topic Re: Minus 3D Analyst tool - interpolation method? in 3D Questions https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234326#M1441 <HTML><HEAD></HEAD><BODY><P>You might want to mark this closed then Thomas</P></BODY></HTML> Wed, 15 Mar 2017 20:24:06 GMT DanPatterson_Retired 2017-03-15T20:24:06Z Minus 3D Analyst tool - interpolation method? https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234323#M1438 <HTML><HEAD></HEAD><BODY><P>I use the <A href="http://desktop.arcgis.com/en/arcmap/latest/tools/3d-analyst-toolbox/minus.htm">Minus 3D Analyst tool </A>to compute the difference between two DEM raster models.</P><P>The cell size is 0.5 m and 0.4 m. I use the "arcpy.env.cellSize" to define the cell size to 0.4.</P><P></P><P><STRONG>My question is</STRONG>: What interpolation method does the tool use?</P><P></P><P>I hope it bilinear interpolation, but&nbsp;often&nbsp;the nearest neighbor assignment resampling technique is used.</P><P></P><P>Please help me finde the dokumentation for this&nbsp;<IMG src="https://community.esri.com/legacyfs/online/emoticons/happy.png" /></P></BODY></HTML> Wed, 15 Mar 2017 18:02:44 GMT https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234323#M1438 ThomasL 2017-03-15T18:02:44Z Re: Minus 3D Analyst tool - interpolation method? https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234324#M1439 <HTML><HEAD></HEAD><BODY><P>When you ran the tool, you can check the environments setting in the<A href="https://pro.arcgis.com/en/pro-app/tool-reference/environment-settings/resampling-method.htm"> Environments tab</A>&nbsp; what did you set it to or did you check?&nbsp; Alternately, resample first, ... minus with the appropriate matching files with the correct cell size just to be extra sure.</P></BODY></HTML> Wed, 15 Mar 2017 18:28:19 GMT https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234324#M1439 DanPatterson_Retired 2017-03-15T18:28:19Z Re: Minus 3D Analyst tool - interpolation method? https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234325#M1440 <HTML><HEAD></HEAD><BODY><P>Thank you Dan!</P><P></P><P>Under Raster Storage I fund the Resample setting:</P><P></P><P><IMG alt="" class="image-1 jive-image j-img-original" src="https://community.esri.com/legacyfs/online/341068_interpolation.png" style="width: 620px; height: 434px;" /></P><P></P><P>As I understand your link I will need to add the following line to my code to:</P><P></P><BLOCKQUOTE class="jive_macro_quote jive-quote jive_text_macro"><P><SPAN class="" style="color: #4d4d4d;">arcpy</SPAN><SPAN class="" style="color: #4d4d4d;">.</SPAN><SPAN class="" style="color: #4d4d4d;">env</SPAN><SPAN class="" style="color: #4d4d4d;">.</SPAN><SPAN class="" style="color: #4d4d4d;">resamplingMethod</SPAN><SPAN style="color: #4d4d4d; background-color: #fafafa;"> </SPAN><SPAN class="" style="color: #4d4d4d;">=</SPAN><SPAN style="color: #4d4d4d; background-color: #fafafa;"> </SPAN><SPAN class="" style="color: #a31515;">"BILINEAR"</SPAN></P></BLOCKQUOTE><P></P><P>Perfect!</P></BODY></HTML> Wed, 15 Mar 2017 19:38:29 GMT https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234325#M1440 ThomasL 2017-03-15T19:38:29Z Re: Minus 3D Analyst tool - interpolation method? https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234326#M1441 <HTML><HEAD></HEAD><BODY><P>You might want to mark this closed then Thomas</P></BODY></HTML> Wed, 15 Mar 2017 20:24:06 GMT https://community.esri.com/t5/3d-questions/minus-3d-analyst-tool-interpolation-method/m-p/234326#M1441 DanPatterson_Retired 2017-03-15T20:24:06Z