#Arcgis define raster projection update#

Top_wrong = float(arcpy.GetRasterProperties_management(in_rast, 'TOP').getOutput(0)) Y_dim_correct = top_correct - bottom_correct X_dim_correct = right_correct - left_correct I was able to do so using the Shift and Rescale tools.

Nevertheless, I was interested to see whether I could use ArcPy to achieve the same results as editing the extent manually in the raster properties window. As noted by Vince, this shouldn't be this hard. This turned out to be a case of a projection issue (see my edits). Among other clues, a curved Canadian border on a Mercator projection (ugg) is pretty obviously wrong, in retrospect. When I use the right one, the map is displayed in the correct location. I was using the wrong projection definition.

The Shift tool alone won't work because the dimensions of the raster need to be adjusted in addition to location.

Although the Get Raster Properties tool can access the extent values (Top, Left, Right, Bottom), it does not appear that Set Raster Properties allows the extent properties to be modified.

I looked at the Set Raster Properties tool.

#Arcgis define raster projection update#

However, I need to update the extent for 100s of these files, so need a scriptable/arcpy solution. I can manually edit the extent in the properties window.I am looking for an ArcPy tool that would allow me to define the extent of the raster manually in the same way that I can define the projection using Define Projection. However, the raster appears in the wrong place on the map (centered at (0,0)).

Using the Define Projection tool, I am able to set the coordinate system without issue. However, I have the correct values for these parameters. ArcGIS doesn't read the projection or extent correctly due to issues with the input file. I have a raster data set I imported to ArcGIS from a netCDF file.