netmap.downstream.regulon.make_global_target_similarity_plot

netmap.downstream.regulon.make_global_target_similarity_plot(gene_matrices)

Plot a heatmap of the mean pairwise Jaccard similarity across all source genes.

Averages the per-source-gene Jaccard matrices from get_sourcewise_jaccard_regulons() into a single global similarity matrix, applies hierarchical clustering to both rows and columns, then renders an annotated seaborn heatmap with the colour bar repositioned to the lower-left corner.

Parameters:

gene_matrices (dict) – Mapping of source gene name to a square Jaccard similarity pd.DataFrame as returned by get_sourcewise_jaccard_regulons(). An empty dict causes an early-exit message to be printed.

Returns:

Displays the plot via plt.show(). No value is returned.

Return type:

None