Hi Nnamdi,
Thank you for the follow up. Yes, on Apr 27, 2025, we renamed SetPlane
to SetReferenceFrame. The details can be found at
https://github.com/projectchrono/chrono/commit/59e3cb4ba24dbb258aa1543a971507a7d0bf2689
For the "Cannot open colormap data file
C:/Users/chike/Box/TurtleRobotExperiments/Sea_Turtle_Robot_AI_Powered_Simulations_Project/NnamdiFiles/mujocotest1/chrono/data../data/colormaps/jet-table-float-0512.csv"
issue, did you put a "/" character at the end of your
"chrono.SetChronoDataPath()" call? For example, you need to use
chrono.SetChronoDataPath("C:/Users/chike/Box/TurtleRobotExperiments/Sea_Turtle_Robot_AI_Powered_Simulations_Project/NnamdiFiles/mujocotest1/chrono/data/")
instead
of chrono.SetChronoDataPath("C:/Users/chike/Box/TurtleRobotExperiments/Sea_Turtle_Robot_AI_Powered_Simulations_Project/NnamdiFiles/mujocotest1/chrono/data")
Once you applied that fix, could you please update on if the window
crash issue gets resolved?
Thank you very much!
Best,
Bocheng Zou
On 8/4/25 17:58, 'Nnamdi Chikere' via ProjectChrono wrote:
Hi Bocheng,
It now works, but it broke certain parts of my code. Seems some of the
API and syntax have changed in this version. I noticed changes in the SCM
terrain = veh.SCMTerrain(sys)
# rotate plane
terrain.SetReferenceFrame(chrono.ChCoordsysd(
chrono.ChVector3d(0, scm_plane_y, 0),
chrono.QuatFromAngleX(-math.pi / 2)
))
# Previous version used:
terrain.SetPlane(chrono.ChCoordsysd(
chrono.ChVector3d(0, scm_plane_y, 0),
chrono.QuatFromAngleX(-math.pi / 2))
)
Upon updating to the new version, I am now faced with a new error when
running the deformable soil ...
Cannot open colormap data file
C:/Users/chike/Box/TurtleRobotExperiments/Sea_Turtle_Robot_AI_Powered_Simulations_Project/NnamdiFiles/mujocotest1/chrono/data../data/colormaps/jet-table-float-0512.csv
I have the data path correctly specified at the top of my code using
the chrono.SetChronoDataPath()
And upon contact with the ground, the window crashes. Do you happen to
have any fixes for this? Also, are there any other changes to the syntax?
Best regards,
Nnamdi
On Friday, August 1, 2025 at 10:17:21 PM UTC-4 bzo...@wisc.edu wrote:
Hi Nnamdi,
I hope you're doing well.
We're excited to share that we've refactored the Conda build
pipeline and released updated distributions of PyChrono with
improved cross-platform compatibility, which is likely to resolve
the issue you encountered.
To try out the latest release, please create a new environment and
run the following commands (note that the installation command on
the website is now oudated):
conda create -n chrono_test python=3.12 -c conda-forge
conda install pychrono -c projectchrono -c dlr-sc -c conda-forge
Please let us know if there are any remaining issues.
Best,
Bocheng Zou
On 7/31/25 00:48, Bocheng Zou wrote:
Hi Nnamdi,
Thank you for providing the information. The Windows conda
build for PyChrono is having know issues recently. We are
aware of that and it's expected to be fixed within the week.
If you are in urgent need of PyChrono, I suggest you build
from scratch using cmake (Method A) or use PyChrono's conda
distribution on Linux.
I will keep you posted once the issue in the Windows conda
distribution is fixed.
Best,
Bocheng Zou
On 7/31/25 00:45, 'Nnamdi Chikere' via ProjectChrono wrote:
Hello Bocheng,
Thank you for reply.
I installed PyChrono via method C. PyChrono through Conda
(ref:
https://api.projectchrono.org/pychrono_installation.html
<https://urldefense.com/v3/__https://api.projectchrono.org/pychrono_installation.html__;!!Mak6IKo!MLRxot5akRpE7PKpP5V6eTs6EVAmfOwIgWN8nnv81XgdLQUax6qVtwZPINjM2zrnQxAA_GMxqAg8ScgcDXtHvaj1guZPig$>)
For the last step I installed via conda install
pychrono-9.0.1-py310_5372.tar.bz2
Best regards,
Nnamdi
On Wednesday, July 30, 2025 at 12:18:25 PM UTC-4
bzo...@wisc.edu wrote:
Hi Nnamdi,
Thank you for reaching out. I'm Bocheng and I'm a
UW-Madison student responsible for PyChrono
distributions. Could you please clarify the specific
way you install the PyChrono? We currently support
three ways of installation on Windows.
A. Build from scratch using cmake (ref:
https://api.projectchrono.org/tutorial_install_chrono.html
<https://urldefense.com/v3/__https://api.projectchrono.org/tutorial_install_chrono.html__;!!Mak6IKo!MLRxot5akRpE7PKpP5V6eTs6EVAmfOwIgWN8nnv81XgdLQUax6qVtwZPINjM2zrnQxAA_GMxqAg8ScgcDXtHvahYwqyiWQ$>)
B. Precompiled binaries for Windows (ref:
https://projectchrono.org/download/
<https://urldefense.com/v3/__https://projectchrono.org/download/__;!!Mak6IKo!MLRxot5akRpE7PKpP5V6eTs6EVAmfOwIgWN8nnv81XgdLQUax6qVtwZPINjM2zrnQxAA_GMxqAg8ScgcDXtHvahDjDCVhA$>)
C. PyChrono through Conda (ref:
https://api.projectchrono.org/pychrono_installation.html
<https://urldefense.com/v3/__https://api.projectchrono.org/pychrono_installation.html__;!!Mak6IKo!MLRxot5akRpE7PKpP5V6eTs6EVAmfOwIgWN8nnv81XgdLQUax6qVtwZPINjM2zrnQxAA_GMxqAg8ScgcDXtHvaj1guZPig$>)
Could you please specify the way you install the
chrono? This will be helpful for us to investigate the
issue further.
Best,
Bocheng Zou
On 7/28/25 21:22, 'Nnamdi Chikere' via ProjectChrono
wrote:
Hello,
I have recently been faced with an error whenever
I try to run any Python programs in PyChrono. Has
anyone encountered this before? I use Visual
Studio Code and Pychrono 9.0.1 on a Windows PC. I
followed all the steps for installing Pychrono in
a virtual environment. I have tried uninstalling
and reinstalling, but it hasn't helped. Everything
worked fine in the same env, this error just
appeared suddenly. Please, I would like some
advice on this.
Best regards
Screenshot 2025-07-28 171544.png
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