topic Reclassify NoData to 0 - different behaviour in v10 in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/reclassify-nodata-to-0-different-behaviour-in-v10/m-p/174671#M2450 <HTML><HEAD></HEAD><BODY><SPAN>Good day,</SPAN><BR /><BR /><SPAN>A technique that I've used extensively in v9.3 is the Reclassify tool with a single Remap term ";NODATA 0". This keeps all existing values and replaces any NoData cells with 0 (within the Raster Analysis Mask if one is set). It even works on floating point rasters despite the help file indicating the Reclassify output is alway an integer raster!</SPAN><BR /><BR /><SPAN>In v10, however, it does nothing. In order to get it to work, I have to add additional Remap terms for the existing values. So in a simple case where the input raster contains only 1 and NODATA, the Remap terms are "1 1; NODATA 0", which works as expected. But this approach becomes unmanageble when the input raster contains a large number of values and impossible when the input raster is floating point.</SPAN><BR /><BR /><SPAN>So, is the "bug" in the v9.3 behaviour or the v10 behaviour? Regardless, is there another way to approach the requirement of keeping all existing raster values while replacing NoData with 0?</SPAN><BR /><BR /><SPAN>Thanks in advance,</SPAN><BR /><SPAN>Randal</SPAN></BODY></HTML> Sat, 06 Aug 2011 17:30:08 GMT RandalGreene1 2011-08-06T17:30:08Z Reclassify NoData to 0 - different behaviour in v10 https://community.esri.com/t5/arcgis-spatial-analyst-questions/reclassify-nodata-to-0-different-behaviour-in-v10/m-p/174671#M2450 <HTML><HEAD></HEAD><BODY><SPAN>Good day,</SPAN><BR /><BR /><SPAN>A technique that I've used extensively in v9.3 is the Reclassify tool with a single Remap term ";NODATA 0". This keeps all existing values and replaces any NoData cells with 0 (within the Raster Analysis Mask if one is set). It even works on floating point rasters despite the help file indicating the Reclassify output is alway an integer raster!</SPAN><BR /><BR /><SPAN>In v10, however, it does nothing. In order to get it to work, I have to add additional Remap terms for the existing values. So in a simple case where the input raster contains only 1 and NODATA, the Remap terms are "1 1; NODATA 0", which works as expected. But this approach becomes unmanageble when the input raster contains a large number of values and impossible when the input raster is floating point.</SPAN><BR /><BR /><SPAN>So, is the "bug" in the v9.3 behaviour or the v10 behaviour? Regardless, is there another way to approach the requirement of keeping all existing raster values while replacing NoData with 0?</SPAN><BR /><BR /><SPAN>Thanks in advance,</SPAN><BR /><SPAN>Randal</SPAN></BODY></HTML> Sat, 06 Aug 2011 17:30:08 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/reclassify-nodata-to-0-different-behaviour-in-v10/m-p/174671#M2450 RandalGreene1 2011-08-06T17:30:08Z Re: Reclassify NoData to 0 - different behaviour in v10 https://community.esri.com/t5/arcgis-spatial-analyst-questions/reclassify-nodata-to-0-different-behaviour-in-v10/m-p/174672#M2451 <HTML><HEAD></HEAD><BODY><SPAN>It turns out there is a relatively simple 2-step approach to this as described in the help file - </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000ms000000.htm">http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000ms000000.htm</A><SPAN>.</SPAN><BR /><BR /><SPAN>Randal</SPAN></BODY></HTML> Sat, 06 Aug 2011 17:58:22 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/reclassify-nodata-to-0-different-behaviour-in-v10/m-p/174672#M2451 RandalGreene1 2011-08-06T17:58:22Z