[Geowanking] Converting to MGRS

[Michal Migurski]

*gurgle* I was hoping to stick to short Python functions. Thanks for  
the pointer, maybe there's something I can salvage from there!

-mike.

On Feb 9, 2010, at 1:43 PM, George Demmy wrote:

> Hi Mike,
>
> It's essentially a table look-up. It's explained in detail in the DMA
> Tech Manual. However, there is a fairly clean C implementation for
> doing this with Geotrans -- a calculator for converting geographic
> coordinates that's pretty nifty in its own right. They also have a
> module for USNG, which is very similar.
>
> http://earth-info.nga.mil/GandG/geotrans
>
> HTH,
>
> George Demmy
>
> On Tue, Feb 9, 2010 at 9:26 PM, Michal Migurski <mike at stamen.com>  
> wrote:
>> I'm trying to understand how to convert between lat/lon, UTM, and  
>> MGRS.
>>
>> UTM is a piece of cake, but MGRS is confusing. I'm looking at the  
>> wikipedia
>> article, and I don't understand how to reliably determine the  
>> SQ_ID, "FJ" in
>> the example here:
>>        http://en.wikipedia.org/wiki/Military_grid_reference_system
>>
>> What's the process for determining those 100km square areas?
>>
>> -mike.
>>
>> ----------------------------------------------------------------
>> michal migurski- mike at stamen.com
>>                 415.558.1610
>>
>>
>>
>>
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>
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michal migurski- mike at stamen.com
                  415.558.1610