https://community.esri.com/t5/arcgis-pro-questions/issues-w-weighted-sum-analysis-and-rasters/m-p/1339726#M74185 <P>Hello,</P><P>I am currently trying to create a 15 minute city index similar to the one created by the city of Cleveland (see: <A href="https://www.arcgis.com/home/item.html?id=95b2cce919be4240b5e938421ec8e07c" target="_blank" rel="noopener">https://www.arcgis.com/home/item.html?id=95b2cce919be4240b5e938421ec8e07c</A>) for my city. I am trying to follow the info available. I have created a bunch of service areas for certain amenities.</P><P>After this, I used the dissolve tool on each service area layer, then gave them a "score" attribute which is all 1 for now. Then I converted them to rasters, so I could use the weighted sum or weighted overlay tool to get an "index" of all the amenities to determine walkability. But when I do this, it only creates an extremely small raster consisting of the cells where every single amenity overlap. I am trying to get the raster type they ended up creating in Cleveland but I do not know exactly what to do. Below are the rasters I created from the service areas (theyre all on so they blend together).</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="SeanWillis_0-1697739262575.jpeg" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/83511i12CF86DEDB39E3B9/image-size/medium?v=v2&amp;px=400" role="button" title="SeanWillis_0-1697739262575.jpeg" alt="SeanWillis_0-1697739262575.jpeg" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">SeanWillis_0-1697739262575.jpeg</span></span></P><P>I think it could be because the service areas rasters dont have a void with a zero value or something that fills up the whole county. That means I would need a raster that looks like the one below, but I dont know how to make it. (this is just a SA raster on above the blank county raster).</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="SeanWillis_1-1697739418698.jpeg" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/83513i0AC116BBCBD773B7/image-size/medium?v=v2&amp;px=400" role="button" title="SeanWillis_1-1697739418698.jpeg" alt="SeanWillis_1-1697739418698.jpeg" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">SeanWillis_1-1697739418698.jpeg</span></span></P><P>Anyone have any ideas on how to either make the service area rasters work, or make them look like the one above? I am stumped.</P> Thu, 19 Oct 2023 18:18:51 GMT SeanWillis 2023-10-19T18:18:51Z https://community.esri.com/t5/arcgis-pro-questions/issues-w-weighted-sum-analysis-and-rasters/m-p/1339726#M74185 <P>Hello,</P><P>I am currently trying to create a 15 minute city index similar to the one created by the city of Cleveland (see: <A href="https://www.arcgis.com/home/item.html?id=95b2cce919be4240b5e938421ec8e07c" target="_blank" rel="noopener">https://www.arcgis.com/home/item.html?id=95b2cce919be4240b5e938421ec8e07c</A>) for my city. I am trying to follow the info available. I have created a bunch of service areas for certain amenities.</P><P>After this, I used the dissolve tool on each service area layer, then gave them a "score" attribute which is all 1 for now. Then I converted them to rasters, so I could use the weighted sum or weighted overlay tool to get an "index" of all the amenities to determine walkability. But when I do this, it only creates an extremely small raster consisting of the cells where every single amenity overlap. I am trying to get the raster type they ended up creating in Cleveland but I do not know exactly what to do. Below are the rasters I created from the service areas (theyre all on so they blend together).</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="SeanWillis_0-1697739262575.jpeg" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/83511i12CF86DEDB39E3B9/image-size/medium?v=v2&amp;px=400" role="button" title="SeanWillis_0-1697739262575.jpeg" alt="SeanWillis_0-1697739262575.jpeg" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">SeanWillis_0-1697739262575.jpeg</span></span></P><P>I think it could be because the service areas rasters dont have a void with a zero value or something that fills up the whole county. That means I would need a raster that looks like the one below, but I dont know how to make it. (this is just a SA raster on above the blank county raster).</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="SeanWillis_1-1697739418698.jpeg" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/83513i0AC116BBCBD773B7/image-size/medium?v=v2&amp;px=400" role="button" title="SeanWillis_1-1697739418698.jpeg" alt="SeanWillis_1-1697739418698.jpeg" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">SeanWillis_1-1697739418698.jpeg</span></span></P><P>Anyone have any ideas on how to either make the service area rasters work, or make them look like the one above? I am stumped.</P> Thu, 19 Oct 2023 18:18:51 GMT https://community.esri.com/t5/arcgis-pro-questions/issues-w-weighted-sum-analysis-and-rasters/m-p/1339726#M74185 SeanWillis 2023-10-19T18:18:51Z https://community.esri.com/t5/arcgis-pro-questions/issues-w-weighted-sum-analysis-and-rasters/m-p/1339744#M74189 <P>convert the nulls to 0 prior to doing the sum</P><P><A href="https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/h-changing-nodata-cells-to-a-value.htm" target="_blank">How to change NoData cells to a value—ArcGIS Pro | Documentation</A></P> Thu, 19 Oct 2023 19:14:16 GMT https://community.esri.com/t5/arcgis-pro-questions/issues-w-weighted-sum-analysis-and-rasters/m-p/1339744#M74189 DanPatterson 2023-10-19T19:14:16Z