Geometry loss while translating IDF file to OpenStudio?

asked 2014-12-22 03:35:44 -0600

Waseem

flag of United Kingdom of Great Britain and Northern Ireland

2532 ●4 ●19

updated 2015-01-09 12:09:40 -0600

Neal Kruis

4735 ●10 ●17 http://bigladdersoftware.com/

Hi All, I create my geometry in DesignBuilder and it looks file in the visualization tab. However, just to make sure that every surface is properly matched, I export IDF and then imprt IDF in openstudio. While doing this it appears that the geometry is changed a bit. Does this happen inside openstudio while translating IDF to .osm format?

In the OpenStudio model, there is loss of one surface while it is clearly visible in the DesignBuilder model (please see below images). Any comments/suggestions?

Openstudio model DesignBuilder model .

Thanks

Kindest Regards

Waseem

answered 2014-12-22 11:37:09 -0600

macumber

11968 ●22 ●21 http://automaticmagic.com/

Hi @Waseem, it is most likely that this surface is being altered by SketchUp when you open the file in the SketchUp plug-in. When you open the file do you see any messages about surfaces that can't be drawn? Try opening the Ruby console in SketchUp before importing the IDF and see if any messages show up there.

Dan

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Hi @macumber (Dan), I was thinking that Sketchup Plugin was causing this but was not sure. I get some of the following messages in the Ruby console, Any ideas what are they?

Space.cleanup_entity: unhandled swap for #<sketchup::face:0x1d484a08>

Space.cleanup_entity: duplicate drawing interface for #<sketchup::face:0x1d484a08>, #<sketchup::face:0x1ce8d390>

Also, I get following warnings when I import IDF in Sketchup Plugin;

Removed duplicate drawing interface for object Block19:Zone1Partition4010058 Potential duplicate of object Surface 2 and some warnings about window frame.

Waseem ( 2014-12-22 13:31:15 -0600 )edit

Yeah, SketchUp sometimes changes the faces in ways that are difficult to track. It might be that this surface is still in your OpenStudio model but just is not displayed in SketchUp. You can export a DXF file from E+ to verify that the surface is actually in your model.

macumber ( 2014-12-22 14:49:25 -0600 )edit

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Geometry loss while translating IDF file to OpenStudio?