Changing Length with Python

[Dayiz]

Hello everyone,

I've been trying to edit walls with the Archicad Python Wrapper and i had success changing the 'General_Height'and 'General_Thickness' of a wall, but 'General_Length' appears to be a read-only property.

It appears as 'General_Width' is tied to 'General_Thickness' and is not the right parameter.

In my example projects the 'General_3DLength' corresponds to the actual length of the wall, but the property is read-only.

My question is: Is it possible to change the length of a wall or am i limited to Height and Thickness?

My Code (excuse my variable names):

from Archicad import ACConnection

conn = ACConnection.connect()
assert conn

acc = conn.commands
act = conn.types
acu = conn.utilities

singleWall = acc.GetElementsByType("Wall")

gHoheId = acu.GetBuiltInPropertyId("General_Height")
gBreiteId = acu.GetBuiltInPropertyId("General_Width")
g3DLangeId = acu.GetBuiltInPropertyId('General_3DLength')
gDickeId = acu.GetBuiltInPropertyId("General_Thickness")


wandHoheWert = act.NormalOrUserUndefinedPropertyValue('length', 'normal', 4.0)
wandBreiteWert = act.NormalOrUserUndefinedPropertyValue('length', 'normal', 4.0)
wand3DLangeWert = act.NormalOrUserUndefinedPropertyValue('length', 'normal', 4.0)
wandDickeWert = act.NormalOrUserUndefinedPropertyValue('length', 'normal', 4.0)
nH = act.ElementPropertyValue(singleWall[0].elementId, gHoheId, wandHoheWert)
nB = act.ElementPropertyValue(singleWall[0].elementId, gBreiteId, wandBreiteWert)
n3 = act.ElementPropertyValue(singleWall[0].elementId, g3DLangeId, wand3DLangeWert)
nD = act.ElementPropertyValue(singleWall[0].elementId, gDickeId, wandDickeWert)
rH = acc.SetPropertyValuesOfElements([nH])
rB = acc.SetPropertyValuesOfElements([nB])
rD = acc.SetPropertyValuesOfElements([nD])
r3 = acc.SetPropertyValuesOfElements([n3])
print(rH)
print(rB)
print(r3)
print(rD)

Console Output:

[SuccessfulExecutionResult {'success': True}]
[FailedExecutionResult {'success': False, 'error': {'code': 6800, 'message': 'Value of property definition is read-only (property definition guid: "3799B10A-61C5-4566-BF9C-EAA9CE49196E")'}}]
[FailedExecutionResult {'success': False, 'error': {'code': 6800, 'message': 'Value of property definition is read-only (property definition guid: "BA0E29BD-A795-4A93-A33F-C2C17B46C33A")'}}]
[SuccessfulExecutionResult {'success': True}]

Dear Regards

Dayiz

[poco2013 · Accepted solution]

I believe that width and length are calculated values and can not be changed. Width refers to the set width of a composite or profile and would not make sense to change it. Length is the length of a wall as defined by its neig points Only the elements that these properties refer to can be changed through their info box(s) or the C++ API.

[Dayiz]

Thank you. I guess i will start studying C++ or find a work around 😄