https://community.esri.com/t5/arcgis-pro-questions/problems-with-idw-tool/m-p/1512197#M86168 <P>Hi!</P><P>I have a population density raster that I have extracted into points created with Create Fishnet tool (Fig 1.) I have tried to interpolate the data to cover my whole study area but changing power or search radius doesn't change anything when I change the default output cell size (2560). The output rasters are identical no matter what kind of parameters I set (Fig 2.). Only if I change output cell size, I get something that looks a bit more like the result I am needing. Why doesn't the IDW tool work with any other cell size than set by default?</P><P>In addition, the output raster has a systematic structure with lower values after every 64 kilometers (those lighter dots in the Fig 3.) Why do I end up with those false values? I have checked the input data several times and there is no structure like that.</P><P>I am very grateful if someone could help me!</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="another_student_0-1722325719291.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/111054iE5DEAFDC97488E6B/image-size/medium?v=v2&amp;px=400" role="button" title="another_student_0-1722325719291.png" alt="another_student_0-1722325719291.png" /></span></P><P>Fig 1.</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="another_student_1-1722325719314.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/111056i2F409E6C968B746E/image-size/medium?v=v2&amp;px=400" role="button" title="another_student_1-1722325719314.png" alt="another_student_1-1722325719314.png" /></span></P><P>Fig 2.</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="another_student_2-1722325719303.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/111055i33977B667D6B8394/image-size/medium?v=v2&amp;px=400" role="button" title="another_student_2-1722325719303.png" alt="another_student_2-1722325719303.png" /></span></P><P>Fig 3.</P> Tue, 30 Jul 2024 07:49:59 GMT another_student 2024-07-30T07:49:59Z https://community.esri.com/t5/arcgis-pro-questions/problems-with-idw-tool/m-p/1512197#M86168 <P>Hi!</P><P>I have a population density raster that I have extracted into points created with Create Fishnet tool (Fig 1.) I have tried to interpolate the data to cover my whole study area but changing power or search radius doesn't change anything when I change the default output cell size (2560). The output rasters are identical no matter what kind of parameters I set (Fig 2.). Only if I change output cell size, I get something that looks a bit more like the result I am needing. Why doesn't the IDW tool work with any other cell size than set by default?</P><P>In addition, the output raster has a systematic structure with lower values after every 64 kilometers (those lighter dots in the Fig 3.) Why do I end up with those false values? I have checked the input data several times and there is no structure like that.</P><P>I am very grateful if someone could help me!</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="another_student_0-1722325719291.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/111054iE5DEAFDC97488E6B/image-size/medium?v=v2&amp;px=400" role="button" title="another_student_0-1722325719291.png" alt="another_student_0-1722325719291.png" /></span></P><P>Fig 1.</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="another_student_1-1722325719314.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/111056i2F409E6C968B746E/image-size/medium?v=v2&amp;px=400" role="button" title="another_student_1-1722325719314.png" alt="another_student_1-1722325719314.png" /></span></P><P>Fig 2.</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="another_student_2-1722325719303.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/111055i33977B667D6B8394/image-size/medium?v=v2&amp;px=400" role="button" title="another_student_2-1722325719303.png" alt="another_student_2-1722325719303.png" /></span></P><P>Fig 3.</P> Tue, 30 Jul 2024 07:49:59 GMT https://community.esri.com/t5/arcgis-pro-questions/problems-with-idw-tool/m-p/1512197#M86168 another_student 2024-07-30T07:49:59Z https://community.esri.com/t5/arcgis-pro-questions/problems-with-idw-tool/m-p/1563177#M90646 <P>There are a lot of IDW choices in the geoprocessing pane. Make sure you have chosen IDW (spatial analysis)</P><P>I changed the cell size in the pane and it worked using the tool I just mentioned.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="StephanieGrier_0-1732747794355.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/120523i2AD545E5CD97B8F0/image-size/medium?v=v2&amp;px=400" role="button" title="StephanieGrier_0-1732747794355.png" alt="StephanieGrier_0-1732747794355.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="StephanieGrier_1-1732747856619.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/120524iDB2EEA72663DDDCA/image-size/medium?v=v2&amp;px=400" role="button" title="StephanieGrier_1-1732747856619.png" alt="StephanieGrier_1-1732747856619.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P> Wed, 27 Nov 2024 22:51:26 GMT https://community.esri.com/t5/arcgis-pro-questions/problems-with-idw-tool/m-p/1563177#M90646 StephanieGrier 2024-11-27T22:51:26Z