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I'm very new to GIS.

How do I find the following info?

  1. x resolution <--the number of real world units per pixel in the X direction

  2. amount of translation <-- usually 0 or a very small number

  3. amount of rotation <-- usually 0 or a very small number

  4. negative of the y resolution <-- the negative of the number of real world units per pixel in the Y direction

  5. xMin coordinate (upper left)

  6. yMax coordinate (upper left)

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    Haven't you answered you own question. You write the appropriate size numbers into a text file and save it as tfw? You could use just about any programming language under the sun to do this more generically. – John Powell Jul 30 '16 at 6:38
  • pardon me for being unclear. I would like to know how to find those 6 things so I can write them down. where can I find them? – Sam Aug 1 '16 at 13:44
  • You mean a World File ? – Kirk Kuykendall Aug 1 '16 at 13:58
  • yes that is what I mean – Sam Aug 1 '16 at 14:22

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