Rotate column labels

[david-waterworth]

Is it possible to rotate column labels by 90 degrees? I have a large pivot table and both the row and col labels are longish (and the values a single digit counts or "-" (Null) so to make it somewhat more readable I'd like to rotate the column labels?

[jrycw]

@david-waterworth , you could try adding some custom CSS like the code below:

import polars as pl
from great_tables import GT, html


(
    GT(pl.DataFrame({"longish": [1, 2]}))
    .cols_label(longish=html('<h3 style="transform: rotate(90deg);">longish</h3>'))
    
)

[travis-leith]

also, this solution does not work for really long column names:

(
    GT(pd.DataFrame({"loooooooooooooongish": [1, 2]}))
    .cols_label(loooooooooooooongish=html('<h3 style="transform: rotate(90deg);">loooooooooooooongish</h3>'))
    
)

[jrycw]

Oops, I'm not sure if style.css() would be helpful in this case.

[travis-leith]

booyah!

(
    GT(pd.DataFrame({"loooooooooooooongish": [1, 2]}))
    .tab_style(
        style = style.css(rule = "writing-mode: vertical-rl;transform: scale(-1);vertical-align: middle;font-weight: bold;"),
        locations = loc.column_header()
    )
)

[travis-leith]

this also answer my earlier question about having it apply to all columns

[jrycw]

@travis-leith, thanks for sharing your solution—.cols_label_rotate() has just been merged, inspired by your approach!

[jrycw]

It seems there are no follow-up issues related to this discussion, so I'll close it for now.