I try to write both percentages and absolute values like " 15 (20%) " on the cells of heatmap. I can do the percentages per class via code below. But, how can I do that for both?
h_map = sns.heatmap(pyArray_cf / np.sum(pyArray_cf, axis=1), vmin=0, vmax=1, annot=True, cmap="Blues",
ax=ax1, fmt='.2%',
mask=pyArray_cf==0,
xticklabels=x_axis_labels_1,
yticklabels=y_axis_labels_1)
Also, I would like to mask the cells with 0 values (0 times confusion).
Thanks to some of the points mentioned in the comments by Trenton, I have built the below heatmap. Hope it is what you are looking for.
div
. The percentages are calculated by dividing each cell by the sum of the whole column. Assuming that is what you requiredata = np.random.rand(10, 12) #Random data 0 to 1
df = pd.DataFrame(data)
#Create perc to store the percentages for each column using DIV.
perc = df.copy()
cols=perc.columns.values
perc[cols]=perc[cols].div(perc[cols].sum(axis=1), axis=0).multiply(100)
#Use annot to store the text value to display in each cell. Number \n Percent % format
annot=df.round(2).astype(str) + "\n" + perc.round(1).astype(str) + "%"
#Create plot - adjust size, linewidth and provide annotation text for display
fig, ax = plt.subplots(figsize=(10,8))
sns.heatmap(data, annot=annot, fmt='', vmin=0, vmax=1, cmap="Blues",
annot_kws={"fontsize":8}, linewidth=1, ax=ax)
Plot
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