python - Matplotlib: Writing right-to-left text (Hebrew, Arabic, etc.)

Question

I'm trying to add some text to my plot which is RTL (in this case, Hebrew). After some work managed to get it to display the text, but it's displayed LTR (meaning, in the reverese order). I've dug into the reference and did extensive search online and nothing came up.

An example for what I'm using:

import matplotlib.pyplot as plt
plt.text(0.5, 0.5, u'שלום כיתה א', name = 'Arial')
plt.show()

and it displays 'א התיכ םלוש'. In case you can't see the Hebrew, it's as if i'd input 'Hello', and the output would be 'olleH'.

I can't simply reverse the input since it's mixed LTR and RTL.

Every help would be appreciated.

Answer 1

For Arabic you need both bidi.algorithm.get_display and arabic_reshaper modules:

from bidi.algorithm import get_display
import matplotlib.pyplot as plt
import arabic_reshaper

reshaped_text = arabic_reshaper.reshape(u'لغةٌ عربيّة')
artext = get_display(reshaped_text)

plt.text(0.25, 0.45, artext , name = 'Times New Roman',fontsize=50)
plt.show()

Answer 2

For whoever encounters the same problem, I found a partial solution.

The bidi package provides this functionality, so using:

from bidi import algorithm as bidialg
import matplotlib.pyplot as plt
text = bidialg.get_display(u'שלום כיתה א')
plt.text(0.5, 0.5, text , name = 'Arial')
plt.show()

displays it correctly.

So why is it partial? Because I found out that the bidi package sometimes messes up latex expression which I use with matplotlib. So use it carefully.

Answer 3

I had the same issue and i think that using both answers of @Korem and @Nasser Al-Wohaibi like:

import arabic_reshaper
from bidi.algorithm import get_display

new_text=get_display(arabic_reshaper.reshape(old_text))

because only the arabic_reshaper didnt rearrange the letters and the bidi only didn't combine them

^_^

Answer 4

You can try to flip the text by :

import matplotlib.pyplot as plt
plt.text(0.5, 0.5, (u'שלום כיתה א')[::-1], name = 'Arial')
plt.show()

Answer 5

I know my answer is not the solution for this problem but using Plotly instead of matplotlib solved my problem. It shows Persian language words correctly.

Answer 6

Use altair instead. It is compatible with Arabic/Persian text right off the bat. No need to change anything! https://altair-viz.github.io/index.html