Read FE results API (Python)

[ngaspar_4]

Hello. I'm used to deal with RSA API through VBA. This time around it would be handy to do so in Python, so I'm trying to write my first script.

I've been trying to replicate some code I already had in VBA, but I ran into some errors that I don't know how to solve. Namely:

import clr
clr.AddReference("C:\\Program Files\\Autodesk\\Autodesk Robot Structural Analysis Professional 2021\\System\\Exe\\Interop.RobotOM.dll")
import RobotOM
from RobotOM import *
from System import Object
app = RobotOM.RobotApplicationClass()

FEParams = IRobotFeResultParams
FEParams.Node = 1
FEParams.Layer(IRobotFeLayerType.I_FLT_MIDDLE)
FEParams.SetDirX(IRobotObjLocalXDirDefinitionType.I_OLXDDT_CARTESIAN,1,0,0)

I get this error:

----> 2 FEParams.Node = 1
      3 FEParams.Layer(IRobotFeLayerType.I_FLT_MIDDLE)
      4 FEParams.SetDirX(IRobotObjLocalXDirDefinitionType.I_OLXDDT_CARTESIAN,1,0,0)

TypeError: invalid target

Also, if I comment that line, I also get error when trying to set the layer:

FEParams = IRobotFeResultParams
# FEParams.Node = 1
FEParams.Layer(IRobotFeLayerType.I_FLT_MIDDLE)
FEParams.SetDirX(IRobotObjLocalXDirDefinitionType.I_OLXDDT_CARTESIAN,1,0,0)

----> 3 FEParams.Layer(IRobotFeLayerType.I_FLT_MIDDLE)
      4 FEParams.SetDirX(IRobotObjLocalXDirDefinitionType.I_OLXDDT_CARTESIAN,1,0,0)

TypeError: instance property must be accessed through a class instance

I was wondering if you could give me some guidance about this example. Thanks in advance!

[Stephane.kapetanovic]

hi @ngaspar_4 

FEParams = ...

Object type is defined but object must be set. 

Best regards

[ngaspar_4]

Hello @Stephane.kapetanovic . Thank you so much for your answer.
What do you mean by setting an object? I hope I'm not asking too much, but could you complete your code snippet with an example so that I can understand?
Thanks for your help!

[Stephane.kapetanovic]

hi @ngaspar_4 

it is necessary to create a new instance (RobotFeResultParams) which allows you to access to set the properties.

Your python code (FEParams = IRobotFeResultParams) seems defines only a variable type from the interface but not a new parameterizable object. Try this way, both works !  C# or VB.

I tried your code and got the same error, the new keyword does not exist and I don't have time to test other ways.

if you still want to continue in python contact technical support.

Best regards