Plotly axis titles don't update

Anvil Q&A
1

Hello!

This is my first app with Anvil and I’m running into the same issue as Plotly Graph Title Issues, except that the proposed fix (self.plot_1.redraw()) doesn’t fix it.

I want to have labels different than x, y, z for the axis labels.

I tried several ways setting them:

  • self.plot_1.layout.xaxis.title = "Lightness"
  • setting the same xaxis=dict(title=...) at layout creation
  • self.plot_1.layout.scene.xaxis.title_text= "Lightness"
  • setting the same scene=dict( xaxis=dict(title_text="Lightness"),... at layout creation

But I don’t think it comes from the way I set it since that kind of setting works in pure Python.

Here’s a link to my app. The relevant code is in the plot3d form, at the end of the file.
https://anvil.works/build#clone:U3TDAZXTKMFFLSC4=FIHD362O5ANZBO5LTKJOOXAZ

Update:
I tried with 2D plots, and it works as expected. So this must have to do with the 3d scatter plot…

2

Hi @am1,

At layout creation you need to use xaxis=dict(title="Luminosité") not xaxis=dict(title_text ="Luminosité").

You then don’t need to set the titles in your build_color_scatter_plot() function.

Clone with fix:
https://anvil.works/build#clone:3ZI5ZBNRDCESO54U=OK3BC6A3MFSQA4MXSROLXNPI

1 Like
3

Oh, thank you very much! I thought I had tried all combinations but I missed some clearly! Obviously I don’t need it twice, this was just me trying everything :grinning:

Any idea why this is different than what is used in plotly express? https://github.com/plotly/plotly.py/blob/234ec0daa2429294fe35cbfc6c71f7595896096e/packages/python/plotly/plotly/express/_core.py#L668-L672

I’m asking because I’m afraid that’s not the only place the interface may be different (though it is probably a question of plotly version… well yes, that must be the reason…)