Create a new Ifc file usinf an ifc and mvdxml ?

[kavehAlahdin]

Is there a sample code on how to create a new ifc file using source ifc and mvdxml file? Or can you give me hints on how can I do this. Thanks

[johltn]

Hi Kaveh,

You can use the snippet below to create a new IFC file with the entities filtered from an mvdXML file.

import ifcopenshell
from ifcopenshell.mvd import mvd

mvd_concept = mvd.open_mvd("examples/wall_extraction.mvdxml")
file = ifcopenshell.open("Duplex_A_20110505.ifc")

all_data = mvd.get_data(mvd_concept, file, spreadsheet_export=True)

non_respecting_entities = mvd.get_non_respecting_entities(file, all_data[1])
respecting_entities = mvd.get_respecting_entities(file, all_data[1])

# Create a new file
new_file = ifcopenshell.file(schema=file.schema)
proj = file.by_type("IfcProject")[0]
new_file.add(proj)

for e in respecting_entities:
    new_file.add(e)

new_file.write("new_file.ifc")