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Surfer gridding with increasing spacing

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5 comments

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    Justine Carstairs

    Hi Paolo,

    Surfer currently only supports 2D gridding, so you are not able to specify a thickness or number of nodes in the Z direction. The Z direction will always be a single layer of grid nodes. I have added your vote for 3D gridding in Surfer to our feature request file. In the meantime, you may find our 3D modelling software Voxler is more suited to your needs.

     

    Best wishes,

    Justine Carstairs

    Golden Software

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    Paolo Zamparutti

    Hi Justine,
    My question was referring to a 2D contouring. Z could be Y. In case of geophysical sections for example they are xz section.
    Paolo

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    Justine Carstairs

    Hi Paolo,

    Thanks for the clarification! In that case yes, you can easily change the spacing between output nodes during gridding. In the Grid Data dialog, change the X spacing or Y spacing fields to suit your needs. These values will be in the units of your input data:

    If you are trying to have increasing spacing along an axis, this is not currently possible in Surfer. All nodes will be evenly spaced along an axis. I will also add your vote for irregular spacing of nodes during gridding to our feature request file!

     

    Best wishes,
    Justine Carstairs

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    Rockhound

    Are you working with ERI data? Looking to increase spacing as you go deeper because you have fewer datapoints? We typically grid our 2D ERI sections regularly, but I like the idea....post up if you figure a solution. You may be able to do this in Matlab.

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    Drew Dudley

    Hello Rockhound,

    Thank you for posting your comments and question. When gridding data in Surfer, the resulting grid file is always uniform as far as the grid resolution and spacing goes across the entire extent. There is no way to have variable spacing in different parts of the grid file. I have added a vote to our suggestion file for future versions of Surfer to have this type of functionality. My recommendation would be to use the spacing and resolution for the gridding that works for the portion of your data that is the sparsest.

     

    Thanks!

    Drew Dudley

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