hemisphere with hollow bottom

This depends a bit on what you're after.

Put the above code into a my_script.py file, and add a last line `Draw(geo)`. By running a terminal in the location where you saved the script, you can run this with the gui by calling `netgen my_script.py`, and then continue in the gui.

Alternatively, you can do everything in the python script (see docu.ngsolve.org/latest/i-tutorials/inde...-and-mesh-generation ) and then run `python3 my_script.py`.

Dear sir.

Thanks a million for your reply.
I seriously appreciated it.

Dear sir,
When i load the python file, i get the error as this:

AttributeError: 'netgen.libngpy._csg.Solid' object has no attribute 'faces'
Finished executing C:/Users/suzarina sukri/Downloads/hemisphere.py

what does it means? sorry to bother you again sir

Hi,
it appears that there is some mix-up between the occ wrapper code and the i-tutorial code, which use the netgen.csg Shpere object. Could you please post you example file?

Do you mean this code?

from netgen.occ import *

face = Sphere((0,0,0),1).faces[0]
face *= HalfSpace((0,0,0),(0,0,1))

geo = OCCGeometry(face)
Draw(geo)

Thank you so much sir

sorry sir, this is the code

from netgen.occ import *
from netgen.csg import *
from ngsolve.webgui import Draw


face = Sphere((0,0,0),1).faces[0]
face *= HalfSpace((0,0,0),(0,0,1))

geo = OCCGeometry(face)
Draw(geo)