Non-Square Pixels

sreynolds03sreynolds03 Global Mapper UserPosts: 1
edited September 2012 in Raster Data
When outputting from Global Mapper, we've found that when outputting in a UTM projection(usually but not always), the output tiles show metadata with non-square pixels. We are unsure what the problem is and don't remember encountering it previously when using GM.

We use several of the output options including tile creation as well as vector based tiling. We always ensure that the 'Create Square Pixels' option is selected.

Could this be an issue with my settings?

Any insight would be greatly appreciated.


Cheers,

Sean

Comments

  • global_mapperglobal_mapper Administrator Posts: 17,238
    edited September 2012
    Sean,

    Can you check the Advanced Section of the general tab of the Configuration dialog and see if you perhaps have the option checked (near the top) to prefer export bounds over the sample spacing? If this is check then your specified export bounds will be exactly obeyed, which means that your sample spacing may be slightly shrunk to make the pixels exactly fit in the bounds. Otherwise the sample spacing should be exactly obeyed (and the bounds possibly grown slightly).

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Guru
    gmsupport@bluemarblegeo.com
    http://www.globalmapper.com
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