I have a small 2d vector to display:
import matplotlib.pyplot as plt
import numpy as np
img = np.random.rand(4,10)
plt.imshow(img, cmap='Reds')
As folllow:
But now I want to mark a specific cell, in order to focus the reader on that cell. Because this is of specific interest...
Therefore something like a border of this cell would be nice:
Does someone know how to archive this with matplotlib
in a convenient way?
Put a rectangle at the position of the pixel you want to highlight.
import matplotlib.pyplot as plt
import numpy as np
def highlight_cell(x,y, ax=None, **kwargs):
rect = plt.Rectangle((x-.5, y-.5), 1,1, fill=False, **kwargs)
ax = ax or plt.gca()
ax.add_patch(rect)
return rect
img = np.random.rand(4,10)
plt.imshow(img, cmap='Reds')
highlight_cell(2,1, color="limegreen", linewidth=3)
plt.show()
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