[Python] Produce a heatmap plot using seaborn with specific color mapping for values within...

Consider the following basic dataframe example:

min mean max
ALU -0.008 0.000 0.034
BRENT -0.017 0.000 0.023
CU -0.011 0.000 0.013
DTD_BRENT -0.011 0.000 0.019
GASOIL -0.009 0.000 0.035
GOLD -0.008 0.000 0.009
HH -0.033 -0.001 0.009
JET_CCN -0.009 0.000 0.033


I would like to produce a heatmap plot for the above dataframe using seaborn.heatplot where values ranging between -0.03 and 0.03 will have variations (depending on the value) of the green color and values outside this interval will have red color variations.

While I can generally produce the plot, I am struggling with the interval-dependent color map.

plt.figure(figsize=(12, 8))
sns.heatmap(df, cmap=sns.color_palette(['red', 'green', 'red']), center= 0, annot=True)
plt.title("Heatmap")
plt.show()

Continue reading...