topic Re: Lokking for a Raster Calculator expression in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352398#M4975 <HTML><HEAD></HEAD><BODY><SPAN>So I did it like this:</SPAN><BR /><BR /><PRE __default_attr="plain" __jive_macro_name="code" class="jive_macro_code jive_text_macro">Con("target" == 0, FocalStatistics("target", NbrCircle(5, "CELL"), "MAJORITY"), "target")</PRE><BR /><BR /><SPAN>It removed all pixels having a value of "0" in just 1 step.</SPAN><BR /><SPAN>Quite comfortable.</SPAN><BR /><BR /><SPAN>Thanks for all your fast answers.</SPAN><BR /><BR /><SPAN>Best regards</SPAN><BR /><SPAN>Jochen</SPAN></BODY></HTML> Mon, 26 Aug 2013 14:35:07 GMT JochenScholtes 2013-08-26T14:35:07Z Lokking for a Raster Calculator expression https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352393#M4970 <HTML><HEAD></HEAD><BODY><SPAN>Dear all,</SPAN><BR /><BR /><SPAN>I have a raster layer and want to reclassify one class based on a rule. Unfortunately I can't find commands for the raster calculator and don't know how to implement it.</SPAN><BR /><BR /><SPAN>Basically I want the Raster Calculator to do the following:</SPAN><BR /><BR /><SPAN>If "my-layer" == 0, reclassify it using a majority filter (8 neighbouring cells)...</SPAN><BR /><BR /><SPAN>Has anyone a clue, how one could implement that?</SPAN><BR /><BR /><SPAN>Best regards.</SPAN><BR /><BR /><SPAN>Muenchner</SPAN></BODY></HTML> Fri, 09 Aug 2013 13:34:20 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352393#M4970 JochenScholtes 2013-08-09T13:34:20Z Re: Lokking for a Raster Calculator expression https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352394#M4971 <HTML><HEAD></HEAD><BODY><SPAN>I've used the Shift command for this type of thing. In model builder you can automate and trial and error your process.</SPAN><BR /><SPAN>Tool location: Toolboxes\System Toolboxes\Data Management Tools.tbx\Projections and Transformations\Raster\Shift</SPAN><BR /><BR /><SPAN>Related post for using Shift: </SPAN><A href="http://forums.arcgis.com/threads/75804-surface-angle-in-each-cardinal-direction?p=265962&amp;viewfull=1#post265962">http://forums.arcgis.com/threads/75804-surface-angle-in-each-cardinal-direction?p=265962&amp;viewfull=1#post265962</A></BODY></HTML> Fri, 09 Aug 2013 15:04:56 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352394#M4971 MarkBoucher 2013-08-09T15:04:56Z Re: Lokking for a Raster Calculator expression https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352395#M4972 <HTML><HEAD></HEAD><BODY><SPAN>Use Con and FocalStatistics. Something like:</SPAN><BR /><SPAN>Con("raster"==0, FocalStatistics("raster", NbrRectangle(3, 3, "CELL"), "MAJORITY"), "raster")</SPAN></BODY></HTML> Fri, 09 Aug 2013 22:13:40 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352395#M4972 Luke_Pinner 2013-08-09T22:13:40Z Re: Lokking for a Raster Calculator expression https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352396#M4973 <HTML><HEAD></HEAD><BODY><SPAN>Can't edit my previous post for some reason...? Anyways: the following raster calculator expression is better as it will ensure that 0 values don't get included when the FocalStatistics expression is executed:</SPAN><BR /><PRE __default_attr="plain" __jive_macro_name="code" class="jive_macro_code jive_text_macro">Con("raster" == 0, FocalStatistics(SetNull("raster" == 0, "raster"), NbrRectangle(3, 3, "CELL"), "MAJORITY"), "raster")</PRE></BODY></HTML> Mon, 12 Aug 2013 02:19:41 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352396#M4973 Luke_Pinner 2013-08-12T02:19:41Z Re: Lokking for a Raster Calculator expression https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352397#M4974 <HTML><HEAD></HEAD><BODY><SPAN>Hi all,</SPAN><BR /><BR /><SPAN>sorry for my late response, I was just out of office.</SPAN><BR /><BR /><SPAN>I'll immediately try your versions and report on the outcome.</SPAN><BR /><BR /><SPAN>Best regards</SPAN><BR /><SPAN>Jochen</SPAN></BODY></HTML> Mon, 26 Aug 2013 14:22:14 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352397#M4974 JochenScholtes 2013-08-26T14:22:14Z Re: Lokking for a Raster Calculator expression https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352398#M4975 <HTML><HEAD></HEAD><BODY><SPAN>So I did it like this:</SPAN><BR /><BR /><PRE __default_attr="plain" __jive_macro_name="code" class="jive_macro_code jive_text_macro">Con("target" == 0, FocalStatistics("target", NbrCircle(5, "CELL"), "MAJORITY"), "target")</PRE><BR /><BR /><SPAN>It removed all pixels having a value of "0" in just 1 step.</SPAN><BR /><SPAN>Quite comfortable.</SPAN><BR /><BR /><SPAN>Thanks for all your fast answers.</SPAN><BR /><BR /><SPAN>Best regards</SPAN><BR /><SPAN>Jochen</SPAN></BODY></HTML> Mon, 26 Aug 2013 14:35:07 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/lokking-for-a-raster-calculator-expression/m-p/352398#M4975 JochenScholtes 2013-08-26T14:35:07Z