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I export a GeoTIFF from Surfer, but it is not in map units!

A single 2D, non-rotated map will be exported to an image file in map coordinates if you choose to save the spatial referencing. If you export from a georeferenced Surfer map (i.e. a map with a coordinate system assigned to it) to an image file format and save the spatial reference information, but the image is georeferenced in page units (not map units), it is likely due to one of these reasons:

  1. You have more than one map object on the page.
  2. You have drawing objects (text, polylines, polygons, points, scale bar, color bar) on the page.
  3. The map you are exporting is rotated. 
  4. The map you are exporting is a 3D map. 

 

If your situation falls applies to #1 or #2 above, then there is a way to solve this. Follow these steps:

  1. Click File | Export, choose to export to the image file format you want and click Save.
  2. In the Export Options dialog, click the Spatial References tab.
  3. At the top, for the Coordinate System, select the Map you want to use for the coordinates of the referencing.
  4. Make sure one (or more) of the spatial reference formats is checked.
  5. Click OK and the image is exported with the spatial referencing.

Select the map as the coordinate system to export when exporting a file with multiple maps, or a map and drawn objects, to a GeoTIFF.

 

If your situation falls applies to #3 or #4 above, then there is not a way to get a georeferenced export. For a rotated map, you can remove the rotation and then export the map. Contact surfersupport@goldensoftware.com if you wish to add your vote for to our suggestion file for the ability to export a rotated map with georeferencing. Contact surfersupport@goldensoftware.com if you wish to add your vote for to our suggestion file for the ability to export a 3D map with georeferencing. 

 

Updated September 18, 2017

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