GSR2 is required to define the coordinate system. The grid has the same coordinate system as the original data file, but the. It is recommended to check the GS Reference (Version 2) file if you intend to use the grid file in Surfer, as the GSR2 retains all of the information needed. ![]() The Export Options dialog appears with the option to save the coordinate system information. Surfer prompts to save the coordinate system and projection information, if one is specified for the map. The Export Contours command exports the currently selected contour map as an AutoCAD. ![]() To retain the Z information for contour lines for use in other mapping programs, click the Map Tools | Layer Tools | Export Contours command or the button.
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