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Last Post 29 Jul 2010 02:51 PM by anon

georeference a .png file

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anon

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29 Jul 2010 02:51 PM
Hello- I am new to ENVI and IDL, and am having a hard time figuring out how to assign a projection to a .png file. The projection is in a .tfw format. Thanks- Eric

MariM

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11 Aug 2010 11:53 AM
Open the PNG, and go to File ->Edit ENVI Header ->Edit Map Info. Fill out this dialog with the information from the .tfw, such as the pixel size, upper left coordinate of the file, etc. Unfortunately, I don't believe the tfw files actually tell you the projection type so hopefully you know this information.

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