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Exporting to vtp
Posted: Fri Oct 01, 2021 8:25 am
by xavixavieri
Hi all,
I've recently ran my first simvascular code in MSI using SvSolver, and it returns the restart files
.
Right now, i need to download and convert the restart files into .vtp files in simvascular GUI. I wonder if there is a fast way to do it, maybe defining the conversion in the .inp file?
Thank you.
Regards,
Hadi
Re: Exporting to vtp
Posted: Fri Oct 01, 2021 10:39 am
by davep
Hello Hadi,
The svSolver software has a program called
svpost that is used to convert restart files to vtk files. Running
svpost -h gives you its command-line options. I typically run it from a shell script like this
Code: Select all
svpost=/usr/local/sv/svsolver/2019-01-19/bin/svpost
indir=4-procs_case
outdir=export
start=100
stop=500
inc=100
$svpost -all \
-indir ${indir} \
-outdir ${outdir} \
-start ${start} \
-stop ${stop} \
-incr ${inc} \
-vtp all_results \
-vtu all_results
does not compute average values at inlets and outlets files though.
Cheers,
Dave
Re: Exporting to vtp
Posted: Mon Oct 04, 2021 12:01 pm
by xavixavieri
Hi Dave,
Thank you for the reply, it would definitely speed up the post proc. I saw that there is a similar command in SvFSI solver.inp file:
Save results to VTK format: 1
Name prefix of saved VTK files: result
Increment in saving VTK files: 10
Start saving after time step: 1
I wonder why it is not implemented in svSolver, just curious.
Regards,
Hadi
Re: Exporting to vtp
Posted: Mon Oct 04, 2021 2:38 pm
by davep
Hello Hadi,
The svSolver code has been around for a long time, before VTK, so the VTK conversion was added much later.
Cheers,
Dave
Re: Exporting to vtp
Posted: Sat Jun 11, 2022 8:27 pm
by kmandar
davep wrote: ↑Fri Oct 01, 2021 10:39 am
svpost does not compute average values at inlets and outlets files though.
Hello,
I was able to use svpost successfully to create vtp, vtu and restart files.
Is there a separate script to calculate averages?
Thanks,
Mandar
Re: Exporting to vtp
Posted: Mon Jun 13, 2022 1:03 pm
by davep
Hi Mandar,
You can create the flow files using the SV GUI, need to move the restart files to your local computer.
I also wrote a C++ program to create these files. See
https://github.com/ktbolt/cardiovascula ... flow-files.
Cheers,
Dave
Re: Exporting to vtp
Posted: Mon Jun 13, 2022 1:14 pm
by kmandar
Hi Dave,
This is exactly what I was looking for.. I will give it a try and get back to you.
Thanks much!!
Mandar
Re: Exporting to vtp
Posted: Mon Jun 13, 2022 3:55 pm
by kmandar
The C++ program works as intended and all_results-flow.txt, all_results-pressure.txt values match exactly with what the SV GUI outputs.
Also, just to report the success of using svpost, here is how I used svpost to output the vtp, vtu and restart files:
Code: Select all
svpost -all -start 0 -stop 100 -incr 50 -ph -laststep -vtu all_results.vtu -vtp all_results.vtp -vtkcombo -indir 16-procs_case -outdir converted-results
and I get the these output files:
restart.100.0 (because I had the options -ph -laststep),
all_results.vtu (because I had the options -vtu all_results.vtu, followed by -vtkcombo)
all_results.vtp (because I had the options -vtp all_results.vtp, followed by -vtkcombo)
On svpost -h, I saw these options
Code: Select all
-nonbinary : Read/Write files in ASCII format
-vis file_prefix : Write Vis-format results file
-vismesh filename : Write Vis-format mesh file
What does the nonbinary option do and what is the Vis-format?
Thanks,
Mandar
Re: Exporting to vtp
Posted: Tue Jun 14, 2022 12:31 pm
by davep
Hi Mandar,
It appears that the
-nonbinary option can only be used to read results that have been saved as ascii files. It does not seem to be used to write VTP files in ascii as I thought it would, caused svpost to fail.
The
-vis flag is used to write results in an ascii format that was used by a now ancient visualization program. For example
Code: Select all
region "fluid_region"
time step 1
time 1.0
analysis results "pressure"
number of data 8595
type "nodal"
order "scalar"
length 1
data
-2.870094639730830e+00
3.259296010619859e+00
7.400246868472002e+00
1.658926949158073e+01
.
.
.
analysis results "velocity"
number of data 8595
type "nodal"
order "vector"
number of components 3
components
"x"
"y"
"z"
end components
length 3
data
0.000000000000000e+00 0.000000000000000e+00 0.000000000000000e+00
0.000000000000000e+00 0.000000000000000e+00 0.000000000000000e+00
0.000000000000000e+00 0.000000000000000e+00 0.000000000000000e+00
0.000000000000000e+00 0.000000000000000e+00 0.000000000000000e+00
.
.
.
Cheers,
Dave
Re: Exporting to vtp
Posted: Thu Jun 16, 2022 11:05 am
by kmandar
That explains it, thanks!
Mandar