topic Re: I have precipitation raster map from WorldClim website for a watershed in Central Asia. How can I generate R factor map (Erosivity) for RUSLE calculation using WorldClim database in ArcMap? in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-have-precipitation-raster-map-from-worldclim/m-p/471996#M6765 <HTML><HEAD></HEAD><BODY><P>Thank You vert much!:)</P></BODY></HTML> Fri, 19 May 2017 00:48:38 GMT MeldebekovaGauhar 2017-05-19T00:48:38Z I have precipitation raster map from WorldClim website for a watershed in Central Asia. How can I generate R factor map (Erosivity) for RUSLE calculation using WorldClim database in ArcMap? https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-have-precipitation-raster-map-from-worldclim/m-p/471994#M6763 <HTML><HEAD></HEAD><BODY><P>#RUSLE <A href="https://community.esri.com/t5/tag/erosivity/tg-p">#erosivity</A> <IMG alt="" class="image-1 jive-image j-img-original" src="https://community.esri.com/legacyfs/online/352541_5161.png" style="height: auto;" /></P></BODY></HTML> Thu, 18 May 2017 10:22:00 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-have-precipitation-raster-map-from-worldclim/m-p/471994#M6763 MeldebekovaGauhar 2017-05-18T10:22:00Z Re: I have precipitation raster map from WorldClim website for a watershed in Central Asia. How can I generate R factor map (Erosivity) for RUSLE calculation using WorldClim database in ArcMap? https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-have-precipitation-raster-map-from-worldclim/m-p/471995#M6764 <HTML><HEAD></HEAD><BODY><P>In<A href="http://pro.arcgis.com/en/pro-app/tool-reference/spatial-analyst/building-expressions-in-raster-calculator.htm"> Raster Calculator</A>, you could have an expression as below</P><P></P><P><STRONG><EM>Con(InRas1&nbsp;&lt; 0, 0, Con(InRas1&nbsp;&lt; 850, ((0.04830)*(InRas1)**(1.610))/(17.02), ((587.7) - (1.219)*(InRas1) + (0.004105)*(InRas1)**(2.0))/(17.02)))</EM></STRONG></P><P><STRONG></STRONG></P><P>where InRas1: Input Precipitation Raster</P><P>Assumption: Precipitation values are in mm</P></BODY></HTML> Thu, 18 May 2017 11:41:22 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-have-precipitation-raster-map-from-worldclim/m-p/471995#M6764 JayantaPoddar 2017-05-18T11:41:22Z Re: I have precipitation raster map from WorldClim website for a watershed in Central Asia. How can I generate R factor map (Erosivity) for RUSLE calculation using WorldClim database in ArcMap? https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-have-precipitation-raster-map-from-worldclim/m-p/471996#M6765 <HTML><HEAD></HEAD><BODY><P>Thank You vert much!:)</P></BODY></HTML> Fri, 19 May 2017 00:48:38 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-have-precipitation-raster-map-from-worldclim/m-p/471996#M6765 MeldebekovaGauhar 2017-05-19T00:48:38Z