As you said in your hspace
question, the vertical distance between the subtitles is decreasing. The equivalent for the horizontal distance between subheadings is wspace
. The following is an example:
x = np.linspace(0, 2 * np.pi, 400) y = np.sin(x ** 2) fig, ((ax1,ax2),(ax3,ax4)) = plt.subplots(nrows=2, ncols=2) fig.tight_layout() ax1.plot(x, y) ax2.scatter(x, y) ax3.scatter(x, y) ax4.scatter(x, y) fig.subplots_adjust(wspace=0.2) plt.show()
Using the value for 1 for wspace
gives 
Using 0.2 as the value of wspace
, we get

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