Hi,
Two scenarios:
First:
A drawing from an old report whose only clue to a coordinate system is a
graphic scalebar. After scanning the drawing, then importing it into MI;
how can you create an approximate coordinate system (like Non-Earth) that
will allow you to make approximate measurements after you've digitized the
map features? There are no electronic versions available; no point
coordinates indicated on the map. It's large scale so no worries about
curvature of the Earth.
A second perhaps easier problem:
If you have a CAD drawing on paper which has a few points labeled with
coordinates (say State Plane). Can you just input those coordinates in the
dialog when you register the scanned image and voila, the map and all its
features have a coordinate system? (Provided of course that you're lucky
enough to have the points distributed relatively evenly) As you digitize
and save features as separate MI tables will each have some semblance of a
coordinate system? Where are the pitfalls in this scenario?
Thanks for the help,
Phil Uhl
Salt Lake City
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