https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073280#M2714 <P>Thank you for your reply. I am using ArcMap and it looks like the Merge tool only works for points, lines, and polygon features:</P><DIV><P>"Combines multiple input datasets into a single, new output dataset. This tool can combine point, line, or polygon feature classes or tables.</P><P>Use the Append tool to combine input datasets with an existing dataset."</P></DIV> Mon, 28 Jun 2021 16:33:21 GMT cp_0101 2021-06-28T16:33:21Z https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073248#M2712 <P>I am trying to combine 3 DEM rasters that do not overlap. When I use the Mosaic to New Raster tool (using LAST as the mosaic operator), I am noticing that the new raster has incorrect values. The new raster does not show elevations of the original rasters that exist at those points. The values seem to be skewed slightly, and I am not sure what it is interpolating since there are no overlaps in datasets.</P><P>&nbsp;</P><P>All rasters are on the same projected coordinate system, with the same number of bands (1) and the same cell size (5') which are all the same settings specified in the Mosaic to New Raster dialog window. Is there a better tool to combine rasters that do not overlap? So far the Mosaic to New Raster tool works well when there are overlaps.</P> Mon, 28 Jun 2021 16:13:58 GMT https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073248#M2712 cp_0101 2021-06-28T16:13:58Z https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073266#M2713 <P>If they don't overlap and are of the same data type</P><P><A href="https://pro.arcgis.com/en/pro-app/latest/arcpy/image-analyst/merge.htm" target="_blank">Merge—ArcGIS Pro | Documentation</A></P><P>make sure you set an extent that covers the combined areal extent</P> Mon, 28 Jun 2021 16:25:00 GMT https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073266#M2713 DanPatterson 2021-06-28T16:25:00Z https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073280#M2714 <P>Thank you for your reply. I am using ArcMap and it looks like the Merge tool only works for points, lines, and polygon features:</P><DIV><P>"Combines multiple input datasets into a single, new output dataset. This tool can combine point, line, or polygon feature classes or tables.</P><P>Use the Append tool to combine input datasets with an existing dataset."</P></DIV> Mon, 28 Jun 2021 16:33:21 GMT https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073280#M2714 cp_0101 2021-06-28T16:33:21Z https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073314#M2715 <P>arcmap... so long ago <span class="lia-unicode-emoji" title=":winking_face:">😉</span></P><P><A href="https://desktop.arcgis.com/en/arcmap/latest/tools/data-management-toolbox/mosaic-to-new-raster.htm" target="_blank">Mosaic To New Raster (Data Management)—ArcMap | Documentation (arcgis.com)</A></P><P>would be the one, with Last as the default and First for the colormap option</P><P>If there is no overlap, then there should be nodata values.</P><P>You will have to provide an example&nbsp;</P><P>Since&nbsp;<A href="https://desktop.arcgis.com/en/arcmap/latest/manage-data/raster-and-images/mosaic-operators.htm" target="_blank">Mosaic operators—ArcMap | Documentation (arcgis.com)</A>&nbsp;only deals with overlaps treatment,</P> Mon, 28 Jun 2021 17:00:53 GMT https://community.esri.com/t5/arcmap-questions/how-to-combine-multiple-rasters-that-do-not/m-p/1073314#M2715 DanPatterson 2021-06-28T17:00:53Z