I'm trying to draw some text within the boundaries of some lines. The lines can be rotated and therefore the text also needs to be rotated.
When I add the text without rotation, it seems to have the correct placement and size. After rotation though, it does not (best explained when you take a look at the picture).
Here is what I tried:
import matplotlib.pyplot as plt import numpy as np fig, ax = plt.subplots(1) fig.set_dpi( 100 ) fig.set_size_inches( 1, 1 ) # Plot diagonal line (45 degrees) ax.plot((0, 0),(0, 10)) ax.plot((10, 10), (0, 10)) ax.plot((0, 10), (10, 10)) ax.plot((0, 10), (0, 0)) ax.plot((0,10),(1.3,1.3)) # font size 10 has 13 pixels, hence 1.3 ax.plot((3,10),(3,10)) # compute the offset of the line that is exactly 1.3 above the diagonal d = np.array([-1,1]) d = d / np.sqrt(sum(d**2)) * 1.3 u = np.array([3,3]) + d ax.plot( (u[0], 10+u[0]-u[1]), (u[1], 10 )) # set limits so that it no longer looks on screen to be 45 degrees ax.set_xlim([0, 10]) ax.set_ylim([0, 10]) # Plot text ax.text(0,0, 'In', fontsize=10 ) ax.text(4,0, 'Bbox', fontsize=10, bbox={"pad":0} ) ax.text(3,3, 'Out', fontsize=10, rotation=45, verticalalignment="bottom", \ horizontalalignment="left", rotation_mode="anchor" ) ax.text(6,6, 'Bbox', fontsize=10, rotation=45, verticalalignment="bottom", \ horizontalalignment="left", rotation_mode="anchor",bbox={"pad":0} ) plt.axis("off") plt.savefig( "test.pdf", bbox_inches="tight" ) This gives me the following output. Plot with rotated but offset text:
Note that the "Out" does not exactly fit within its two adjacent lines, as intended. Anybody an idea on how to adjust/fix this?
