Quadrant Charts

A quadrant chart places things by two measures on a square split into four. It starts with quadrant and its title.

quadrant What to build first
x axis: Little effort .. Much effort
y axis: Little value .. Much value
top left: Do now
top right: Plan
bottom left: Maybe
bottom right: Skip
Search: 0.3, 0.85
Dark mode: 0.2, 0.4
Offline sync: 0.8, 0.75
New logo: 0.65, 0.2
Export to PDF: 0.45, 0.6

The text above: a square in four washed quarters - Do now, Plan, Maybe and Skip - with five named points

Settings

Setting	Also	Value
`x axis`	`x`, `horizontal`, `xaxis`	the axis' low end and high end, apart by `..`, `->`, `-->` or `to`
`y axis`	`y`, `vertical`, `yaxis`	the same, upwards
`top right`	`quadrant 1`, `q1`	the top right quarter's name
`top left`	`quadrant 2`, `q2`	the top left quarter's name
`bottom left`	`quadrant 3`, `q3`	the bottom left quarter's name
`bottom right`	`quadrant 4`, `q4`	the bottom right quarter's name
`range`		both axes' range: `0..1` (the default), `0..10`, `0..100`

The quarters are numbered as Mermaid numbers them, from the top right round to the bottom right.

Points

Each line is a point: a name, a colon and its two values, across then up. Brackets round the values are allowed - Search: (0.3, 0.85) - and a colour in brackets after the name colours the point: Dark mode [teal]: 0.2, 0.4. A point outside the range is drawn at its edge, and warned of.