Hey All,
I'm not a surveyor or experienced AutoCAD Map 3D user, but really need your assistance. I have read a lot of post on this forum and seems like I could not find the solution to the problem.
I have been working on the project where I have a data(few points from the Google Earth) and I'm trying to import to the CAD, but have no luck. All my points end up 100 feet away and all of them really close to each other(scale down). I set all the drawing units in meters, the GIS system I'm using is WORLD-MERCATOR, REF. IS wgs84, unit is meter, EPGS CODE IS 3395. when I import KLM file I'm selecting the same GIS coordination system and the same units.
Please Help!
Solved! Go to Solution.
Solved by ChicagoLooper. Go to Solution.
If you only need WGS84 ( = LL84) in Map 3D, i.e. you need coordinates that correspond to the latitude-longitude values in WGS84, it is not necessary to assign a coordinate system.
AutoCAD coordinates will be equal to the latitude-longitude values in WGS84.
But it is better to specify the LL84 code, and then more actions will be available to you. For example, you can enter latitude-longitude from the command line: 'll. It will be possible to view coordinates in several coordinate systems at once in MAPTRACKCS. You can attach rasters and dwg made in other coordinate systems. It will be possible to transform to other coordinate systems. Can export MAPEXPORT to other CSs.
The CS assignment will not mess up your dwg for any AutoCAD.
Thanks a lot!! for examplo, I recieved a project in Autocad with location in Germany but when I try to export it to .kmz it exports in another world place. How can I export that project with the correct coordinate system. I mean, is it possible to see the coordinate system properties form the dwg file?
In AutoCAD Map 3D (and Civil), the coordinate system is defined by its assignment. Otherwise, it is just a regular AutoCAD drawing in a mathematical rectangular system.
And MAPEXPORT will take the notional Germany to Antarctica or so on.
You need to find out in which coordinate system the plan/map is made and assign that CS in MAPCSASSIGN.
Then the chances will appear. 🙂
Im still trying but somehow I dont get it, maybe you please can help me a litte more?
to export as kmz, should I change those options?
here beginnt my problem, wich coordinate system shall I choose?
for the same CS from Google Earth would be the LL84?
What I want ist to see in Autocad (with world map as background) the same information (and same scale) like in Google Earth, but when I load the map in Autocad I dont get the same coordinates as in Google earth ever if I use the same CS as you explain me.
As result I get the project with another scale and another coordinates, even using the same CS.
Hi @Andres-Felipe_Gonzalez-Gil
<<...is it possible to see the coordinate system properties form the dwg file?>>
Yes. It's possible. You can enter MAPCSASSIGN on the command line. For example, if your site is in Berlin AND the original author has assigned UTM84-13N, then you'll get this after entering MAPCSASSIGN:
If the author did NOT assign a coordinate system then MAPCSASSIGN will look different. It will look like this.
If there's no assigned coordinate system assigned, you'll need to investigate. Two reasons why you need to investigate.
To make your line work geospatial, you can do this:
New Map.dwg is properly georeferenced.
Chicagolooper
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