AutoCAD Map 3D General Discussion

AutoCAD Map 3D General Discussion

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New Member
mladair
Posts: 1
Registered: ‎03-22-2012
Message 1 of 5 (390 Views)

Shapefiles and scaling issues

390 Views, 4 Replies
03-22-2012 04:04 PM

I'm working on a project to map or local cemetery, showing borders, sections, lots, & grave spaces.  I'm running into a situation that I just can't seem to get a handle on.

 

I have a set of shape files from our local GIS dept of the area around our cemetery.  When I examine them in QGIS, everything looks OK.  Measuring the distance between two known points returns 204 feet.

 

Now, switching to AutoCAD Map 2012, I'm running into some issues.  I've tried MAPCONNECT and MAPIMPORT with the same results...   I create a new drawing, assign the projection (MI83-SIF) and then attach / import the shape files. Units for the drawing are standard decimal.  Using the MEASUREGEOM, I measure between two points and get 204 (which is what I would expect in feet).  When I change the units to Architectural, then MEASUREGEOM returns 17'.  So, it appears that, while "204" in the shape file should be feet, AutoCAD Map is interpreting it as inches.

 

Any thoughts and how I can get the shape files imported so that I can create updates in Architectural or Engineering units?

 

Matt

*Expert Elite*
Murph
Posts: 1,947
Registered: ‎11-13-2006
Message 2 of 5 (388 Views)

Re: Shapefiles and scaling issues

03-22-2012 04:12 PM in reply to: mladair

Mapping and Civil work is always in Feet not inches. Why do you want it in Architectural units?

 

Look at INSUNITS variable.

 

Murph
Supportting the troops daily.
Valued Mentor
parkr4st
Posts: 440
Registered: ‎03-24-2004
Message 3 of 5 (376 Views)

Re: Shapefiles and scaling issues

03-23-2012 05:39 AM in reply to: Murph

and it probably wouldn't hurt to take a tape measure  and/or GPS if you have it to verify some points and make sure the whole project was laid out correctly versus the reality on the ground .

Active Member
bbrou25
Posts: 7
Registered: ‎06-25-2009
Message 4 of 5 (285 Views)

Re: Shapefiles and scaling issues

09-13-2012 07:45 AM in reply to: mladair

I'm running into the same issue expect that I already have univserity campus map that was drawn in normal AutoCAD in architectural units and I am inserting a Shape File and the units are not matching up.

 

The shape file insert is 1/12 the size of the CAD drawing due to the fact that the CAD drawing is 1 unit = 1 inch and the Shape file is 1 unit = 1 Foot.

 

And ideas to get the Shape file to insert and scale correclty would be greatly appreciated. Thanks.

Valued Mentor
parkr4st
Posts: 440
Registered: ‎03-24-2004
Message 5 of 5 (267 Views)

Re: Shapefiles and scaling issues

09-14-2012 04:05 AM in reply to: bbrou25

my guess is the shp file is correct and you need to scale the cad line dwg. use the commands murph listed. it works. first make a back up copy of your line work dwg and give it a try.  and make sure to check against the real world before yuo get to far into it.

 

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