Greetings for the day,
Can anyone please help me to know that IFC entities are case sensitive or not.
For example, if I use “ifcproduct” or “IfcProduct” instead of “IFCPRODUCT” in .ifc file it is right or not.
Thank you.
Best answer by jovitaatsafe
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As far as I know, this is the case (pun intended), yes :)
+11
Hi @sidhucivil5932,
Thanks for your question! I believe it is case sensitive, and the general rule seems to be camel casing, where the first letter of the word is capitalized like IfcProduct. I ran a quick test changing the casing writing out to IFC and the geometry disappears. The same output with differing casing doesn't read properly in an IFC viewer like DDS-CAD either. Here's some links to check out to read more on it:
Hi @sidhucivil5932,
Thanks for your question! I believe it is case sensitive, and the general rule seems to be camel casing, where the first letter of the word is capitalized like IfcProduct. I ran a quick test changing the casing writing out to IFC and the geometry disappears. The same output with differing casing doesn't read properly in an IFC viewer like DDS-CAD either. Here's some links to check out to read more on it:
Thank you @jovitaatsafe for your help.
I will definatly go through these links.
As far as I know, this is the case (pun intended), yes :)
Thank you @sander.
Greetings for the day,
When we create or export IFC file all the entities are in "uppercase" format.
I used IFCOPENSHELL and PYTHON to extract some of the entities from the IFC file and I got the resulting IFC file after extraction having entities in "camelcase" which is before extraction in "caps case". Why?
Also, IFC file having entities in camelcase (which I got after extraction) is not opening in viewers like SOLIBRI MODEL VIEWER and DDS-CAD.
Please help me to understand these.
Thank you.
+11
Greetings for the day,
When we create or export IFC file all the entities are in "uppercase" format.
I used IFCOPENSHELL and PYTHON to extract some of the entities from the IFC file and I got the resulting IFC file after extraction having entities in "camelcase" which is before extraction in "caps case". Why?
Also, IFC file having entities in camelcase (which I got after extraction) is not opening in viewers like SOLIBRI MODEL VIEWER and DDS-CAD.
Please help me to understand these.
Thank you.
I checked in with a colleague, and my apologies for the confusion. In your workspace in FME Workbench, it should be camelcase, but in the IFC file itself, the feature types are all uppercase.
There's a bit more information on casing from this forum here on IFC.
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