topic Re: slope map in ArcGIS Mapping and Charting Questions https://community.esri.com/t5/arcgis-mapping-and-charting-questions/slope-map/m-p/233040#M778 <HTML><HEAD></HEAD><BODY><P>Ok, I'll clarify. I am a novice at GIS; haven't used it in 15 years.</P><P>I'm on ArcGIS Desktop. I loaded the "Terrain: Slope Map" and the "Terrain: Slope in Degrees" map from ArcGIS's online portal into my project. I have zoomed into the area in interest (USA southwest deserts), opened the Raster Functions/ Calculator. Now I have no idea what to enter in the boxes for "Raster Variables" box = box and the Expression box. I'm assuming the Expression box is something like Value&lt;3, but is "Value" a legitimate Raster Variable? Do I need to crop the raster area before I proceed? Do I leave Cellsize Type as the default of "Max of" and Extent Type as the default "Intersection of"? The help docs state that the Terrain: Slope Map is an on-the-fly server-side calculation for visualization purposes. It says the Terrain: Slope in Degrees map is for analysis. On which do I run the calculator, and what are the variables?</P><P>When I looked in the help docs, their calculator page screenshots look nothing like the Raster Function pane I have on my screen.&nbsp;I'm an architect, not a GIS developer. Thanks for the help.</P><P>Matt</P></BODY></HTML> Wed, 04 Apr 2018 19:30:46 GMT MattFlynn2 2018-04-04T19:30:46Z slope map https://community.esri.com/t5/arcgis-mapping-and-charting-questions/slope-map/m-p/233038#M776 <HTML><HEAD></HEAD><BODY><P>how do I customize the coloring of the terrain: slope degrees map?</P><P>i want to see all the land sloping 0-3% and nothing else.</P></BODY></HTML> Mon, 02 Apr 2018 18:22:28 GMT https://community.esri.com/t5/arcgis-mapping-and-charting-questions/slope-map/m-p/233038#M776 MattFlynn2 2018-04-02T18:22:28Z Re: slope map https://community.esri.com/t5/arcgis-mapping-and-charting-questions/slope-map/m-p/233039#M777 <HTML><HEAD></HEAD><BODY><P>query the slope raster for slopes &lt;3% (raster calculator or the Con tool amongst several methods)</P><P>It will produce an indicator grid of values 0 and 1.&nbsp; Set the 0 to no color and 1 to whatever you want</P></BODY></HTML> Mon, 02 Apr 2018 19:08:55 GMT https://community.esri.com/t5/arcgis-mapping-and-charting-questions/slope-map/m-p/233039#M777 DanPatterson_Retired 2018-04-02T19:08:55Z Re: slope map https://community.esri.com/t5/arcgis-mapping-and-charting-questions/slope-map/m-p/233040#M778 <HTML><HEAD></HEAD><BODY><P>Ok, I'll clarify. I am a novice at GIS; haven't used it in 15 years.</P><P>I'm on ArcGIS Desktop. I loaded the "Terrain: Slope Map" and the "Terrain: Slope in Degrees" map from ArcGIS's online portal into my project. I have zoomed into the area in interest (USA southwest deserts), opened the Raster Functions/ Calculator. Now I have no idea what to enter in the boxes for "Raster Variables" box = box and the Expression box. I'm assuming the Expression box is something like Value&lt;3, but is "Value" a legitimate Raster Variable? Do I need to crop the raster area before I proceed? Do I leave Cellsize Type as the default of "Max of" and Extent Type as the default "Intersection of"? The help docs state that the Terrain: Slope Map is an on-the-fly server-side calculation for visualization purposes. It says the Terrain: Slope in Degrees map is for analysis. On which do I run the calculator, and what are the variables?</P><P>When I looked in the help docs, their calculator page screenshots look nothing like the Raster Function pane I have on my screen.&nbsp;I'm an architect, not a GIS developer. Thanks for the help.</P><P>Matt</P></BODY></HTML> Wed, 04 Apr 2018 19:30:46 GMT https://community.esri.com/t5/arcgis-mapping-and-charting-questions/slope-map/m-p/233040#M778 MattFlynn2 2018-04-04T19:30:46Z