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Topic ClosedProjection Of Maps
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ISElation View Drop Down
Groupie
Groupie


Joined: 07.Dec.2007
Location: United States
Using: AutoCAD Map 2011
Status: Offline
Points: 53 		Direct Link To This Post Topic: Projection Of Maps
    Posted: 07.Mar.2011 at 18:48
I am working with a drawing and I am unaware of what projection it was drawn in to begin with. I need to export shape files out into Lat Long WGS 84. A coordiante system is not assigned to the map, and I know how to do all of this. How can i figure out what projection the original map was drawn in?
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John Connor View Drop Down
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Senior Member


Joined: 01.Feb.2011
Location: United States
Using: AutoCAD 2018
Status: Offline
Points: 7175 		Direct Link To This Post Posted: 07.Mar.2011 at 19:18
Where and who did you get the drawing from?
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

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ISElation View Drop Down
Groupie
Groupie


Joined: 07.Dec.2007
Location: United States
Using: AutoCAD Map 2011
Status: Offline
Points: 53 		Direct Link To This Post Posted: 07.Mar.2011 at 20:18

It is a map from a telephone company showing where their outside plant information is at. They are one of our clients and they dont know what coordinated system the basemap was drawn to.

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John Connor View Drop Down
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Joined: 01.Feb.2011
Location: United States
Using: AutoCAD 2018
Status: Offline
Points: 7175 		Direct Link To This Post Posted: 07.Mar.2011 at 23:57
Are there any Northing and Easting coordinates on the map?

I see you are in the U.S.  What state are you in?  There must be a state plane coordinate system.  Do counties have/use a second coordinate system?

I find it very strange that your own client (the telephone company) has no clue as to what coordinate system was used to in their own drawings.  Have you spoken to someone in their engineering or rights-of-way department?


Edited by John Connor - 07.Mar.2011 at 23:58
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

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