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Depression contours

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5 comments

  • Official comment
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    Drew Dudley

    Hello CSyrett,

    Thank you for posting your question on the Surfer Community forum. It is not currently possible to add hachures to the contour lines that are generated from a SHP, you will need to grid the data first and create a contour map. It is possible to change the line style of selected polyline lines to use the Solid thin - Half ticks, right style that look similar to hachures:

    Surfer does have a quick way of creating a grid file from a vector file like SHP. You can use the Grids | New Grid | Grid from Contours command to generate the grid file. Once the grid file has been created, you can create the contour map and add hachures to the contour lines. 

    Please let me know if I can be of any further assistance!

    Sincerely,
    Drew Dudley
    Technical Support

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    Kari Dickenson

    Hello,

    There are different methods now in Surfer 14 to calculate the contour levels. The Surfer 8 method is now called "Advanced". So to see the levels properties that you did in Surfer 8 (e.g. hach), you can:

    1. Select the Contours layer from the Contents window.
    2. In the Properties window, click the Levels tab.
    3. Change the Level method to Advanced.
    4. Click the Edit levels button. Now you see a dialog very similar to what you had in Surfer 8.
    5. Click the Hach button, make your changes for the hachures and click OK and OK to apply the changes.

     

    Thanks,
    Kari

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  • Avatar
    CSyrett

    I have a set of contours that was created in other software, as a shapefile. The lines all have elevations as an attribute. Is there any way that I can import this shapefile into Surfer 15 and add depression hachures, without first having to create a grid out of it?

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    CSyrett

    Thanks, Drew, that half-tick style just might fit the bill. Any esoteric way to automatically select only contours that are within an area of depression?

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    Drew Dudley

    Hi CSyrettt, 

    Welcome! There really is no way for Surfer to know which direction is a depression as there is not continuous surface or data for Surfer to make this determination when working with discrete data like a vector file. The best way forward would be to create the continuous surface by gridding the SHP and then working with a contour map. 

    Thanks!

    Drew

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