CODEWITHSUNDEEP
pythonmatplotlib
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Reputation: 4764

Pass value in the text of plt.text function

Here is the abstracted problem, every time lst is different, so I want to do it automatically

import matplotlib.pyplot as plt
import numpy as np
fig=plt.figure()
fig.set_size_inches(8,4)
lst=np.array ([0.1235,0.2322,0.3300]) 
#how can I directly pass these value to plt.text, without manually input
plt.text(0.05,0.6,r'a=0.124,  b=0.232,  c=0.330',fontsize=18)
plt.show()

Upvotes: 0

Views: 5270

Answers (1)

Anand S Kumar
Anand S Kumar

Reputation: 90879

You can use str.format() and pass in the list as the parameter to it (and use indexes inside {} to determine where and with what format a element goes , Example -

plt.text(0.05,0.6,r'a={0:.3f}, b={1:.3f}, c={2:.3f}'.format(*lst),fontsize=18)

The number before : is the index of the element which needs to be substituted there, and the .3f denotes it will have 3 places after decimal , and f is for float.

Please note, above will not round the number (a would be printed with - a=0.123) , if you want the number rounded as well , you cna use list comprehension with round function -

plt.text(0.05,0.6,r'a={0:.3f}, b={1:.3f}, c={2:.3f}'.format(*[round(x,3) for x in lst]),fontsize=18)

Upvotes: 6

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