Re: [OpenMap Users] World files

World file will give you UpperLeft real world coordinates (such as UTM or LonLat) and also will give you length of one pixel in X axis and also another value for Y axis. So if you get image width and height in pixels and multiply with length of pixel in X and Y values , you can get width and height in real coordinates and then you have to add these values to UPPERLEFT coordinates to get other LOWERRIGHT coordinates.

Hope this helps.
  ----- Original Message -----
  From: dhawal sheth
  To: openmap-users@bbn.com
  Sent: Wednesday, April 06, 2005 2:02 AM
  Subject: [OpenMap Users] World files

  I am reading this jpeg image which has a world file associated. Can sombody tell me how to determine the extent of the image based on the co-ordinates of the world file ?

  Thanks.

  Dhawal.

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