[BUG] Y-axis labels : values above 999 do not appear

[PythonMacaron]

Requirements (place an x in each of the [ ])**

• I realize finplot is not a web lib. (Hint: it's native!)
• I've read the snippets and not found what I'm looking for.
• I've searched for any related issues and avoided creating a duplicate issue.
• I've updated finplot (pip install -U finplot).
• I've supplied the required data to run my code below.

Code to reproduce

import finplot as fplt
import pandas as pd
import yfinance as yf

symbol = 'RMS.PA'
interval = '1d'
df = yf.download(symbol, start='2020-01-01', interval=interval)
ax = fplt.create_plot('Hermès', rows=1)
fplt.candlestick_ochl(df[['Open','Close','High','Low']], ax=ax)

Describe the bug

I started noticing with Japanese stocks (like this yahoo finance ticker : 8035.T) that prices do not appear on the y-axis. Then I realized with the French stock Hermès that prices appear under 1000 but not from 1000 and above on the plot of this stock with prices going from the hundreds into the thousands over the years.

Expected behavior

Prices with 4 digits or more should appear on the y-axis.

Screenshots

Reproducible in:

Debian Linux 12:
finplot version : 0.2.55:
*pyqtgraph version : 0.13.7 *:
pyqt version : 6.8.1:

Anyway, thanks for your cool library !

[highfestiva]

This seems to no longer be the case with newer versions of finplot?

[PythonMacaron]

I just upgraded to 1.9.7, and nothing has changed.

[highfestiva]

This is what it looks like under Windows:

And with the log axis:

The code for generating the ticks should be the same. It looks like you don't have space, as "900" just fits inside the window. Did you change the text size of the ticks?

The Y-axis is part of pyqtgraph's AxisItem (it inherits it), so you'd have to investigate how that is setup in pyqtgraph. pyqtgraph has got a nice example suite, go try that on your machine and see how it looks. Probably it's doable, and simple too. Let me know how it goes.

[PythonMacaron]

Thank you for your answer !

So I read the documentation at :
https://pyqtgraph.readthedocs.io/en/latest/api_reference/graphicsItems/axisitem.html

I tried to pass an option that made sense by adding this line after the line where I define ax :
ax.getAxis("right").setStyle(autoExpandTextSpace=True)
The option was apparently accepted with no error message in the console, but it had no effect on the graph.

Same with :
ax.getAxis("right").setStyle(tickTextWidth=500)

I am stuck.

[PythonMacaron]

I changed the fonts in KDE/Plasma to 16 pts (from 20 pts) and now it is fine for Hermès, but the margin on the right is still too tight to show the prices for Korean stocks : 155300 wons for Celltrion does not fit. And 16 pts is too small for my taste for other programs.
Could you please incorporate something like setStyle(autoExpandTextSpace=True), if it is correct, to your library, so that it works automatically everywhere for everyone ?

[highfestiva]

@PythonMacaron It's difficult to test for me, as it works on my platform. If you supply a fix, I'll check that it works here and incorporate it into finplot. Thanks!