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May 22, 2018 20:38
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function to create lower traiangle pairplots from a dataframe (tmp) and annotate it with correlation values
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import seaborn as sns | |
import pandas as pd | |
def make_lower_pairplot(tmp, plot_unit_line=True, corrs_method = 'spearman'): | |
try: | |
g = sns.pairplot(tmp) | |
except FloatingPointError as e: | |
warnings.warn(e.args) | |
return tmp | |
g.map_upper(lambda x, y, **kwargs: pl.gca().set_visible(False)); | |
if plot_unit_line: | |
g.map_lower(lambda x, y, **kwargs: pl.plot([0,1], [0,1], '--r')) | |
for i in range(g.axes.shape[0]): | |
g.axes[i, i].set_visible(False) | |
g.diag_axes[i].set_visible(False) | |
corrs = tmp.corr(method=corrs_method) | |
for i in range(g.axes.shape[0]): | |
for j in range(i): | |
ax = g.axes[i ,j] | |
ax.text(0.05, 1, "r = {:.2f}".format(corrs.iloc[i,j]), color='red', transform=ax.transAxes) |
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