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When I change the coordinate system for my map in Surfer, it takes a long time then turns into a black blob or a mess of lines!

When changing the coordinate system in Surfer turns the map into a black blob or a mess of lines, most likely it is because you changed the coordinate system for the layer and not for the map itself. For the difference between setting the coordinate system for a layer and changing it for the map, please see: What's the difference between setting the coordinate system for a layer, and changing it for a map?

 

To change the coordinate system for the map, follow these steps:

  1. First, verify that each layer has a source coordinate system defined. This is important if the coordinate system for the layers is different than the coordinate system for the map. Select each layer in your map in the Contents window.
  2. In the Properties window click the Coordinate System tab. This is where you can see the source coordinate system for the layer. Be sure that the coordinate system here is appropriate for the file that each layer is created from. Click the Set button if you need to set or reset the source coordinate system for the layer.
  3. Once the source coordinate systems are appropriate for each layer in the map, select Map in the Contents window.
  4. In the Properties window, click the Coordinate System tab. This is where you can change the coordinate system for the map display.
  5. Click the Change button.
  6. In the Assign Coordinate System dialog, select the coordinate system you want the map to be displayed in and click OK. The map in the plot window is converted into the new coordinate system. All the layers are converted on-the-fly into the coordinates system of the map.

 

Updated January 16, 2017

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