For example in the following code: import numpy as np import matplotlib.pyplot as plt N = 10 x = [1,2,3,4,5,6,7,8,9,10] y = np.random.rand(N) plt.scatter(x, y) plt.show() I get the following plot as you can see, in the x axis, only the even values appear. How to force matplotlib to show all values, that is 1 2 3 4 5 6 7 8 9 10? Continue reading...