Export of Surfer v6 grids [aka GS Binary]

acogbill
acogbill Global Mapper UserTrusted User
edited February 2008 in Technical Support
When I export a grid to a Surfer v.6 grid format, it appears that grid values that are "blanked" (that is, logically null) are exported as zero. Is this correct? Golden Software normally assigns a very large value to such points (specifically, 0x7EFFFFEE). Perhaps GM is treating the points as 0 for display purposes, but storing them properly. Is this correct?

Thanks,

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  • global_mapper
    global_mapper Administrator
    edited February 2008
    The Surfer 6 export should be using the value 1.70141e38F for all missing data values when exported. If you are getting a value of 0 when you load the file back into Global Mapper this would indicate to me that the original file that was exported must have had valid elevation values of 0 where yo uare seeing 0 in the output result.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com

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