Plotly 的 Scatterpolar：如何更改 theta 的范围？

Question

I'm using Plotly's scatterpolar chart to visualize several datasets.

Here's a part of my code. Below, I create the scatterpolar instance:

go.Scatterpolar(
    r=[dataset_dataframe['word_count'].median(),
       dataset_dataframe['char_count'].median(),
       dataset_dataframe['capitals'].median(),
       dataset_dataframe['num_exclamation_marks'].median(),
       dataset_dataframe['num_punctuation'].median()],

    name=dataset_name,
    theta=['No. of Words', 'No. of Characters', 'No. of Capitals', 'No. of Exclamation Marks', 'No. of Punctuations'],
    fill='toself',
    line=dict(color='brown'),
    subplot=subplot_name),
)

And here I put it in a layout:

fig.update_layout(
    polar=dict(
    radialaxis=dict(visible=True, )),
    title='Dataset Statistics')

I do this for multiple data frames which allows me to easily compare them. The result is neat and looks like this:

Unfortunately, it appears that the range of theta is calculated automatically using the maximum value of r of each scatterpolar instance.

This is not good because, to easily compare the datasets, I need theta to be in the same range for all plots.

Question: How can I set the range of theta to a custom value, eg, from 1 to 100?

Answer 1

Within the radialaxis=dict(visible=True, )), you should be able to add range=[ 1,100 ]

Answer 2

Just as an addition because it took me over an hour to figure out: if you are working with subplots, this line might be your friend:

fig.update_polars(radialaxis=dict(range=[0, 1]))

This will apply the range to all subplots. If you just call fig.update_layout() it will only apply the range to the first subplot.