I am getting the following error while creating a 3D mesh what is the reason?

[zhichaoluan]

import pygimli as pg
import pygimli.meshtools as mt
from pygimli.physics import ert
from pygimli.viewer import pv

data = pg.getExampleData("ert/gallery3d.dat")
data["k"] = ert.geometricFactors(data, dim=3)
print(data)

plc = mt.createParaMeshPLC3D(data, paraDepth=12, paraMaxCellSize=1,
                             surfaceMeshQuality=34)
print(plc)
mesh = mt.createMesh(plc, quality=1.3)
print(mesh)

I am getting the following error while creating a 3D mesh what is the reason?

C:\Users\asus\.conda\envs\pg\python.exe E:/pyGIMLi/beijing96/3d1.py
03/08/23 - 16:05:42 - pyGIMLi - Data: Sensors: 126 data: 753, nonzero entries: ['a', 'b', 'k', 'm', 'n', 'rhoa', 'valid']
INFO - Looking for ert/gallery3d.dat in gimli-org/example-data/
Mesh: Nodes: 596 Cells: 0 Boundaries: 1157
'tetgen' �����ڲ����ⲿ���Ҳ���ǿ����еij���
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Traceback (most recent call last):
  File "E:\pyGIMLi\beijing96\3d1.py", line 13, in <module>
    mesh = mt.createMesh(plc, quality=1.3)
  File "C:\Users\asus\.conda\envs\pg\lib\site-packages\pygimli\meshtools\mesh.py", line 148, in createMesh
    mesh = pg.meshtools.syscallTetgen(namePLC, quality, area,
  File "C:\Users\asus\.conda\envs\pg\lib\site-packages\pygimli\meshtools\polytools.py", line 1893, in syscallTetgen
    mesh = pg.meshtools.readTetgen(filebody + '-1')
  File "C:\Users\asus\.conda\envs\pg\lib\site-packages\pygimli\meshtools\mesh.py", line 963, in readTetgen
    with open(fName + '.node', 'r') as node_in:
FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\asus\\AppData\\Local\\Temp\\tmp3sc6apj4-1.node'

[halbmy]

Seems like tetgen is not working properly, please check whether it is installed.

Please provide (as mentioned in the issue template) information on how you installed pyGIMLi and the version number.

[halbmy]

Without knowing your version, I guess you could be using pyGIMLi v1.4.0 where we missed to specify tetgen as dependency for the conda package (see also gimli-org/gimli#526). In this case, install tetgen (conda install tetgen) and try again.