2016. 6. 8. · I find my mistake in plotting quiver on height contours and heat map. Actually in the quiver(X,y,U,V) was labelling x-axis as latitude, y as longitude corresponding to U,V are winds.While in our heat map and height contours x-axis was longitude and y was latitude. I have fixed this problem with line in my code. Annotated heatmaps. ¶. seaborn components used: set_theme (), load_dataset (), heatmap () import matplotlib.pyplot as plt import seaborn as sns sns.set_theme() # Load the example flights dataset and convert to long-form flights_long = sns.load_dataset("flights") flights = flights_long.pivot("month", "year", "passengers") # Draw a heatmap with.