Hello Good ABD Community (or OpenBuildings....)
I'm having the need to georeference my models in the WSG 84 format, and then export them as IFC files with coordinates.
So my question is....how can I do that?
Best Regards
Hi Rafael,
Which version of ABD are you using, Update 3 or Update 4?
Best Regards,Soniya
I'm also looking for support here. Similar issue except I'd like my IFC export to inherit state plane geographic reprojections. Is this possible?
I'm using AECOSIM Building Designer V8i
version 08.11.09.866
Depends how you have set up your geo-referencing, the Bentley application version used and the available IFC version. The following may help:
V8i has a technology preview of IFC4 but I'm fairly sure we had not added georeference support at that time.
In CONNECT Edition if the model is related to the site using a 2D Helmert transform (Setting Up in the Real World – GeoReferencing Update) we will save the transform properties as follows:
IFC4 and IFC 2x3 exports both contain the IFC property: ifcSite - this contains the latitude and longitude values of the model origin once transformed .
IFC4 also contains the IFC properties: IfcMapConversion and IfcProjectedCRS - which store the Helmert Transform parameters. These may be consumed by the receiving IFC reading application to show or attach the IFC in the correct position if the receiving application has been designed to read this information.
The coordinates of the elements in the IFC will be stored at their model space values.
To export to IFC and use real-world coordinates for all model elements, the model would need to be referenced into the site at its real-world position then be exported from.
For setting out purposes it may be possible to use the Helmert parameters to calculate the coordinates of selected elements, one example of how to do this is Setting Up in the Real World – Generating real-world setting out coordinates
Marc