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shapefile not in lat/lon [message #86696]

Thu, 28 November 2013 07:59

natha
Messages: 482
Registered: October 2007

Senior Member

Hi gurus,

I have a set of shapefiles defining some regions but the content is not in lat/lon coordinates. I guess I should use the projection defined in the prj file but I don't exactly know how to do it.
I am hoping for some help here.

This is the content of the prj file:
PROJCS["NAD_1983_MTM_8",GEOGCS["GCS_North_American_1983",DATUM[ "D_North_American_1983", SPHEROID["GRS_1980",6378137.0,298.257222101]], PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION[ "Transverse_Mercator"], PARAMETER["False_Easting",304800.0],PARAMETER["False_Northing ",0.0], PARAMETER["Central_Meridian",-73.5],PARAMETER["Scale_Factor ",0.9999], PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

Using this information how could I get the lat/lon values of the area defined as:

xx=[314000.00,314000.00,315000.00,315000.00,314000.00]
yy=[4987000.0,4988000.0,4988000.0,4987000.0,4987000.0]

Thank you very much in advance,
nata

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[Message index]

		shapefile not in lat/lon By: natha on Thu, 28 November 2013 07:59
		Re: shapefile not in lat/lon By: David Fanning on Thu, 28 November 2013 08:22
		Re: shapefile not in lat/lon By: natha on Thu, 28 November 2013 08:26
		Re: shapefile not in lat/lon By: natha on Thu, 28 November 2013 08:50
		Re: shapefile not in lat/lon By: David Fanning on Thu, 28 November 2013 08:57
		Re: shapefile not in lat/lon By: David Fanning on Fri, 29 November 2013 08:17
		Transparent Polygon Shapes Displayed on a Map By: David Fanning on Sun, 01 December 2013 11:18

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