topic Using Less Than &amp;amp; Greater Than in Raster Calculator in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-less-than-amp-amp-greater-than-in-raster/m-p/435793#M6125 <HTML><HEAD></HEAD><BODY><SPAN>Hello all,</SPAN><BR /><BR /><SPAN>I simply want to find the cells in a raster with aspect values between 225 - 315. I am using raster calculator with the following expression, for which I get an error that says "The truth value of a raster is ambiguous"</SPAN><BR /><BR /><SPAN>"Aspect_raste1" &gt;= 225 &amp; "Aspect_raste1" &lt;= 315</SPAN><BR /><BR /><SPAN>What am I doing wrong?</SPAN><BR /><BR /><SPAN>thanks</SPAN></BODY></HTML> Tue, 01 Nov 2011 21:39:30 GMT FlemingTalton 2011-11-01T21:39:30Z Using Less Than &amp; Greater Than in Raster Calculator https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-less-than-amp-amp-greater-than-in-raster/m-p/435793#M6125 <HTML><HEAD></HEAD><BODY><SPAN>Hello all,</SPAN><BR /><BR /><SPAN>I simply want to find the cells in a raster with aspect values between 225 - 315. I am using raster calculator with the following expression, for which I get an error that says "The truth value of a raster is ambiguous"</SPAN><BR /><BR /><SPAN>"Aspect_raste1" &gt;= 225 &amp; "Aspect_raste1" &lt;= 315</SPAN><BR /><BR /><SPAN>What am I doing wrong?</SPAN><BR /><BR /><SPAN>thanks</SPAN></BODY></HTML> Tue, 01 Nov 2011 21:39:30 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-less-than-amp-amp-greater-than-in-raster/m-p/435793#M6125 FlemingTalton 2011-11-01T21:39:30Z Re: Using Less Than & Greater Than in Raster Calculator https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-less-than-amp-amp-greater-than-in-raster/m-p/435794#M6126 <HTML><HEAD></HEAD><BODY><SPAN>Hi</SPAN><BR /><BR /><SPAN>I read a similar post the other day - apparently what you have to do is write the expression this way:</SPAN><BR /><BR /><SPAN>("Aspect_raste1" &gt;= 225) &amp; ("Aspect_raste1" &lt;= 315)</SPAN><BR /><BR /><SPAN>Hope this helps.</SPAN></BODY></HTML> Tue, 08 Nov 2011 20:19:34 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-less-than-amp-amp-greater-than-in-raster/m-p/435794#M6126 CatherineMacGregor 2011-11-08T20:19:34Z