DatumHuePlatform v0.0.24datumhue.com
Contents

handle2 methods

Axis

A tick axis bound to a scale, created by area:axis(options).

Obtained from
PlotArea:axis

The examples on this page start from:

lua
local color = datumhue.color
local canvas = datumhue.draw.new({ width = 400, height = 300 })
canvas:mount({ width = 400, height = 300 })
local plot =
    canvas:chart({ margin = { left = 64, top = 16, bottom = 40 } })
plot.y_scale.domain = { min = 0, max = 100 }
local axis = plot:axis({ scale = plot.y_scale, side = "left" })

Methods 2

Axis:update

method
Axis:update(options: chart.AxisUpdateOptions)

Change the axis ticks, label, font size, format, grid, or colors.

Example
-- Labels show each value as a percent, with grid lines across.
axis:update({
    ticks = 3,
    format = "{value} %",
    label = "share",
    grid = true,
    grid_color = color("#a7c080"),
})

options chart.AxisUpdateOptions options 8 keys Omitted keys keep their current value.

KeyTypeDescription
ticksintegerTarget tick count.
tick_valuesnumber[]Explicit tick positions as data values; on a band scale, 0-based band indices (0 is the first category), as scale:map takes them.
labelstringAxis title, centered along the axis beyond the tick labels; on a vertical axis it reads along the axis.
font_sizenumber | stringSize of the tick labels and the axis label — a number (px) or a unit string like "1.5rem"/"50vw".
formatstringTick-label format string; the scale's kind selects how it is read. On a time scale it is a UTC date pattern of literal text plus %Y %m %d %H %M %S (%% for a percent sign), and an unknown specifier raises. On every other scale it is a numeric dialect with three forms: {:.N} for N fixed decimals, {} for plain stringification, or literal text with each {value} substituted.
gridbooleanDraw grid lines.
colorColorAxis / tick color.
grid_colorColorGrid-line color.

Axis:remove

method
Axis:remove()

Remove the axis.

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Victor Mono is licensed under the SIL Open Font License 1.1
Copyright (c) 2024, Rune Bjørnerås (https://github.com/rubjo)

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


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SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
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PREAMBLE
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