Plotting multiple statefiles dynamically.

[jteijema]

The example for the new multiple plots code is as follows:

import matplotlib.pyplot as plt

from asreview import open_state
from asreviewcontrib.insights.plot import plot_recall

fig, ax = plt.subplots()

with open_state("tests/asreview_files/sim_van_de_schoot_2017_1.asreview") as s1:
    with open_state("tests/asreview_files/"
                    "sim_van_de_schoot_2017_logistic.asreview") as s2:
        plot_recall(ax,
                    [s1, s2],
                    legend_values=["Naive Bayes", "Logistic"],
                    legend_kwargs={'loc': 'lower center'})

fig.savefig("docs/example_multiple_lines.png")

However, how would one do this dynamically? open_state() method is returning a '_GeneratorContextManager' object, which implies that it is intended to be used as a context manager with the with statement. However, I can't dynamically open a cascading with statement, and I can't store the state for later using:

  for state_file in states:
      state = open_state(state_file)
      state_objs.append(state)

  plot_recall(ax, state_objs, **plot_kwargs)

Any advise for this implementation? I think I cannot manually manage the lifetime of the state objects and they must be used within a with block, and thus I am forced to call plot_recall separately.

[J535D165]

Interesting question. It would be easier if the state class had an open and close method similar to Python's open. We have .close(), but .open() might be useful as well.

For your application, did you try:

https://github.com/asreview/asreview-insights/blob/873c93fe6fb998d071351586f6ffc85b4518ce67/asreviewcontrib/insights/utils.py#L45-L60

[PeterLombaers]

You can copy how the entrypoint does it, indeed using _iter_states. If we actually use _iter_states in one of the examples, we should make it public though. Also, I guess the docstring of the various plot functions could be improved, to say (generator of) asreview.state.SQLiteState instead of (list of) asreview.state.SQLiteState.