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altering/editing z values of grid nodes in clusters?

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    Pascal von Sengbusch

    I saw that there should be a "brush" tool, but I can't find it. Is it only included in surfer 14? may be I don't have the latest update of surfer 13.......

    Thanks,

    Pascal

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    Thierry Duren

    Hello sengbush,

    The new brush tool that was created in Version14 of Surfer will probably help you (have a go at the demo version: saving and exporting is possible for 2 weeks)

    My need is slightly different as I would want to define a constant Z value inside a polygon that could be defined in bln format for example. In some cases the whole grid is covered in polygons in which a different value is to be written.

     

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    Jennifer Woodson

    Hello sengbush,

    Thank you for your post. Surfer 13 does not have a way to select multiple grid nodes at once. However, Thierry is correct that the brush tool was added in Surfer 14. You don't necessarily select multiple nodes at once, but you can brush over multiple nodes to assign them the same value and adjust the size of the brush to cover one or more nodes at once. I do recommend downloading the free trial. You can do so here: http://www.goldensoftware.com/products/surfer/trial. 

    ~Jennifer

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    Jennifer Woodson

    Hello Thierry,

    Thank you for your comment. You're absolutely correct about Surfer 14's brush tool.

    As far as your need, there is not an automatic way to do this at this time. However, we do have requests for this feature, and I've added your comments to the feature request report.

    I have an idea for a workaround, but you'll need to start with a grid that is not blanked. If you do need to actually blank the grid, you can do so at the end.

    What I recommend is blanking the grid to one of the polygons. Then, you can use the Grids | Calculate | Math command to remap the blanked regions to your desired value, using the function A. Repeat for each polygon. Then, if you need to actually blank the grid, you can do so after blanking and remapping the values. Your Grid Math dialog may look like below, if you were remapping the values to 150.


    Below is an image demonstrating this.

    ~Jennifer

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    Thierry Duren

    Thank you

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