fixes docstring and error statement in compare function

[The-Broken-Keyboard]

In plot_compare, the docstring and error statement says to use arviz's compare function. While the function is compatible to compare function in arviz-stats. So, fixed those docstrings and error statements. So that it doesn't create any confusion.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 73.04%. Comparing base (b5fd816) to head (a788e76).

Files with missing lines	Patch %	Lines
src/arviz_plots/plots/compare_plot.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #267   +/-   ##
=======================================
  Coverage   73.04%   73.04%           
=======================================
  Files          43       43           
  Lines        5019     5019           
=======================================
  Hits         3666     3666           
  Misses       1353     1353           

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[aloctavodia]

We are dropping support for waic. We are only going to support loo.

[aloctavodia]

This works

import arviz_base as azb
import arviz_stats as azs
import arviz_plots as azp
model_compare = azs.compare({'Centered': azb.load_arviz_data('centered_eight'),
'Non-centered': azb.load_arviz_data('non_centered_eight')})

azp.plot_compare(model_compare)

[The-Broken-Keyboard]

@aloctavodia okay got it, so we have to get data_frame from arviz-stats instead of arviz.

I got confused because it says ValueError: cmp_df must have been created using the compare function from ArviZ. When I checked arviz's compare function then saw that it returns dataframes with columns elpd_loo or elpd_waic .

[The-Broken-Keyboard]

I have updated the docstring and error statement. So that users will know that they have to use compare function from arviz-stats instead of arviz

[aloctavodia]

Thanks, eventually, legacy and new versions of arviz will converge. But in the meantime, that they both exist in parallel can be confusing, so thanks for making things clear.