Using minvtran to convert mercator projection to geographic lat lon coordinates
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Hi,
I am trying to use minvtran (<http://www.mathworks.co.uk/help/map/ref/minvtran.html>) to convert mercator projection to lat lon coordinates. Typical mercator points include:
[x y]
ans =
-3228800 6890893
-3228512 6861000
However when I use minvtran, the geographic lat lon coordinates I get out are teh same for each x and each y coordinate. The code I use is as follows...
mstruct = defaultm('mercator');
mstruct.origin = [38.89 -77.04 0];
mstruct = defaultm(mstruct);
[lat,lon] = minvtran(mstruct,lat,lon);
[lat,lon]
ans =
-51.1100 -77.0400
-51.1100 -77.0400
Please help in allowing me to understand why I get the same lat coordinate of -51.1100 and the same lon coordinate of -77.04 when the input mercator points are different.
Thank you
Danny
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