Columnchart - Unable to change font of text in Axis

[f3rn0s]

Okay so, by my understanding the default way the text in the axis gets rendeered is:

$#value$

Now, by specifying a custom format function for the axis I should be able to get it to render as normal text, and thus have the same font as the rest of my document. The problem comes in when we look at the implementation of bar/column charts. These define the axis themselves:

  let x = axes.axis(min: min-value, max: max-value,
                    label: x-label,
                    ticks: (grid: true, step: x-tick-step,
                            minor-step: none,
                            unit: x-unit, decimals: 1,
                            list: x-ticks))
  let y = axes.axis(min: data.len(), max: -1,
                    label: y-label,
                    ticks: (grid: true,
                            step: none,
                            minor-step: none,
                            list: y-tic-list))

From my understanding, since I can't edit these function calls to supply my own format function to them, I can't actually make it so the font renders as normal content.

In this case, this leads to a weird looking chart:

If ther eis a way to fix this and I've missed it, my apologies.

[johannes-wolf]

You have to wait for 0.2.0 to get released (or, if you are using Typst locally, you can install the cetz 0.2.0 branch on your machine). With 0.2.0 it is: x-format: label => text(<your-formatting..>, label) - you can provide a custom label formatting callback.

[f3rn0s]

Hey @johannes-wolf, with the push of 0.2.0 to latest, I'm still struggling to get this working.

You mention x-format, but in this case it would have to be something like y-format? I would love some help on this cause I can't seem to resolve the original issue using options mentioned in the manual.

[johannes-wolf]

You can give your data labels as content.
Example:

  let data = (
    ([Item A], 1),
    ([*Bold Text*], 4)
  )
  
  cetz.chart.columnchart(size: (8, 6),
    data,
    label-key: 0,
    value-key: 1,
  )

The x-format and y-format only work on auto-generated tick-labels.
You can also set the tick-labels using x-ticks: (...) (see manual).

[johannes-wolf]

Can you give example code and what you want to achieve?

[f3rn0s]

Sure!

This is the output:

Here is the code used to generate it:

#let password_lengths = (
    "< 8" : 1,
    "8"   : 5,
    "9"   : 10,
    "10"  : 55,
    "11"  : 1337,
    "12"  : 100,
    "13"  : 43,
    "> 13": 12,
)

#align(center, canvas({
    import draw: *

    let colors = palette.new(colors: (color_palette.at("main").lighten(30%), black))

    // Remove background grid
    set-style(
        grid: (
            stroke: none,
        ),
    )

    chart.columnchart(
        size: (auto, password_lengths.keys().len()),
        mode: "stacked",
        value-key: (1,),
        bar-style: colors,
        {
            let result_data = ()

            for key in password_lengths.keys() {
                result_data.push((key, password_lengths.at(key)))
            }

            //panic(result_data)
           result_data
        },
    )
}))

Since the y-tick is auto-generated, I'd like it to be text as opposed to $$, but I wasn't sure how to get that working.

[johannes-wolf]

Set y-format: v => [#calc.round(v)],

[f3rn0s]

That worked perfectly, thank you very much :)