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| How can I export the direction and magnitude data from a 1-grid vector map? |
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There is not a direct way to export the direction and magnitude information from a 1-grid vector map to an ASCII text file, but you can get this information using Grid | Calculus:
1. Export the direction/angle data. To do this, go to Grid | Calculus, select your grid file and click Open. Choose Terrain Modeling | Terrain Aspect. For the Output Grid File, click the yellow open folder button and change the Save as type to ASCII XYZ (Surfer 8) or DAT XYZ (Surfer 9 and 10). Click Save and OK. The DAT file will be created with the X, Y and angle data.
2. Export the magnitude data. To do this, go to Grid | Calculus, select your grid file and click Open. Choose either Terrain Modeling | Terrain Slope or Differential & Integral Operator | Gradient Operator. For the Output Grid File, click the yellow open folder button and change the Save as type to ASCII XYZ (Surfer 8) or DAT XYZ (Surfer 9 and 10). Click Save and OK. The DAT file will be created with the X, Y and magnitude data.
3. Combine the data. Open the two DAT files in the Surfer worksheet. One has XY-Angle information and one has XY-Magnitude information. Copy Column C from one data file and paste it into Column D in the other data file, so that all data is in one file. Go to File | Save As to resave the combined data.
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