https://community.esri.com/t5/arcgis-enterprise-questions/imageserver-getsamples-interpolation-takes-into/m-p/1194008#M33547 <P>Hello ImageServer experts,</P><P>I am running into an issue and I am wondering whether it is a bug or if I missed anything.</P><P>We have a mosaic dataset published and raster has no data value configured:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="NicolasGIS_0-1658329819348.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/46295i518EFC4D3B3D55C1/image-size/medium?v=v2&amp;px=400" role="button" title="NicolasGIS_0-1658329819348.png" alt="NicolasGIS_0-1658329819348.png" /></span></P><P>But when I query the ImageServer using "getSamples" operation, to get pixel information nearby an aera surrounded with no data value, I get a very weird result as if the no_data pixel value, was taken into account in the interpolation:&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="NicolasGIS_3-1658330864929.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/46300iAF3E86863E6B4DDA/image-size/medium?v=v2&amp;px=400" role="button" title="NicolasGIS_3-1658330864929.png" alt="NicolasGIS_3-1658330864929.png" /></span></P><P>If I do the same query operation in ArcGIS pro at the very same coordinate, I get a correct value:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="NicolasGIS_5-1658331053768.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/46303i3D6E0658907F1585/image-size/medium?v=v2&amp;px=400" role="button" title="NicolasGIS_5-1658331053768.png" alt="NicolasGIS_5-1658331053768.png" /></span></P><P>Question: does ArcGIS Image Server getSamples operation take into account pixels value defined as no_data while doing interpolation ? If yes, do you consider legitimate ? To me, it's strange.</P><P>&nbsp;</P><P>Many thanks for help !</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 20 Jul 2022 15:36:59 GMT NicolasGIS 2022-07-20T15:36:59Z https://community.esri.com/t5/arcgis-enterprise-questions/imageserver-getsamples-interpolation-takes-into/m-p/1194008#M33547 <P>Hello ImageServer experts,</P><P>I am running into an issue and I am wondering whether it is a bug or if I missed anything.</P><P>We have a mosaic dataset published and raster has no data value configured:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="NicolasGIS_0-1658329819348.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/46295i518EFC4D3B3D55C1/image-size/medium?v=v2&amp;px=400" role="button" title="NicolasGIS_0-1658329819348.png" alt="NicolasGIS_0-1658329819348.png" /></span></P><P>But when I query the ImageServer using "getSamples" operation, to get pixel information nearby an aera surrounded with no data value, I get a very weird result as if the no_data pixel value, was taken into account in the interpolation:&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="NicolasGIS_3-1658330864929.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/46300iAF3E86863E6B4DDA/image-size/medium?v=v2&amp;px=400" role="button" title="NicolasGIS_3-1658330864929.png" alt="NicolasGIS_3-1658330864929.png" /></span></P><P>If I do the same query operation in ArcGIS pro at the very same coordinate, I get a correct value:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="NicolasGIS_5-1658331053768.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/46303i3D6E0658907F1585/image-size/medium?v=v2&amp;px=400" role="button" title="NicolasGIS_5-1658331053768.png" alt="NicolasGIS_5-1658331053768.png" /></span></P><P>Question: does ArcGIS Image Server getSamples operation take into account pixels value defined as no_data while doing interpolation ? If yes, do you consider legitimate ? To me, it's strange.</P><P>&nbsp;</P><P>Many thanks for help !</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 20 Jul 2022 15:36:59 GMT https://community.esri.com/t5/arcgis-enterprise-questions/imageserver-getsamples-interpolation-takes-into/m-p/1194008#M33547 NicolasGIS 2022-07-20T15:36:59Z