24 june 2004

Second example of reprojecting a line file in arc info.

This time from UTM to lat/lon.

Say you have only the .e00 file, in UTM, but you want it in lat/lon. For this
example, say I have a file, 2001faults.e00.

1. You must be in the directory where you have the arc stuff set up.

2. describe 2001faults
   // displays a bunch of useful info about 2001faults

3. import auto 2001faults.e00 2001faults
   // imports the data set and makes some accompanying files

4. projectdefine cover 2001faults

5. You will see a prompt "project:"
   Type the following lines with a return after each...

   projection utm
   units meters
   zone 51 [for Taiwan]
   spheroid wgs84
   datum wgs84
   paramters

6. project cover 2001faults newfaults  [the 2 names must be different]

7. Project: (this prompt will show again, type the following lines then
   return)

   output
   project geographic [for lat/lon]
   units dd  [decimal degrees]
   spheroid wgs84
   datum wgs84
   parameters
   end

8. ungenerate LINE newfaults newfaults.gen [.gen for "generate"]

9. can use the gen2gmt matlab script in my directory to change to gmt format.
   (email me for it if I don't write the directory info here)

   might need to edit it to add a second > at the end (two > lines to EOF)