Linear scales topic

Linear scales map a continuous, quantitative input domain to a continuous output range using a linear transformation (translate and scale). If the range is also numeric, the mapping may be inverted. Linear scales are a good default choice for continuous quantitative data because they preserve proportional differences. Each range value y can be expressed as a function of the domain value x: y = mx + b.

Classes

ScaleIdentity

Identity scales are a special case of linear scales where the domain and range are identical.

ScaleLinear<Y>

Linear scales map a continuous, quantitative input domain to a continuous output range using a linear transformation (translate and scale).

ScaleRadial

Radial scales are a variant of linear scales where the range is internally squared so that an input value corresponds linearly to the squared output value.

Functions

tickFormat(num start, num stop, num count, [String? specifier]) → String Function(num)

Returns a number format function suitable for displaying a tick value, automatically computing the appropriate precision based on the fixed interval between tick values, as determined by tickStep.