How to make a plot with repeating labels on X axis?

Question

As a result of the previous code, I have two lists. How can I make a plot with letters from "lab" (one by one) on the X-axis, and corresponding numbers from list val - on the Y axis?

I tried:

lab = ['a', 'b', 'c', 'a', 'b', 'c']
val = [1, 2, 4, 1, 2, 4]

from matplotlib import pyplot as plt

plt.bar(lab, val)

It plots each letter only once.
enter image description here And I want it to plot the whole sequence letter by letter.

You should tag `matplotlib` as this is related to it – Sheldore Jan 27 '19 at 13:53 — Sheldore, Jan 27 '19 at 13:53

score 2 · Accepted Answer · answered Jan 27 '19 at 13:40

2

You can use indexes, and then just set the xticks labels like:

lab = ['G', 'U', 'U', 'U', 'U', 'U', 'C', 'A', 'U', 'U', 'U', 'R', 'G', 'C', 'N']
lab_x = [i for i in range(len(lab))]
val = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 4]

from matplotlib import pyplot as plt

plt.bar(lab_x, val)
plt.xticks(lab_x, lab)

answered Jan 27 '19 at 13:40

cmaureir

285
2
8

1

You can just do `plt.bar(range(len(lab)), val)`. No need to use additional for loop and list comprehension and `lab_x` – Sheldore Jan 27 '19 at 13:51
Thank you for help! I applied the previous variant and it worked. – fiskur Jan 27 '19 at 14:24

How to make a plot with repeating labels on X axis?

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