-contrast=\"auto\">Simplify polygons<\/span><\/b><span data-contrast=\"auto\"> option is used. This means that the output may be slightly different from those created in previous versions, and this is expected.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n"}],"related_articles":"","show_article_image":false,"card_image":false,"wide_image":false},"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>Vectorize large rasters efficiently in ArcGIS Pro 3.5<\/title>\n<meta name=\"description\" content=\"ArcGIS Pro version 3.5 improved overall performance of this tool by at least 60 percent, and in some cases, it is 95 percent faster.\" \/>\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-pro\/analytics\/vectorize-large-rasters-efficiently-in-arcgis-pro-3-5\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vectorize large rasters efficiently in ArcGIS Pro 3.5\" \/>\n<meta property=\"og:description\" content=\"ArcGIS Pro version 3.5 improved overall performance of this tool by at least 60 percent, and in some cases, it is 95 percent faster.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/analytics\/vectorize-large-rasters-efficiently-in-arcgis-pro-3-5\" \/>\n<meta property=\"og:site_name\" content=\"ArcGIS Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/esrigis\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@ESRI\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":[\"Article\",\"BlogPosting\"],\"@id\":\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/analytics\/vectorize-large-rasters-efficiently-in-arcgis-pro-3-5#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/analytics\/vectorize-large-rasters-efficiently-in-arcgis-pro-3-5\"},\"author\":{\"name\":\"Steve Lynch\",\"@id\":\"https:\/\/www.esri.com\/arcgis-blog\/#\/schema\/person\/5264c0d64edeb4faa336cae40319b604\"},\"headline\":\"Vectorize large rasters efficiently in ArcGIS Pro 3.5\",\"datePublished\":\"2025-05-20T17:00:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/analytics\/vectorize-large-rasters-efficiently-in-arcgis-pro-3-5\"},\"wordCount\":7,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.esri.com\/arcgis-blog\/#organization\"},\"keywords\":[\"Conversion\",\"geoprocessing\",\"raster\",\"what's new\"],\"articleSection\":[\"Analytics\",\"Announcements\",\"Data Management\",\"Imagery &amp; 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