topic Re: Weighted average of raster data inside polygons in Data Management Questions https://community.esri.com/t5/data-management-questions/weighted-average-of-raster-data-inside-polygons/m-p/248840#M14166 <HTML><HEAD></HEAD><BODY><SPAN>Nathan,</SPAN><BR /><BR /><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000w8000000.htm">Zonal Statistics as Table</A><SPAN> is a good starting point.&nbsp; Your polygons will be the zone features, and run it on the greenness and wetness bands separately.&nbsp; The tool only takes 1 band rasters, so you can't input your multiband dataset. One of the stats returned to you is Mean value per zone.</SPAN><BR /><BR /><SPAN>Eric</SPAN></BODY></HTML> Fri, 12 Aug 2011 15:58:37 GMT EricRice 2011-08-12T15:58:37Z Weighted average of raster data inside polygons https://community.esri.com/t5/data-management-questions/weighted-average-of-raster-data-inside-polygons/m-p/248839#M14165 <HTML><HEAD></HEAD><BODY><SPAN>I have a bunch of polygons that are overlayed on top of some raster data (ENVI Tasseled Cap Bands). I want to determine what the average value of wetness or greenness in each polygon. Can anyone point me in the right direction?</SPAN></BODY></HTML> Thu, 11 Aug 2011 04:51:40 GMT https://community.esri.com/t5/data-management-questions/weighted-average-of-raster-data-inside-polygons/m-p/248839#M14165 NathanCooper 2011-08-11T04:51:40Z Re: Weighted average of raster data inside polygons https://community.esri.com/t5/data-management-questions/weighted-average-of-raster-data-inside-polygons/m-p/248840#M14166 <HTML><HEAD></HEAD><BODY><SPAN>Nathan,</SPAN><BR /><BR /><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000w8000000.htm">Zonal Statistics as Table</A><SPAN> is a good starting point.&nbsp; Your polygons will be the zone features, and run it on the greenness and wetness bands separately.&nbsp; The tool only takes 1 band rasters, so you can't input your multiband dataset. One of the stats returned to you is Mean value per zone.</SPAN><BR /><BR /><SPAN>Eric</SPAN></BODY></HTML> Fri, 12 Aug 2011 15:58:37 GMT https://community.esri.com/t5/data-management-questions/weighted-average-of-raster-data-inside-polygons/m-p/248840#M14166 EricRice 2011-08-12T15:58:37Z Re: Weighted average of raster data inside polygons https://community.esri.com/t5/data-management-questions/weighted-average-of-raster-data-inside-polygons/m-p/248841#M14167 <HTML><HEAD></HEAD><BODY><BLOCKQUOTE class="jive-quote">Nathan,<BR /><BR /><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000w8000000.htm">Zonal Statistics as Table</A> is a good starting point.&nbsp; Your polygons will be the zone features, and run it on the greenness and wetness bands separately.&nbsp; The tool only takes 1 band rasters, so you can't input your multiband dataset. One of the stats returned to you is Mean value per zone.<BR /><BR />Eric</BLOCKQUOTE><BR /><SPAN> </SPAN><BR /><SPAN>The question was about AREA-WEIGHTED mean.&nbsp; Zonal Stats does NOT do that, as I understand it.&nbsp; Is that correct?</SPAN></BODY></HTML> Tue, 26 Mar 2013 16:40:22 GMT https://community.esri.com/t5/data-management-questions/weighted-average-of-raster-data-inside-polygons/m-p/248841#M14167 AaronKing 2013-03-26T16:40:22Z