topic Spatial Analyst Distress Call - Reclassify producing strange results in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-distress-call-reclassify-producing/m-p/191241#M2725 <HTML><HEAD></HEAD><BODY><SPAN>This problem has recently starting occurring everytime I run a reclassification in Spatial Analyst.&nbsp; I think some setting has been changed but so far I'm unable to determine what it could have been.</SPAN><BR /><BR /><SPAN>I am working with integer grids where certain values must be reclassified to be either a '1' or '0' respectively.&nbsp; The results are always a new integer grid where values are either '1' or '0' in the entire grid.&nbsp; Recently one of my reclassify operations ended with a raster that appeared looking like this:</SPAN><BR /><BR /><A href="http://lh6.ggpht.com/_BHXvjSg__I4/S9cmL6mXwmI/AAAAAAAAC2c/SdOOLTE-9Xo/s1152/SA_problem.JPG" rel="nofollow" target="_blank"><IMG src="http://lh6.ggpht.com/_BHXvjSg__I4/S9cmL6mXwmI/AAAAAAAAC2c/SdOOLTE-9Xo/s1152/SA_problem.JPG" /></A><BR /><BR /><SPAN>Notice in the table of contents it is classified into 9 classes, but the raster itself appears to be correct having only two values.</SPAN><BR /><BR /><SPAN>At first I thought it was simply a symbology issue.&nbsp; I thought Arcmap had somehow defaulted to showing the raster in 9 classes even though there are only two unique values (again, '1' or '0').&nbsp; But in the properties of this raster I cannot change it to only 2 classes.&nbsp; First I get an error saying there is no attribute table, so I tell ArcMap YES to build one.&nbsp; Once the table is built, I can see in the symbology tab that indeed 9 classes are assigned on the color ramp, but it will not allow me to switch to 2 instead.&nbsp; It gives me an error saying "Can't read descriptor table".</SPAN><BR /><BR /><SPAN>To reiterate, this problem started occurring quite suddenly using data I have been working with for awhile.&nbsp; My coworker ran an identical reclassify process on the same data and his results were normal, so I believe something has gone sour with my settings.</SPAN><BR /><BR /><SPAN>Has anyone had this problem before, or knows of a quick fix?</SPAN><BR /><BR /><SPAN>Many thanks for your help.</SPAN></BODY></HTML> Tue, 27 Apr 2010 17:06:45 GMT CurtWalker 2010-04-27T17:06:45Z Spatial Analyst Distress Call - Reclassify producing strange results https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-distress-call-reclassify-producing/m-p/191241#M2725 <HTML><HEAD></HEAD><BODY><SPAN>This problem has recently starting occurring everytime I run a reclassification in Spatial Analyst.&nbsp; I think some setting has been changed but so far I'm unable to determine what it could have been.</SPAN><BR /><BR /><SPAN>I am working with integer grids where certain values must be reclassified to be either a '1' or '0' respectively.&nbsp; The results are always a new integer grid where values are either '1' or '0' in the entire grid.&nbsp; Recently one of my reclassify operations ended with a raster that appeared looking like this:</SPAN><BR /><BR /><A href="http://lh6.ggpht.com/_BHXvjSg__I4/S9cmL6mXwmI/AAAAAAAAC2c/SdOOLTE-9Xo/s1152/SA_problem.JPG" rel="nofollow" target="_blank"><IMG src="http://lh6.ggpht.com/_BHXvjSg__I4/S9cmL6mXwmI/AAAAAAAAC2c/SdOOLTE-9Xo/s1152/SA_problem.JPG" /></A><BR /><BR /><SPAN>Notice in the table of contents it is classified into 9 classes, but the raster itself appears to be correct having only two values.</SPAN><BR /><BR /><SPAN>At first I thought it was simply a symbology issue.&nbsp; I thought Arcmap had somehow defaulted to showing the raster in 9 classes even though there are only two unique values (again, '1' or '0').&nbsp; But in the properties of this raster I cannot change it to only 2 classes.&nbsp; First I get an error saying there is no attribute table, so I tell ArcMap YES to build one.&nbsp; Once the table is built, I can see in the symbology tab that indeed 9 classes are assigned on the color ramp, but it will not allow me to switch to 2 instead.&nbsp; It gives me an error saying "Can't read descriptor table".</SPAN><BR /><BR /><SPAN>To reiterate, this problem started occurring quite suddenly using data I have been working with for awhile.&nbsp; My coworker ran an identical reclassify process on the same data and his results were normal, so I believe something has gone sour with my settings.</SPAN><BR /><BR /><SPAN>Has anyone had this problem before, or knows of a quick fix?</SPAN><BR /><BR /><SPAN>Many thanks for your help.</SPAN></BODY></HTML> Tue, 27 Apr 2010 17:06:45 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-distress-call-reclassify-producing/m-p/191241#M2725 CurtWalker 2010-04-27T17:06:45Z RESPONSE: Spatial Analyst Distress Call - Reclassify producing strange results https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-distress-call-reclassify-producing/m-p/191242#M2726 <HTML><HEAD></HEAD><BODY><SPAN>Have you tried just using 'Unique Values' instead of using classes? This might be a simple solution... maybe too simple for what your issue really is. Not sure what else it could be.</SPAN></BODY></HTML> Tue, 27 Apr 2010 17:35:19 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-distress-call-reclassify-producing/m-p/191242#M2726 PaulKnaga 2010-04-27T17:35:19Z