Hi.
The architect we're working with sent me an e-mail where she wondered why the coordinates on our dwg-files were wrong... They had to move our plans 129mm to the left (x-direction) when they x-reffed our plans (the architect is using Autocad). I couldn't answer but promised to have a quick look.
Our model was in the right position (as we have used the coordinate grids defined by the architect). I got more and more puzzled and had to call back three times to try to find out what was wrong. Embarrasing to say the least... Convinced that our model was correct I had a look at our dwgs and bloody schmuck there was a 129 mm difference! I tested several settings in Plotmaker but still this same problem. I even made a new test model to really try to figure out what I've done wrong but with the same result. I attach an image of two dwg layout files opened in archicad both showing the difference in the x-direction. You can see the export options in the image.
The actual model file is showing the correct coordinates but since we send the layout file with stamps and all to our partners I think get really scared...
Is it friday 13th???
Please tell me I'm the most stupid Mats in Sweden and I can sleep a little better...
/Mats
This may or may not be the issue as I'd need to know more about your original ArchiCAD files:
Within ArchiCAD if you are drawing too far away from the origin errors start creeping in; I've even had corrupted 3D views (problem fixed when the whole model was placed near ArchiCAD's origin!).
It all came about because I naively placed a new building relative to a surveyors supplied point of reference that was many kilometers away.....
It is something that AutoCAD can do easily easily, and leads to problems with consultant team members using AutoCAD who like the building in its correct location...which actually isn't an unreasonable request! "Workaround" is to tell consultants you cannot use their origin point, and that they have to place your building using a grid intersection point (for example...), and then start drawing near the origin!
Comments from anyone using 9?
Within ArchiCAD if you are drawing too far away from the origin errors start creeping in; I've even had corrupted 3D views (problem fixed when the whole model was placed near ArchiCAD's origin!).
It all came about because I naively placed a new building relative to a surveyors supplied point of reference that was many kilometers away.....
It is something that AutoCAD can do easily easily, and leads to problems with consultant team members using AutoCAD who like the building in its correct location...which actually isn't an unreasonable request! "Workaround" is to tell consultants you cannot use their origin point, and that they have to place your building using a grid intersection point (for example...), and then start drawing near the origin!
Comments from anyone using 9?
AndorSzoke wrote:Thank you Andor!
Hi,
I have an idea why this is happening, please check it.
In AutoCAD there is an absolute origin but you can specify a user origin (UCS command). When a user origin is set normally you can see as if the user origin would be the only origin. So before the Architect inserts your drawing he should try to set the origin back to the absolute origine:
UCS <enter>
WORLD <enter>
ArchiCAD always imports drawings based on the absolute origin of the DWG file.
AutoCAD always places xrefs on its user origin.
I hope this helps.
Regards
The UCS is defined by the architect and we never change it (we're structural engineers). Our (somewhat odd) workflow is that the architect does his stuff and sends me dwg's which I build in 3D and add some structural information. Then we send back dwg's to the architect...
I tested fiddeling with the objects in the plotmaker layout and I found out that it is the stamp that causes the problem (see attached image). I can move ithe stamp around anywhere on my layout and I still get the difference but when I take the stamp away the difference is gone...!? Have I done something strange with the stamp...must be so??? I have to rush home for dinner right now and I will be choked with work until friday so I can't try anything till then.
Mats (a little happier)
Still looking?
