conditional face/vertex selection not working

[rhit-jiaoq]

ms.apply_filter('compute_selection_by_condition_per_face', condselect=cond)
pymeshlab.pmeshlab.PyMeshLabException: Failed to apply filter: compute_selection_by_condition_per_face
Filter does not exists. Take a look at MeshSet.print_filter_list function.

Is it removed?

[alemuntoni]

Nope, the filter still exists. I don't know why it is not available in your installation.

[rhit-jiaoq]

I installed via the .whl file under actions tab. It seems like only the newest two versions are available, but the problem exists in both. Some .dll are missing when I import pymeshlab. The program compiles normally, but could it possibly cause the problem? I am pasting the error info here

import pymeshlab
Warning:
Unable to load the following plugins:

    filter_func.dll: filter_func.dll does not seem to be a Qt Plugin.

Cannot load library C:\Users\jiaoq\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\pymeshlab\lib\plugins\filter_func.dll: The specified module could not be found.
filter_mesh_booleans.dll: filter_mesh_booleans.dll does not seem to be a Qt Plugin.

Cannot load library C:\Users\jiaoq\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\pymeshlab\lib\plugins\filter_mesh_booleans.dll: The specified module could not be found.
filter_sketchfab.dll: filter_sketchfab.dll does not seem to be a Qt Plugin.

Cannot load library C:\Users\jiaoq\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\pymeshlab\lib\plugins\filter_sketchfab.dll: The specified module could not be found.
io_3ds.dll: io_3ds.dll does not seem to be a Qt Plugin.

Cannot load library C:\Users\jiaoq\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\pymeshlab\lib\plugins\io_3ds.dll: The specified module could not be found.
io_e57.dll: io_e57.dll does not seem to be a Qt Plugin.

Cannot load library C:\Users\jiaoq\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\pymeshlab\lib\plugins\io_e57.dll: The specified module could not be found.
io_u3d.dll: io_u3d.dll does not seem to be a Qt Plugin.

Cannot load library C:\Users\jiaoq\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\pymeshlab\lib\plugins\io_u3d.dll: The specified module could not be found.

Can you double check or maybe send me some older version of pymeshlab?

[alemuntoni]

Which whl are you downloading? The one from the main or from the devel branch?
Anyway, I think something is going wrong in your system, in our tests all the plugins are correctly loaded in a clean environment.
Could you please try to install the package from pip and see if the same errors appear?

[rhit-jiaoq]

I installed via pip but the same problem occurs. I managed to download the 2021.10 release for 3.9 and that one has conditional face selection. Guess I will use that one. Thank you.

[jmespadero]

I have just tested this. Everything seems ok starting from a fresh linux machine.

python3 -m venv pm
source pm/bin/activate
pip3 install pymeshlab

Output from installation

Collecting pymeshlab
  Using cached pymeshlab-2022.2.post4-cp310-cp310-manylinux_2_31_x86_64.whl (64.9 MB)
Collecting numpy
  Downloading numpy-1.25.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (17.6 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 17.6/17.6 MB 1.9 MB/s eta 0:00:00
Installing collected packages: numpy, pymeshlab
Successfully installed numpy-1.25.1 pymeshlab-2022.2.post4

Command to test compute_selection_by_condition_per_face filter (Both errors are expected)

>>> import pymeshlab as ml
>>> ms = ml.MeshSet()
>>> ms.apply_filter('compute_selection_by_condition_per_face', condselect="1")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
pymeshlab.pmeshlab.PyMeshLabException: compute_selection_by_condition_per_face requires at least one mesh loaded in the MeshSet.
>>> ms.compute_selection_by_condition_per_face(condselect="1")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/jespa/proyectos/pm/lib/python3.10/site-packages/pymeshlab/__init__.py", line 41, in foo
    res_dict = self.apply_filter(name, **kwargs)
pymeshlab.pmeshlab.PyMeshLabException: compute_selection_by_condition_per_face requires at least one mesh loaded in the MeshSet.