topic Re: Raster calculator and weighted sum both outputing blank results in Data Management Questions https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45346#M2550 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>Glad to hear that your issue is fixed.</SPAN><BR /><BR /><SPAN>For future reference, just wanted to share this informative blog posting - </SPAN><A href="http://blogs.esri.com/Support/blogs/supportcenter/archive/2011/08/02/null-doesn-t-mean-zero.aspx">"Null Doesn�??t Mean Zero?"</A><SPAN> which talks about the issue you were facing before.</SPAN><BR /><BR /><SPAN>Thank you so much.</SPAN></BODY></HTML> Thu, 19 Jan 2012 13:45:08 GMT TarunJaiswal 2012-01-19T13:45:08Z Raster calculator and weighted sum both outputing blank results https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45343#M2547 <HTML><HEAD></HEAD><BODY><SPAN>I'm having some problems getting either the Raster calculator or the weighted sum operation to work right.&nbsp; I've created several rasters from polygons and am trying to figure out the weighted degree of overlap.&nbsp; Unfortunately every time I run the raster calculator or weighted sum operations, all I get is an empty raster.&nbsp; Anyone know what's going wrong?</SPAN><BR /><BR /><SPAN>All the rasters have the same extent.</SPAN><BR /><SPAN>All the rasters are the same resolution.</SPAN><BR /><SPAN>All the rasters have the same spatial reference (NAD 1983).</SPAN><BR /><BR /><SPAN>Can anyone help?</SPAN></BODY></HTML> Wed, 18 Jan 2012 15:03:26 GMT https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45343#M2547 PaudraigCurran 2012-01-18T15:03:26Z Re: Raster calculator and weighted sum both outputing blank results https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45344#M2548 <HTML><HEAD></HEAD><BODY><SPAN>Are you using 'float'. It might make a difference.</SPAN></BODY></HTML> Wed, 18 Jan 2012 22:48:59 GMT https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45344#M2548 SamCoggins1 2012-01-18T22:48:59Z Re: Raster calculator and weighted sum both outputing blank results https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45345#M2549 <HTML><HEAD></HEAD><BODY><SPAN>With some help it is now fixed.&nbsp; Turns out what I was doing when I created the rasters from the polygons anywhere there wasn't a polygon wound up with a value of "NoData" instead of 0.&nbsp; And if there's Nodata in any of the cells that get input into a weighted sum or the raster calculator, then the output cell will have NoData as its' value.</SPAN><BR /><BR /><SPAN>I just have to go through and reclassify the rasters so that NoData = 0 and then re-run my raster calculations.</SPAN></BODY></HTML> Thu, 19 Jan 2012 12:44:37 GMT https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45345#M2549 PaudraigCurran 2012-01-19T12:44:37Z Re: Raster calculator and weighted sum both outputing blank results https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45346#M2550 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>Glad to hear that your issue is fixed.</SPAN><BR /><BR /><SPAN>For future reference, just wanted to share this informative blog posting - </SPAN><A href="http://blogs.esri.com/Support/blogs/supportcenter/archive/2011/08/02/null-doesn-t-mean-zero.aspx">"Null Doesn�??t Mean Zero?"</A><SPAN> which talks about the issue you were facing before.</SPAN><BR /><BR /><SPAN>Thank you so much.</SPAN></BODY></HTML> Thu, 19 Jan 2012 13:45:08 GMT https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45346#M2550 TarunJaiswal 2012-01-19T13:45:08Z Re: Raster calculator and weighted sum both outputing blank results https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45347#M2551 <HTML><HEAD></HEAD><BODY><SPAN>I was also having problems with the Weighted Sum tool outputting a complete "NoData" raster. I checked the extent and the inputs, but could not find any problems. </SPAN><BR /><BR /><SPAN>I ended up opening a new model and recreating the work flow from scratch. After re-building the tool within model builder, the tool worked perfectly.</SPAN></BODY></HTML> Wed, 13 Nov 2013 14:35:49 GMT https://community.esri.com/t5/data-management-questions/raster-calculator-and-weighted-sum-both-outputing/m-p/45347#M2551 NicoleCarlozo 2013-11-13T14:35:49Z