topic Re: RASTER MINUS FUNCTION NOT WORKING AS EXPECTED in Canadian GIS Professionals Questions https://community.esri.com/t5/canadian-gis-professionals-questions/raster-minus-function-not-working-as-expected/m-p/851461#M53 <HTML><HEAD></HEAD><BODY><P>convert the ascii files first to *.tif format and try again, otherwise just try subtracting a constant value from them to see if you get an appropriate output</P><P><A class="link-titled" href="https://pro.arcgis.com/en/pro-app/tool-reference/conversion/ascii-to-raster.htm" title="https://pro.arcgis.com/en/pro-app/tool-reference/conversion/ascii-to-raster.htm">ASCII to Raster—Conversion toolbox | ArcGIS Desktop</A>&nbsp;</P><P><A class="link-titled" href="https://pro.arcgis.com/en/pro-app/tool-reference/3d-analyst/minus.htm" title="https://pro.arcgis.com/en/pro-app/tool-reference/3d-analyst/minus.htm">Minus—Help | ArcGIS Desktop</A>&nbsp;</P></BODY></HTML> Wed, 08 Jan 2020 22:14:49 GMT DanPatterson_Retired 2020-01-08T22:14:49Z RASTER MINUS FUNCTION NOT WORKING AS EXPECTED https://community.esri.com/t5/canadian-gis-professionals-questions/raster-minus-function-not-working-as-expected/m-p/851460#M52 <HTML><HEAD></HEAD><BODY><P>ArcMap 9.3 Spatial Analyst Math function Minus.&nbsp; I have two ASCII rasters with identical extent and cell size representing mean annual temperatures.&nbsp; I want to difference the two rasters to produce an output raster with the same extent and cell size.&nbsp; However when I use the tool I get a raster with only 1 row and one column.&nbsp; I also get an attribute table with three rows and fields of VALUE and COUNT.&nbsp; What am I doing wrong? &nbsp;</P></BODY></HTML> Wed, 08 Jan 2020 22:00:37 GMT https://community.esri.com/t5/canadian-gis-professionals-questions/raster-minus-function-not-working-as-expected/m-p/851460#M52 StevenHill1 2020-01-08T22:00:37Z Re: RASTER MINUS FUNCTION NOT WORKING AS EXPECTED https://community.esri.com/t5/canadian-gis-professionals-questions/raster-minus-function-not-working-as-expected/m-p/851461#M53 <HTML><HEAD></HEAD><BODY><P>convert the ascii files first to *.tif format and try again, otherwise just try subtracting a constant value from them to see if you get an appropriate output</P><P><A class="link-titled" href="https://pro.arcgis.com/en/pro-app/tool-reference/conversion/ascii-to-raster.htm" title="https://pro.arcgis.com/en/pro-app/tool-reference/conversion/ascii-to-raster.htm">ASCII to Raster—Conversion toolbox | ArcGIS Desktop</A>&nbsp;</P><P><A class="link-titled" href="https://pro.arcgis.com/en/pro-app/tool-reference/3d-analyst/minus.htm" title="https://pro.arcgis.com/en/pro-app/tool-reference/3d-analyst/minus.htm">Minus—Help | ArcGIS Desktop</A>&nbsp;</P></BODY></HTML> Wed, 08 Jan 2020 22:14:49 GMT https://community.esri.com/t5/canadian-gis-professionals-questions/raster-minus-function-not-working-as-expected/m-p/851461#M53 DanPatterson_Retired 2020-01-08T22:14:49Z