topic Sky view factor from DEM please help!! in 3D Questions https://community.esri.com/t5/3d-questions/sky-view-factor-from-dem-please-help/m-p/451540#M2720 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><SPAN>I have a problem: I have a DEM and need as output a raster in the same resolution as the DEM with a value from 0 - 1 where 1 means that the whole hemisphere is visible and not obstructed by terrain.</SPAN><BR /><SPAN>For me that should be something like sky view factor.</SPAN><BR /><SPAN>Could you tell me how to calculate it?</SPAN><BR /><SPAN>I cant find any help in the forum.</SPAN><BR /><SPAN>Thanks,</SPAN><BR /><SPAN>JJJ</SPAN></BODY></HTML> Fri, 01 Jun 2012 20:01:24 GMT JogglAber 2012-06-01T20:01:24Z Sky view factor from DEM please help!! https://community.esri.com/t5/3d-questions/sky-view-factor-from-dem-please-help/m-p/451540#M2720 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><SPAN>I have a problem: I have a DEM and need as output a raster in the same resolution as the DEM with a value from 0 - 1 where 1 means that the whole hemisphere is visible and not obstructed by terrain.</SPAN><BR /><SPAN>For me that should be something like sky view factor.</SPAN><BR /><SPAN>Could you tell me how to calculate it?</SPAN><BR /><SPAN>I cant find any help in the forum.</SPAN><BR /><SPAN>Thanks,</SPAN><BR /><SPAN>JJJ</SPAN></BODY></HTML> Fri, 01 Jun 2012 20:01:24 GMT https://community.esri.com/t5/3d-questions/sky-view-factor-from-dem-please-help/m-p/451540#M2720 JogglAber 2012-06-01T20:01:24Z Re: Sky view factor from DEM please help!! https://community.esri.com/t5/3d-questions/sky-view-factor-from-dem-please-help/m-p/451541#M2721 <HTML><HEAD></HEAD><BODY><SPAN>Have you looked at </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Performing_visibility_analysis_with_Viewshed_and_Observer_Points/009z000000v8000000/">Viewshed</A><SPAN>?</SPAN></BODY></HTML> Fri, 01 Jun 2012 20:11:34 GMT https://community.esri.com/t5/3d-questions/sky-view-factor-from-dem-please-help/m-p/451541#M2721 DarrenWiens2 2012-06-01T20:11:34Z Re: Sky view factor from DEM please help!! https://community.esri.com/t5/3d-questions/sky-view-factor-from-dem-please-help/m-p/451542#M2722 <HTML><HEAD></HEAD><BODY><SPAN>Thanks, but Viewshed seems to return the visible pixels from a point. However, I am looking for a raster with same extent and cell-size as DEM that gives instead of the z-value, a percentage of how much of the sky is visible.</SPAN><BR /><SPAN>I dont think viewshed does that or am I wrong??</SPAN></BODY></HTML> Mon, 04 Jun 2012 12:37:35 GMT https://community.esri.com/t5/3d-questions/sky-view-factor-from-dem-please-help/m-p/451542#M2722 JogglAber 2012-06-04T12:37:35Z