Hello Ladies and Gentlemen, I have a 3D site survey possibly carried out using some provisional local controls. With clearly identifiable features of known global and local coordinates, is there a simpler way of re-align the site drawings in the global coordinate system without having to employ the Microstation modification tools?,
I am thinking of acs of the reference file.
Could the effect of such microstation modifications be propagated to other vertical packages like InRoads, Geopak etc?
I would very much welcome video demonstrations if it is possible.
Many thanks in advance.
Hi Cahma, if I understand what your problem is, maybe you could find out by how much the data should be moved (every movement can be brought down to one rotation and one translation) by manually moving it in a copy of the file, using the easily identifiable features you mentioned, and then using that delta in the reference dialog?
Here's a link to a wiki about assigning coordinate systems.
It explains several methods including:
Assigning A Geographic Coordinate System
Hello Gents,
Thank you very much for your contributions on this topic. The first proposal of manually using translation and rotation (possibly within reference attachment dialog box or otherwise) has been my traditional way of solving this kind of problems but I refuse to accept that this is Bentley-Microstation way of resolving such issue. The other suggestion is an interesting one and I know this only works when one wants to export drawings into google earth (Map) and vise versa but not for merging two drawing of different coordinate system.
I would like to think Bentley can extend the principle of merging drawings of different scale, orientation and of different coordinate system by simply using place marking.This way drawings are automatically scaled, orientated and translation automatically.
The response from Marco, proves to me that there is no automatic system within current microstation to solve this kind of problem and I am pretty sure this is a very common problem within the civil engineering/construction industry.
Ladies and gentlemen, untill I close this discussion I would like to entertain a few more ideas.
THanks again for your contributions.
first you need to establish from ustn if there is a datum attributed to this file the geographic tools should tell you if your survey file has a datum registered to it if mstn reports no datum assigned...
then you need to find out what the datum that the surveyors used if you can determine that from them then using the geographic tools assign that known datum to the model...
now obtain a similar area off features via any known datum via the internet....or coordinates of known features that should fit in your site survey ie psms etc...
create a new empty file assign a datum preferably a known common coordinate one not long lat but east/ northings
now ref attach your original survey and let mstn reproject it to the known active datum.. repeat with the known download ref file or circles by place points by coordinates via keyin xy= , ( where you enter the known E & N )
these then should land on top of known objects like the psms....
Lorys
Started msnt work 1990 - Retired Nov 2022 ( oh boy am I old )
But was long time user V8iss10 (8.11.09.919) dabbler CE update 16 (10.16.00.80)
MicroStation user since 1990 Melbourne Australia.click link to PM me
Answer Verified By: John M Haizel
Unknown said:The response from Marco, proves to me that there is no automatic system within current microstation to solve this kind of problem and I am pretty sure this is a very common problem within the civil engineering/construction industry.
Yes you're right and you will find such "transform and warp" tools within the Bentley vertical applications like Bentley InRoads and Bentley Map!
Regards
Frank
since 1985: GIS, CAD, Engineering (Civil) Senior Consultant : [Autodesk Civil 3D , Esri ArcGIS, VertiGIS: in previous days : Bentley MS V4 - V8i, GeoGraphics, Bentley Map V8i, InRoads, HHK Geograf, IBr DAVID] : Dev: [C, C++, .NET, Java, SQL, FORTRAN, UML][direct quote by: http://en.wikipedia.org/wiki/Helmut_Schmidt]: "Wer Kritik übel nimmt, hat etwas zu verbergen"Wer Grammatik- und/oder Rechtschreibfehler findet, der darf sie behalten :-)