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How to change axis weight in matplotlib (make the axis much bolder)?

from pylab import *    
x = [5,7,5,9,11,14]
y = [4,5,3,11,15,14]
scatter(x, y, s=50, color='green',marker='h')
show()
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  • 1
    Do you want something like axhline(linewidth=5, color='black') ? Commented Nov 13, 2013 at 8:48
  • yes, similiar to that which can make all the axis much bolder @falsetru Commented Nov 13, 2013 at 8:51

2 Answers 2

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You can set the width of whats called a spine (a side of the axes) in Matplotlib:

fig, ax = plt.subplots()

ax.plot(np.random.randn(100).cumsum())

# The spines
plt.setp(ax.spines.values(), linewidth=3)

# The ticks
ax.xaxis.set_tick_params(width=3)
ax.yaxis.set_tick_params(width=3)

enter image description here

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1 Comment

great! @Rutger Kassies can you explain your code at least slightly
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Use axhline, axvline:

axhline(linewidth=5, color='black')
axvline(linewidth=5, color='black')
axhline(linewidth=5, y=max(y)*1.1, color='black')
axvline(linewidth=5, x=max(x)*1.1, color='black')

enter image description here

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5 Comments

thanks @falsetru it changes only two sides, i want to change all the four sides , and also the tick marks
not exactly, still one side is remaining and the right most side does not merge with original one.@falsetru
@tester2, Sorry, I don't understand what you mean.
your code is not perfect since it can not make all the four sides bolder @ falsetru
@tester2, I added a result as a image. What do you mean for all the four sides?

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