topic Re: Raster cell size in New to GIS Questions https://community.esri.com/t5/new-to-gis-questions/raster-cell-size/m-p/103422#M285 <HTML><HEAD></HEAD><BODY><P>I'd go with the 31.871 value over a general value of 30.</P><P></P><P>Also, to be on the safe side, it would be best to check the linear unit information for the image to confirm that it is meters.</P><P></P><P>In ArcMap, Right-click on the image in the Table of Contents, Properties, Source Tab, scroll down to the Spatial Reference subheading, then look at "Linear Unit" and see what the units are.</P><P></P><P></P><P>Chris Donohue, GISP</P></BODY></HTML> Tue, 17 Mar 2015 20:09:45 GMT ChrisDonohue__GISP 2015-03-17T20:09:45Z Raster cell size https://community.esri.com/t5/new-to-gis-questions/raster-cell-size/m-p/103421#M284 <HTML><HEAD></HEAD><BODY><P>I have land use data from U.S.D.A. geospatial data gateway. I believe I read somewhere that the raster cell size is 30 m x 30 m. When I look in the Properties &gt; Source &gt; Raster Information, it says "Cell Size (X, Y)&nbsp; 31.871 , 31.871", I'm assuming that's in meters. I am trying to figure out approximate areas for several subsets of my map and want as close an estimate as possible. Can I consider it safe to do the math based on the 31.871 value and not 30?</P></BODY></HTML> Tue, 17 Mar 2015 20:01:07 GMT https://community.esri.com/t5/new-to-gis-questions/raster-cell-size/m-p/103421#M284 johnpolo 2015-03-17T20:01:07Z Re: Raster cell size https://community.esri.com/t5/new-to-gis-questions/raster-cell-size/m-p/103422#M285 <HTML><HEAD></HEAD><BODY><P>I'd go with the 31.871 value over a general value of 30.</P><P></P><P>Also, to be on the safe side, it would be best to check the linear unit information for the image to confirm that it is meters.</P><P></P><P>In ArcMap, Right-click on the image in the Table of Contents, Properties, Source Tab, scroll down to the Spatial Reference subheading, then look at "Linear Unit" and see what the units are.</P><P></P><P></P><P>Chris Donohue, GISP</P></BODY></HTML> Tue, 17 Mar 2015 20:09:45 GMT https://community.esri.com/t5/new-to-gis-questions/raster-cell-size/m-p/103422#M285 ChrisDonohue__GISP 2015-03-17T20:09:45Z Re: Raster cell size https://community.esri.com/t5/new-to-gis-questions/raster-cell-size/m-p/103423#M286 <HTML><HEAD></HEAD><BODY><P>Thanks, Chris. That all helped.</P></BODY></HTML> Wed, 18 Mar 2015 13:30:29 GMT https://community.esri.com/t5/new-to-gis-questions/raster-cell-size/m-p/103423#M286 johnpolo 2015-03-18T13:30:29Z