omicverse.pl.venn

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omicverse.pl.venn#

omicverse.pl.venn(sets={}, out='./', palette='bgrc', ax=False, ext='png', dpi=300, fontsize=None, bbox_to_anchor=(0.5, 0.99), nc=2, cs=4, figsize=(4, 4))[source]#

Create a Venn diagram to visualize set overlaps.

For 2 or 3 sets this draws area-proportional circles via matplotlib-venn (venn2/venn3) so the numbers sit inside clean, correctly scaled regions instead of the non-proportional ellipses of the venn package. This follows the approach of cnsplots (Farid Rashidi, BSD-3-Clause); the implementation here is independent. matplotlib-venn only supports 2 or 3 sets, so 4+ sets fall back to the venny4py backend.

Parameters:

  • sets (dict) – Dictionary mapping set names to Python sets. 2 or 3 sets use matplotlib-venn; 4 or more fall back to venny4py.

  • out (str) – Output directory for saved figure (venny4py fallback only).

  • palette (str or list) – Colors for the set circles. A string such as 'bgrc' is treated as a sequence of single-letter matplotlib colors; a list is used as-is.

  • ax (matplotlib.axes.Axes or bool) – Existing axes to draw into; if False a new figure/axes is created.

  • ext (str) – Output file extension (venny4py fallback only).

  • dpi (int) – Resolution of saved image (venny4py fallback only).

  • fontsize (float or None) – Font size for the subset counts and set names. When None it follows plt.rcParams['font.size'] so the labels match the rest of a figure rather than a hard-coded size.

  • bbox_to_anchor (tuple) – Legend anchor position (venny4py fallback only).

  • nc (int) – Number of legend columns (venny4py fallback only).

  • cs (float) – Legend font size (venny4py fallback only).

  • figsize (tuple) – Figure size used when ax is False and a new figure is created.

Returns:

The axes the diagram was drawn into (or the passed-in ax).

Return type:

matplotlib.axes.Axes or bool

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