English

Problem: Projections in PC ARC/INFO don't line up with same projections done in ArcView

Solution or Workaround

Description

Projecting from geographic to Stateplane NAD 83 does not produce the same results as doing the same projection with Projector! in ArcView 3.x.

Cause

The PROJECT command assumes an input datum of NAD 27 where as ArcView assumes
NAD 83.

Solution

Make sure the Input PROJECT parameters include: DATUM NAD83 NADCON. For example:

input
projection geographic
units dd
DATUM NAD83 NADCON <------this line is added.
parameters
OUTPUT
PROJECTION STATE
UNITS METERS
ZONE 5526
DATUM NAD83 NADCON
PARAMETERS
END

This DATUM definition will prevent the input from defaulting to NAD 27.