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Anyone have a excel spreadsheet that can covert global to a local coordinate grid? I have a calculator program for doing this but i'm losing faith in the ability of this calculator and would like an excel program as a back check.
I'm in the UK and work on 'stakeout' so if setting out anything on a grid or square prefer to convert to an appropriate local grid, makes my life alot easier when setting out alone too
Posted : June 4, 2011 1:23 pm
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> ... global to a local coordinate grid?
Assuming you're talking about grids that are parallel, do you wish to do simple rotate-scale-translate?
While it's not a spreadsheet, Copan will do that for you (and a lot more other cogo stuff), it can import/export CSV files, and it's free.
Posted : June 4, 2011 4:59 pm
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If you Google AUSLIG - Australian Land Information Group, I believe you will find a number of geodetic EXCEL programs that do quite similar things, if not exactly what you're looking for.
I think they have changed the name of their government agency, but it's still easy to find with Google.
Posted : June 6, 2011 2:16 pm
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I have one in excel that an intern wrote for me years ago. It works with transverse mercator projections only. You can define a TM though anywhere on the planet.
Posted : June 6, 2011 5:56 pm