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 Matplotlib : linewidth parameters
Dear community,

This subject as already been asked on the net but in my case my problem seems to be slightly different. I'm trying to draw a line using matplotlib with a specific lenght (400mm) and a specific thickness (4mm). I managed to draw a line with the desired lenght but I didn't find a way to add a specific thickness to this line. I tried to use the linewidth parameter but my result is not accurate. For now the thickness is closed to 5.38mm instead of 4mm. I'm saving my plot in a svg type in order to use inkscape to control the real length and thickness of my line.

Thanks a lot for helping me !

import matplotlib.pyplot as plt
fig1 = plt.figure(figsize=(400/25.4,400/25.4))#size in inches

ax1= plt.gca()

x = [0,400]
y = [200,200]

ax1.plot(x,y,linewidth=4*1574.8/400)#with 100dpi the figure should be 1574.8px*1574.8px

plt.subplots_adjust(left=0, right=1, top=1, bottom=0)
plt.savefig('test.svg', bbox_inches='tight', pad_inches=0, dpi='figure')

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