State Plane Coordinate System for Imagery

State Plane Coordinate System for Imagery

You can now use SPCS data sets (imagery and SPCS DEMs) with the following limitations:

Shape files can be converted to lat/long from the data manipulation form.
Imagery with a world file, and NAD83 SPCS.
The SPCS coordinates are currently not saved, so you have to correctly set them when you open the data (every time).
To avoid having the enter the projection information every time you open the data, you can put a "SPCS.TXT" file in the directory with the data.
You cannot save the imagery as a Geotiff.
SPCS definition files.

When you import an image with a world file, you will get this form. Normally you would just confirm the datum and UTM zone.

Select the SPCS button to use SPCS coordinates.

If this form does not appear when loading an image, one of two things happened:

You do not have a world file with you image, and it uses another form of imagery.
You already opened the data as UTM, and the program remembers that. In that case you must delete the datum file (*.TDW, *.JDW, and so on) and correctly tell the program about the projection.

The text below the SPCS button shows the zone name and the units selected.

If SPCS is selected, all other options will have no effect.

Last revision 10/7/2007