How to plot a heatmap using plt.imshow() from pandas dataset X and Y co-ordinates?

Question

I want to plot a heatmap using XY co-ordinates I have attached below. ( I have them in a CSV file originally). I am unable to combine the two data frame columns into a valid shape for Image. plt.imshow(Z) takes only one argument for image data and I am unable to combine two columns into one. So, how to plot a heatmap using plt.imshow() in python?

X,Y coordinates here

Answer 1

Let's try with np.histogram2d :

hist, xe, ye = np.histogram2d(df['X'], df['Y'])
plt.imshow(hist, origin='lower')

Output (you will need to relabel the ticks)