Compare the plots created by two versions of pyflexplot.
- Install two versions of pyflexplot (e.g., latest tag and head of dev branch) from github into designated virtual environments.
- Create the same plots with both versions, provided presets and input files.
- Compare the plots between the two versions.
- For plots that differ, create a diff image that highlights the differences.
There are dfferent ways how to install the project.
pipx install git+ssh://[email protected]/MeteoSwiss-APN/pyflexplot-testgit clone git+ssh://[email protected]/MeteoSwiss-APN/pyflexplot-test
cd pyflexplot-test
venv_dir=~/local/venvs/pyflexplot-test
make install VENV_DIR=${venv_dir} CHAIN=1
${venv_dir}/bin/pyflexplot-test --helpvenv_dir=~/local/venvs/pyflexplot-test
python -m venv ${venv_dir}
${venv}/bin/python -m pip install git+ssh://[email protected]/MeteoSwiss-APN/pyflexplot-test
${venv_dir}/bin/pyflexplot-test --help$ pyflexplot-test -V
0.4.5
$ pyflexplot-test -h
Usage: pyflexplot-test [OPTIONS]
Options:
--data PATH path to data directory; defaults to data;
overridden by --old-data and --new-data;
ignored if --infile and/or --infiles-old-new
are passed
--infile PATH input file path overriding the input file
specified in the preset; incompatible with
--infiles-old-new; may be omitted, passed
once (in which case the same infile is used
for all presets), passed the same number of
times as --preset/--presets-old-new (in
which case the infiles and presets are
paired in order) or passed an arbitrary
number of times if --preset/--presets-old-
new is not passed more than once (in which
case the same preset is used for all
infiles)
--infiles-old-new PATH... pair of input file paths overriding the
input file specified in the old and new
preset, respectively; may be repeated (see
--infile for details); equivalent to but
incompatible with --infile
--install-dir PATH install directory in which git clones and
their venvs are saved
--new-data PATH path to data directory for --old-rev;
overrides or defaults to --data; ignored if
--infile and/or --infiles-old-new are passed
--new-rev TEXT new revision of pyflexplot; defaults to
'dev' (head of development branch); may be
anything that git can check out (tag name,
branch name, commit hash
--num-procs INTEGER number of parallel processes during plotting
--old-data PATH path to data directory for --new-rev;
overrides or defaults to --data; ignored if
--infile and/or --infiles-old-new are passed
--presets-old-new TEXT... pair of presets used to create old and new
plots, respectively; may be repeated (see
--preset for details); equivalent to but
incompatible with --preset
--old-rev TEXT old revision of pyflexplot; defaults to
lanew tag; may be anything that git can
check out (tag name, branch name, commit
hash)
--only INTEGER restrict the number of plots per preset
--preset TEXT preset used to create plots; may be
repeated; equivalent to but incompatible
with --presets-old-new; may be omitted,
passed once (in which case the same preset
is used for all infiles), passed the same
number of times as --infile/--infiles-old-
new (in which case the presets and infiles
are paired in order) or passed an arbitrary
number of times if --infile/--infiles-old-
new is not passed more than once (in which
case the same infile is used for all
presets)
--repo TEXT pyflexplot repository URL
--reuse-installs / --reinstall reuse venvs of existing repo clones instead
of reinstalling them; overriddenby --reuse-(
old|new)-install/--reinstall-(old|new)
--reuse-new-install / --reinstall-new
reuse venv of existing clones of new repo
instead of reinstalling it; overrides
--reuse-installs/--reinstall for new repo
--reuse-old-install / --reinstall-old
reuse venv of existing clones of old repo
instead of reinstalling it; overrides
--reuse-installs/--reinstall for old repo
--reuse-new-plots / --replot-new
reuse existing new plots rather than
recomputing them; overrides --reuse-
plots/--replot for new plots
--reuse-old-plots / --replot-old
reuse existing old plots rather than
recomputing them; overrides --reuse-
plots/--replot for old plots
--reuse-plots / --replot reuse existing plots rather than recomputing
them; overridden by
--reuse-(old|new)-plots/--replot-(old|new)
-v increase verbosity
-V, --version Show the version and exit.
--work-dir PATH working directory in which plots and diffs
are saved in subdirectories; may be passed
repeatedly, specifically once for every
--preset/--presets-old-new in order to
prevent plots based on the same prefix but
different input files from overwriting each
other
-h, --help Show this message and exit.
Compare the head of the development branch against the latest tag:
data="/scratch-shared/meteoswiss/scratch/ruestefa/shared/test/pyflexplot/data"
pyflexplot-test -v --num-procs=6 --data-path="${data}"This will create two separate installs of pyflexplot in ./pyflexplot-test/install/ and run each three times, once for each specified preset.
Then the plots created by the two versions in ./pyflexplot-test/work/ will be compared, and for those that are not identical, diff images will be produced in pyflexplot-test/work/v0.13.11_vs_dev/, on which the differences are highlighted.
The default preset is --preset=opr/*/all_png.
The default infiles in the presets are specified relative to a ./data/ directory.
If this directory is not present, the path to it must be supplied with --data-path.
Multiple presets can be compared in one run, and for each, a separate input file can be specified, which override the defaults specified in the preset setup files.
pyflexplot-test --num-procs=6 \
--old-rev=v0.13.11 --new-rev=v0.14.0-pre \
--preset=opr/cosmo-1e-ctrl/all_png --infile=data/cosmo-1e-ctrl/grid_conc_0924_20200301000000.nc \
--preset=opr/ifs-hres-eu/all_png --infile=data/ifs-hres-eu/grid_conc_0998_20200818000000_goesgen_2spec.nc \
--preset=opr/ifs-hres/all_png --infile=data/ifs-hres/grid_conc_1000_20200818000000_bushehr_2spec.ncNotes:
- A separate input file is specified for each preset. The matching only depends on the respective order of the
--presetand--infileflags among themselves; passing first all--presetflags and then all--infileflags or any other combination would yield the same result. - If only one input file is specified, it is applied to all presets. This of course only works, if all presets apply to the same model (which is not the case in this example).
- If v0.13.11 is the current latest tag,
--new-refcan be omitted. - Parallelization (
--num-procs) only applies to the individual pyflexplot runs. Pyflexplot-test itself always runs sequentially, i.e., one pyflexplot run after the other, only the runs themselves may be parallelized.
If the same preset is repeated for different input files, chances are some plots will be overwritten. To avoid this, a separate work directory can be specified for each.
data="/scratch-shared/meteoswiss/scratch/ruestefa/shared/test/pyflexplot/data"
file1="${data}/cosmo-1e-ctrl/grid_conc_xxxx_20200619030000_BEZ.nc"
file2="${data}/cosmo-1e-ctrl/grid_conc_xxxx_20200619030000_BUG.nc"
file3="${data}/cosmo-1e-ctrl/grid_conc_xxxx_20200619030000_FES.nc"
pyflexplot-test \
--reuse-installs \
--work-dir=test/work/cosmo-1e-ctrl/BEZ --preset=opr/cosmo-1e-ctrl/all_png --infile="${file1}" \
--work-dir=test/work/cosmo-1e-ctrl/BUG --preset=opr/cosmo-1e-ctrl/all_png --infile="${file2}" \
--work-dir=test/work/cosmo-1e-ctrl/FES --preset=opr/cosmo-1e-ctrl/all_png --infile="${file3}"Notes:
-
If pyflexplot-test has previously been run with the same versions (and those have not changed),
--reuse-installswill reuse existing installations instead of reinstalling pyflexplot, which saves time. -
If there have been changes to the new version (
--new-rev), but the old reference version (--old-rev) is still the same, only the latter is reused with--reuse-old-install, while the former is reinstalled (thanks to an implied--reinstall-old). -
Reinstallation only works if the install directory (
--install-dir) stays the same (e.g., the default./pyflexplot-test/install/). -
Likewise, existing plots may be reused with
--reuse-plotsetc., for instance to only recreate the diff plots. Like for installs, this requires the same work directory (--work-dir). -
By taking advantage of some bash notation tricks and the fact that only the raltive order of the same flags matters, the command can be shortened as follows:
pyflexplot-test \ --work-dir=test/work/cosmo-1e-ctrl/{BEZ,BUG,FES} \ --preset=opr/cosmo-1e-ctrl/all_png{,,} \ --infile="${file1}" --infile="${file2}" --infile="${file3}"
This project was created with Cookiecutter and the MeteoSwiss-APN/mch-python-blueprint project template.