Using ArcCatalog

Defining a new projected
coordinate system
1. In the Spatial Reference
Properties dialog box, click
New and click Projected.
2. Type a name for the custom
coordinate system.
3. Click the Projection Name
dropdown arrow and click
one of the supported
projections.
4. Type the appropriate parameter
values for the projection.
5. Click the Linear Unit
dropdown arrow and click a
predefined unit of measure.
Or click in the
dropdown list, type the
appropriate meters per unit,
then type a name for your
custom units.
6. Define the projection’s datum
by selecting a predefined
geographic coordinate
system or defining a new
geographic coordinate
system. Afterwards, you can
modify the geographic
coordinate system’s parameters
if you wish.
7. Click OK.
8. Click OK in the Spatial
Reference Properties dialog
box.
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WORKING WITH SHAPEFILES 189