chryswoods
commented
3 years ago Thanks for posting the issue. The error is because the directory that contains the metawards executable has not been added to the windows system PATH. MetaWards uses pip as its installer. As part of installation, pip will install a script into the Python binary directory called metawards. Looking at your path, I think you are running MetaWards from within a conda environment. Conda environments and pip don't always work together well, hence why it looks like the metawards script has not been properly copied into the environment. You should find that the script is in the standard Python binary directory (the same one that pip is located in, that pytest and jupyter would be in, if you have installed those). Either make sure that this directory is in your system PATH, or copy the script to your my_env_name directory, or don't run metawards in a conda environment.
For R, you should get MetaWards working in Python first. I recommend installing a simple miniconda or anaconda into its own directory (e.g. C:\Users\my_username\MetaWards_Anaconda3) and installing MetaWards directly into that directory using pip and not using a conda environment. Verify that you can then run C:\Users\my_username\MetaWards_Anaconda3\metawards from the conda-bash (sorry if the path is wrong, I am a Linux/Mac user). Once you have the Python version working, you can then start R, and tell reticulate the path to the MetaWards_Anaconda3\python executable. This will then make sure that R is using a Python that can correctly find the metawards executable script.
mlt39
Describe the bug After installation via pip, models cannot run and give "Cannot find the metawards executable" error
Steps taken
pip install metawardslurgy = mw.Disease(name="lurgy") lurgy.add("E", beta=0.0, progress=0.5) lurgy.add("I", beta=0.8, progress=0.25) lurgy.add("R") print(lurgy)
home = mw.Ward(name="home") home.set_num_players(10000) print(home)
results = mw.run(model=home, disease=lurgy)
──────────────────────────────────── ERROR ──────────────────────────────────── Cannot find the metawards executable: C:\Users\my_username\Anaconda3\envs\my_env_name\metawards ────────────────────────────────────────────────────────────