Thank you very much. I will try it out and let you know if I have any problems.
Best regards, Nnamdi On Thu, Aug 21, 2025 at 10:12 PM 'Bocheng Zou' via ProjectChrono < [email protected]> wrote: > Hi Nnamdi, > > Sorry for the long delay. We have released the test version of PyDEME > through conda . Please try installing the PyDEME through the following > command in a NEW environment created using "conda create -n tutorial > "python<3.13" -c conda-forge". > > conda install bochengzou::pydeme -c bochengzou -c nvidia -c dlr-sc -c > conda-forge > > Let me know if you encounter any issues. > > Best, > > Bocheng Zou > On 8/6/25 19:36, 'Nnamdi Chikere' via ProjectChrono wrote: > > Thank you so much. I am looking forward to the PyDEME conda package this > week. > > Best regards, > Nnamdi > > On Monday, August 4, 2025 at 4:44:53 PM UTC-4 [email protected] wrote: > >> Hi Nnamdi, >> >> Thank you for bringing that issue to our attention. The Py-DEME's >> building pipeline is not stable on Windows at this moment. We suggest you >> try to build from source or use WSL . >> >> We will likely to bring up a conda package for PyDEME for Windows to make >> this process much easier this week. >> >> If you intend to reproduce the results that you asked Harry for in >> another email chain, >> https://groups.google.com/g/projectchrono/c/fWYnvZKkT4g >> <https://urldefense.com/v3/__https://groups.google.com/g/projectchrono/c/fWYnvZKkT4g__;!!Mak6IKo!JX-cqt87BA-368G9A9yWM_Ikk5CTcdqeDKzA6x-EDqiwC_kk3Z3V4ydc43Fqt3sN2XEpyJ-gNXaWt38SiwDJKtV3F_NFxQ$> >> , Py-DEME is not required and you can just follow the instruction in >> Harry's github. >> >> I will keep you posted on Py-DEME's Windows conda package. >> >> Best, >> >> Bocheng Zou >> On 8/4/25 19:20, 'Nnamdi Chikere' via ProjectChrono wrote: >> >> Thank you so much for your replies. >> @Bocheng, I created an environment following the steps you outlined and >> from the GitHub page to install the Py-DEME I followed these steps >> >> conda install cmake >> pip3 install DEME >> >> I got these errors. >> (chrono_test2) conda install cmake >> >> >> Channels: >> >> - conda-forge >> >> - defaults >> Platform: win-64 >> Collecting package metadata (repodata.json): done >> Solving environment: done >> >> cmake conda-forge/win-64::cmake-4.0.3-hff78f93_0 >> libuv conda-forge/win-64::libuv-1.51.0-hfd05255_1 >> >> >> Proceed ([y]/n)? y >> Downloading and Extracting Packages: >> Preparing transaction: done >> >> Verifying transaction: done >> Executing transaction: done >> >> (chrono_test2) pip3 install DEME >> Collecting DEME >> Using cached deme-2.1.2.tar.gz (6.9 MB) >> Installing build dependencies ... done >> Getting requirements to build wheel ... error >> error: subprocess-exited-with-error >> >> × Getting requirements to build wheel did not run successfully. >> │ exit code: 1 >> ╰─> [33 lines of output] >> Traceback (most recent call last): >> File >> "C:\Users\chike\anaconda3\envs\chrono_test2\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", >> line 389, in <module> >> main() >> File >> "C:\Users\chike\anaconda3\envs\chrono_test2\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", >> line 373, in main >> json_out["return_val"] = hook(**hook_input["kwargs"]) >> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >> File >> "C:\Users\chike\anaconda3\envs\chrono_test2\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", >> line 137, in get_requires_for_build_wheel >> backend = _build_backend() >> ^^^^^^^^^^^^^^^^ >> File >> "C:\Users\chike\anaconda3\envs\chrono_test2\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", >> line 70, in _build_backend >> obj = import_module(mod_path) >> ^^^^^^^^^^^^^^^^^^^^^^^ >> File >> "C:\Users\chike\anaconda3\envs\chrono_test2\Lib\importlib\__init__.py", >> line 90, in import_module >> return _bootstrap._gcd_import(name[level:], package, level) >> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >> File "<frozen importlib._bootstrap>", line 1387, in _gcd_import >> File "<frozen importlib._bootstrap>", line 1360, in _find_and_load >> File "<frozen importlib._bootstrap>", line 1310, in >> _find_and_load_unlocked >> File "<frozen importlib._bootstrap>", line 488, in >> _call_with_frames_removed >> File "<frozen importlib._bootstrap>", line 1387, in _gcd_import >> File "<frozen importlib._bootstrap>", line 1360, in _find_and_load >> File "<frozen importlib._bootstrap>", line 1331, in >> _find_and_load_unlocked >> File "<frozen importlib._bootstrap>", line 935, in _load_unlocked >> File "<frozen importlib._bootstrap_external>", line 999, in >> exec_module >> File "<frozen importlib._bootstrap>", line 488, in >> _call_with_frames_removed >> File >> "C:\Users\chike\AppData\Local\Temp\pip-build-env-pw8idr9h\overlay\Lib\site-packages\setuptools\__init__.py", >> line 17, in <module> >> import setuptools.version >> File >> "C:\Users\chike\AppData\Local\Temp\pip-build-env-pw8idr9h\overlay\Lib\site-packages\setuptools\version.py", >> line 1, in <module> >> import pkg_resources >> File >> "C:\Users\chike\AppData\Local\Temp\pip-build-env-pw8idr9h\overlay\Lib\site-packages\pkg_resources\__init__.py", >> line 2163, in <module> >> register_finder(pkgutil.ImpImporter, find_on_path) >> ^^^^^^^^^^^^^^^^^^^ >> AttributeError: module 'pkgutil' has no attribute 'ImpImporter'. >> Did you mean: 'zipimporter'? >> [end of output] >> >> note: This error originates from a subprocess, and is likely not a >> problem with pip. >> error: subprocess-exited-with-error >> >> × Getting requirements to build wheel did not run successfully. >> │ exit code: 1 >> ╰─> See above for output. >> >> note: This error originates from a subprocess, and is likely not a >> problem with pip. >> >> >> Are there separate steps for installing on Windows? >> >> >> Best regards, >> Nnamdi >> On Monday, August 4, 2025 at 2:45:09 PM UTC-4 [email protected] wrote: >> >>> Hi Dan and Nnamdi, >>> >>> To add up, since the FSI and VSG support is not yet merged into the main >>> branch, if you want to use the PyChrono with FSI / VSG to simulate granular >>> terrain in addition to DEME, you need to use our special FSI version rather >>> than the regular version I posted in previous email. The special FSI >>> version can be installed via the following command in a NEW environment: >>> >>> conda create -n chrono_test "python<3.13" -c conda-forge >>> conda install bochengzou::pychrono -c bochengzou -c nvidia -c dlr-sc -c >>> conda-forge >>> >>> Best, >>> >>> Bocheng >>> >>> >>> On 8/4/25 18:24, 'Dan Negrut' via ProjectChrono wrote: >>> >>> That functionality for running granular problems from python: see >>> pyDEME, https://github.com/projectchrono/DEM-Engine >>> <https://urldefense.com/v3/__https://github.com/projectchrono/DEM-Engine__;!!Mak6IKo!PkKSZCuBiSh-FgdG1GZVwOgPEWrn62SHqzHo482EL_A5V21Isb_oAn9S5AMaFqcONBr_5uh8rK27fuyFYz0y7JL9Uuc2CA$>. >>> >>> >>> We’ll probably have one integrated way to install everything (chrono & >>> DEM support) coming up in the very near future – next three months, most >>> likely. That’ll be through conda forge, a one line command, hopefully. >>> >>> Dan >>> >>> --------------------------------------------- >>> >>> Bernard A. and Frances M. Weideman Professor >>> >>> NVIDIA CUDA Fellow >>> >>> Department of Mechanical Engineering >>> >>> Department of Computer Science >>> >>> University of Wisconsin - Madison >>> >>> 4150ME, 1513 University Avenue >>> >>> Madison, WI 53706-1572 >>> >>> 608 772 0914 <(608)%20772-0914> >>> >>> http://sbel.wisc.edu/ >>> >>> http://projectchrono.org/ >>> <https://urldefense.com/v3/__http://projectchrono.org/__;!!Mak6IKo!PkKSZCuBiSh-FgdG1GZVwOgPEWrn62SHqzHo482EL_A5V21Isb_oAn9S5AMaFqcONBr_5uh8rK27fuyFYz0y7JLqDzYZVw$> >>> >>> --------------------------------------------- >>> >>> >>> >>> *From:* 'Nnamdi Chikere' via ProjectChrono <[email protected]> >>> *Sent:* Monday, August 4, 2025 1:14 PM >>> *To:* ProjectChrono <[email protected]> >>> *Subject:* Re: [chrono] SDL2 Library Error while running PyChrono >>> >>> >>> >>> Thank you very much. Adding the "/" character resolved the issue. Does >>> this version include the capability to simulate granular systems on Windows >>> using Python? >>> >>> >>> >>> Best regards, >>> >>> Nnamdi >>> >>> On Monday, August 4, 2025 at 2:07:48 PM UTC-4 [email protected] wrote: >>> >>> Hi Nnamdi, >>> >>> Thank you for the follow up. Yes, on Apr 27, 2025, we renamed SetPlane >>> to SetReferenceFrame. The details can be found at >>> https://github.com/projectchrono/chrono/commit/59e3cb4ba24dbb258aa1543a971507a7d0bf2689 >>> <https://urldefense.com/v3/__https:/github.com/projectchrono/chrono/commit/59e3cb4ba24dbb258aa1543a971507a7d0bf2689__;!!Mak6IKo!NTQLCak0Iwl-Hfht85Jhg4qWkG-A7VWM6pEEbrx0f8_cvW7ySAQlRFoQ1N0NTjfNyeBXHkTouURQJFrnTRiy0LLg6XM$> >>> >>> 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 [email protected] 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$> >>> ) >>> >>> For the last step I installed via conda install >>> pychrono-9.0.1-py310_5372.tar.bz2 >>> >>> >>> >>> Best regards, >>> >>> Nnamdi >>> >>> On Wednesday, July 30, 2025 at 12:18:25 PM UTC-4 [email protected] wrote: >>> >>> Hi Nnamdi, >>> >>> Thank you for reaching out. I'm Bocheng and I'm a UW-Madison student >>> responsible for PyChrono distributions. Could you please clarify the >>> specific way you install the PyChrono? We currently support three ways of >>> installation on Windows. >>> >>> A. Build from scratch using cmake (ref: >>> https://api.projectchrono.org/tutorial_install_chrono.html >>> <https://urldefense.com/v3/__https:/api.projectchrono.org/tutorial_install_chrono.html__;!!Mak6IKo!MLRxot5akRpE7PKpP5V6eTs6EVAmfOwIgWN8nnv81XgdLQUax6qVtwZPINjM2zrnQxAA_GMxqAg8ScgcDXtHvahYwqyiWQ$> >>> ) >>> >>> 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 >>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "ProjectChrono" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion visit >>> https://groups.google.com/d/msgid/projectchrono/1f41206d-20f1-48dd-bd2e-73c48d2665fbn%40googlegroups.com >>> <https://urldefense.com/v3/__https:/groups.google.com/d/msgid/projectchrono/1f41206d-20f1-48dd-bd2e-73c48d2665fbn*40googlegroups.com?utm_medium=email&utm_source=footer__;JQ!!Mak6IKo!J5kXNaPEjXw_OFyqXzUyRfxbYeeLeX3B6PUJwtVXHkPAWJRTx8v6iqVLxYyv7WFxY5Kc7ZNgBvU-1EVwmWr-lIlB3LWUZw$> >>> . >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "ProjectChrono" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion visit 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