Axes Numerical Ticks in Exponential Form not Formatting Properly in Log Scale

Great library! Just hit the problem below when creating a log-log plot that seems to be due to how the tick labels are constructed.

Here’s a minimal example to reproduce the issue:

import plotext as plt

plt.xscale("log")
plt.yscale("log")
plt.plot(
    [3.66070161e-08, 4.70771327e-07, 6.13046022e-07, 9.78958201e-01,
    9.97156618e-01, 1.00000000e+00],
    [5.60983465e-12, 5.07770834e-11, 6.79463166e-11, 5.34865283e-01,
    8.23871623e-01, 9.99762833e-01]
)
plt.show()

This causes:

  File "...site-packages/plotext/_monitor.py", line 1153, in <listcomp>
    labels = [el[: el.index('.') + d + 2] for el in labels]
ValueError: substring not found

The value of labels at that point is:

['1e-11', '4.2e-10', '3.157e-08', '2.36823e-06', '0.00017765659999999998', '0.013327207709999999', '0.9997628329999999']

and there is no decimal point in the first label. distinguishing_digit() might also be returning too many digits in this case.

[nelbren]

Quick fix:

1. Replace the line:

    labels = [str(ut.round(el, d + 1)) for el in ticks]

1. For this new line:

    labels = [f"{ut.round(el, d + 1):f}" for el in ticks]

Regards! 🙂

[piccolomo]

Great Issue report, thanks a lot. I will have a look at it. Kind of resting a bit after latest upload (it was a big work).