https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-historical-maps-spatial-images-for-analysis/m-p/1238424#M11816 <P>Can I use the unsupervised classification tool in Arc GIS Pro to analyze how urban expansion has occurred for a particular city? The cities I am interested in are small cities in Northern Africa I want to go as far back as possible so I think that means using Landsat data. Can I then use the unsupervised classification (or other?) tool on this data to compare how land use has changed from decade to decade? I want to figure out the horizontal expansion rate for a city. I tried to run this tool on a Landsat image from 2001 and a higher-resolution Sentinel image, but I received an error/failure both times.&nbsp;</P> Fri, 16 Dec 2022 01:39:47 GMT Hope-Hauptman 2022-12-16T01:39:47Z https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-historical-maps-spatial-images-for-analysis/m-p/1238424#M11816 <P>Can I use the unsupervised classification tool in Arc GIS Pro to analyze how urban expansion has occurred for a particular city? The cities I am interested in are small cities in Northern Africa I want to go as far back as possible so I think that means using Landsat data. Can I then use the unsupervised classification (or other?) tool on this data to compare how land use has changed from decade to decade? I want to figure out the horizontal expansion rate for a city. I tried to run this tool on a Landsat image from 2001 and a higher-resolution Sentinel image, but I received an error/failure both times.&nbsp;</P> Fri, 16 Dec 2022 01:39:47 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-historical-maps-spatial-images-for-analysis/m-p/1238424#M11816 Hope-Hauptman 2022-12-16T01:39:47Z