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SafeMan

Importing an Auto Cad file into Surfer

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How would you go about importing a .dxf AutoCad2004 file into Surfer 8.0? My primary reason for doing this is to make groundwater elevation contours in Surfer off an Auto Cad Drawing.

Also, is it necessary to digitize all monitoring wells, once my map is imported into Surfer, so that I could begin assigning data to each well to make contours?

Thanks in advance to anyone and everyone who can help with this.

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Hi SafeMan,

- Surfer can load a DXF file as a base map with XY information only. If your DXF file has XYZ data for contours and other objects, convert the DXF to an XYZ data file with the free DXF2XYZ utility on the RockWare web site.

DXF2XYZ

http://www.rockware.com/downloads/freeSoftware.php#D

Choose the Grid | Data menu command to grid the XYZ data file, then choose Map | Contour Map | New Contour Map to display the contour map.

- You can digitize the locations of the monitor wells or load the information from an ASCII or Excel XLS file.

If you have further questions, please contact me.

Thanks,

Tom B

Tom Bresnahan

RockWare, Inc.

[email protected]

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Hi Tom B,

Thanks for the help. I made sure my Auto Cad document only had XY data and not XYZ data, and it did. When I clicked on "Map" then "Base Map..." and selected the .dxf file I wanted to import, after selecting this file it plotted on my map as a very small image (see attachment).

How would I adjust the image I want to import into AutoCad so that it would fill more of the plot document? It is so small that I barely see it (see the bottom left of the base map near 0 on the x axis).

Is this problem becasue of something of how I saved it from AutoCad? Does it have to do with the image size or how I capture/save it in Auto Cad?

Thanks for all your help, as I'm quite the novice in both programs, it turns out!

-SafeMan

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Hi SafeMan,

The attachment did not come through, but the small base map you describe can be caused by unsupported objects in the DXF file being imported with incorrect coordinates. You can resolve the problem by double-clicking on the base map to display the Properties dialog, click on the Limits tab, and specify the desired values for the XY min and max. Next, click on the Scale tab and specify the desired scale or map length.

Thanks,

Tom B

Tom Bresnahan

RockWare, Inc.

[email protected]

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