I'm not sure, but I somehow remember something about some script that did the caluclation.
Never run it so far, however.
And I don't remember the name.

Would be cool if such a function would be integrated in therion itself and printed to the log... (maybe do both: just use LRUD data and another run by using the volumes calculated from the lox compiler)


Am 2022-01-27 15:21, schrieb Bill Gee:
Hi Enrico -

Just to see what this method would produce, I installed both Paraview
and MeshLab on my Fedora 35 system.  I opened a .lox file of the cave
in Loch (which displays a 3d rendering of the cave) and then exported
it to a .vtk file.  I opened the .vtk file in Paraview.  It shows
nothing.  I cannot find the export function.  The Save data feature
does not offer x3d as a file type.

In Paraview the Information tab says there are zero cells, zero points
and zero memory used.  The x-, y- and z-range are "not available".

The .vtk file exists and is about 16k bytes (it is a small cave).

Am I missing something?

========
Bill Gee


On Thursday, January 27, 2022 7:52:57 AM CST Enrico Fratnik wrote:
Hi Bill,

normally I export the VTK model of the cave from LOCH then I open it
with ParaView
With ParaView I export the model in x3d format and I open it with MeshLab
where I use the filter "Surface Reconstruction: Screened Poisson" with
pre-clean option active
After that with the filter "Compute Geometric Measures" you can retrieve
the volume on the log view.

My big issue is which model is better to export with therion in order to obtain an acceptable volume: the one with "-wall-source splays" or with
"-wall-source maps"?

Hope this helps

good caves to everyone

enrico

On Thu, Jan 27, 2022 at 1:37 PM Bill Gee <[email protected]> wrote:

> Hello everyone -
>
> Several years ago I made a map of a small cave.  Among the data that was
> calculated was an estimation of the volume of the cave.  I need to find
> that information again, but it has so far eluded me.  I thought it was in
> therion.log along with other statistics like length and bounding box
> dimensions, but now I do not find it there.  The estimation was based on
> solids calculated from centerline and LRUD data.
>
> I looked in thTMPDIR and found nothing useful.  I also checked to see if
> it comes from Aven or Loch.  Nothing there.  I looked through a KML file
> and found nothing.
>
> Can any of you point me in the right direction?  Believe it or not, I need
> to testify in court early next week about this.  It's a long story ...
>
> Thanks!
> ========
> Bill Gee
>
>
>
>
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