npm install --save @vx/scale
The @vx/scale package aims to provide a wrapper around existing d3 scaling originally defined in
the d3-scale package.
Scales are functions that help you map your data values to the physical pixel size that your graph requires. For example, let's say you wanted to create a bar chart to show populations per country. If you were to use a 1-to-1 scale (IE: 1 pixel per y value) your bar for the USA would be about 321.4 million pixels high!
Instead, you can tell vx a function to use that takes a data value (like your population per
country) and quantitatively maps to another dimensional space, like pixels.
For example, we could create a linear scale like this:
const graphWidth = 500;
const graphHeight = 200;
const [minX, maxX] = getXMinAndMax();
const [minY, maxY] = getYMinAndMax();
const xScale = Scale.scaleLinear({
domain: [minX, maxX], // x-coordinate data values
range: [0, graphWidth], // svg x-coordinates, svg x-coordinates increase left to right
round: true,
});
const yScale = Scale.scaleLinear({
domain: [minY, maxY], // y-coordinate data values
// svg y-coordinates, these increase from top to bottom so we reverse the order
// so that minY in data space maps to graphHeight in svg y-coordinate space
range: [graphHeight, 0],
round: true,
});
// ...
const points = data.map((d, i) => {
const barHeight = graphHeight - yScale(d.y);
return <Shape.Bar height={barHeight} y={graphHeight - barHeight} />;
});
Example:
const scale = Scale.scaleBand({
/*
range,
round,
domain,
padding,
nice = false
*/
});
Example:
const scale = Scale.scaleLinear({
/*
range,
round,
domain,
nice = false,
clamp = false,
*/
});
Example:
const scale = Scale.scaleLog({
/*
range,
round,
domain,
base,
nice = false,
clamp = false,
*/
});
Example:
const scale = Scale.scaleOrdinal({
/*
range,
domain,
unknown,
*/
});
Example:
const scale = Scale.scalePoint({
/*
range,
round,
domain,
padding,
align,
nice = false,
*/
});
Example:
const scale = Scale.scalePower({
/*
range,
round,
domain,
exponent,
nice = false,
clamp = false,
*/
});
Example:
// No need to set the exponent, It is always 0.5
const scale = Scale.scaleSqrt({
/*
range,
round,
domain,
nice = false,
clamp = false,
*/
});
Example:
const scale = Scale.scaleTime({
/*
range,
round,
domain,
nice = false,
clamp = false,
*/
});
You also can scale time with Coordinated Universal Time via scaleUtc.
Example:
const scale = Scale.scaleUtc({
/*
range,
round,
domain,
nice = false,
clamp = false,
*/
});
D3 scales offer the ability to map points to colors. You can use
d3-scale-chromatic in conjunction with vx's
scaleOrdinal to make color scales.
You can install d3-scale-chromatic with npm:
npm install --save d3-scale-chromatic
You create a color scale like so:
import { scaleOrdinal } from '@vx/scale';
import { schemeSet1 } from 'd3-scale-chromatic';
const colorScale = scaleOrdinal({
domain: arrayOfThings,
range: schemeSet1,
});
This generates a color scale with the following colors:
There are a number of other categorical color schemes available, along with other continuous color schemes.
v0.0.199
rangeRound field in the input of scaleLinear(), scaleLog(), scalePoint(), scalePower(), scaleSqrt(), scaleTime() and scaleUtc(). #766
Instead of
scaleLinear({ rangeRound: xxx })
scaleLinear({ range: xxx, round: true });
ticks and tickFormat in the input of scaleQuantize(). It was not really doing anything anyway as both scale.ticks() and scale.tickFormat() do not mutate the scale. #766scale.type field that was attached to the d3 scales. #766@vx/grid components now accept D3 Scale as generic type instead of ScaleInput. Developers should not expect to specify this generic type as it can be inferred from the passed scale. #775GridColumnProps => GridColumnsProps (+s) to match GridRowsProps. #787<Marker /> implementation of a Line and some Text. #783AnyD3Scale, InferD3ScaleOutput, InferD3ScaleDiscreteInput, InferD3ScaleThresholdInput and ScaleInput. Add new utilities functions: getTicks, coerceNumber and toString. #773@vx/legend shapes from the index for convenience / non-deep imports. #772children prop to GridRows + GridColumns to support animated rendering. #787<BarRounded /> shape. #774d3-shape and export as part of vx/shape (arc, area, line, pie, radialLine),
similar to vx/scale has factories for d3-scale. #776SplitLinePath component to @vx/shape that allows you to create a line path split into multiple smaller line paths that can be styled independently. #778vx/scale and vx/axis. More fields passed to child render props of Axis. #773Axis is refactored to accept a ticksComponent which allows us to animate them. #779values to tickFormat(value, index, values) so that format logic can more easily leverage all ticks (because numTicks is approximate, lib consumers do not know how many tick values exist a priori). #779<Marker /> that matches actual SVG <marker>. #783<MarkerArrow />, <MarkerCross />, <MarkerX />, <MarkerCircle />, <MarkerLine />. #783@vx/react-spring that includes react-spring as a peerDep and can be a home for things that depend on react-spring. #779<AnimatedAxis /> and <AnimatedTicksRender /> in @vx/react-spring. #779vx-demo/axis demo to use <AnimatedAxis />. #779AnimatedGridRows + AnimatedGridColumns. #787AnimatedTicks/useAnimatedTicksConfig to spring-configs/useAnimatedLineTransitionConfig so it can power both animated tick + grid lines. #787animationTrajectory=outside | inside | min | max to AnimatedAxis and AnimatedGridRows/Columns. #787enableDebounceLeadingCall prop being passed into div. #763vx/scale package has 100% test coverage. #766<Marker>. #783/axis demo to include AnimatedGrid* and a animationTrajectory config. #787 - @vx/annotation: 0.0.198 => 0.0.199
- @vx/axis: 0.0.198 => 0.0.199
- @vx/bounds: 0.0.198 => 0.0.199
- @vx/brush: 0.0.198 => 0.0.199
- @vx/chord: 0.0.198 => 0.0.199
- @vx/clip-path: 0.0.198 => 0.0.199
- @vx/curve: 0.0.198 => 0.0.199
- @vx/demo: 0.0.198 => 0.0.199
- @vx/drag: 0.0.198 => 0.0.199
- @vx/event: 0.0.198 => 0.0.199
- @vx/geo: 0.0.198 => 0.0.199
- @vx/glyph: 0.0.198 => 0.0.199
- @vx/gradient: 0.0.198 => 0.0.199
- @vx/grid: 0.0.198 => 0.0.199
- @vx/group: 0.0.198 => 0.0.199
- @vx/heatmap: 0.0.198 => 0.0.199
- @vx/hierarchy: 0.0.198 => 0.0.199
- @vx/legend: 0.0.198 => 0.0.199
- @vx/marker: 0.0.198 => 0.0.199
- @vx/mock-data: 0.0.198 => 0.0.199
- @vx/network: 0.0.198 => 0.0.199
- @vx/pattern: 0.0.198 => 0.0.199
- @vx/point: 0.0.198 => 0.0.199
- @vx/react-spring: 0.0.198 => 0.0.199
- @vx/responsive: 0.0.198 => 0.0.199
- @vx/scale: 0.0.198 => 0.0.199
- @vx/shape: 0.0.198 => 0.0.199
- @vx/stats: 0.0.198 => 0.0.199
- @vx/text: 0.0.198 => 0.0.199
- @vx/threshold: 0.0.198 => 0.0.199
- @vx/tooltip: 0.0.198 => 0.0.199
- @vx/voronoi: 0.0.198 => 0.0.199
- @vx/vx: 0.0.198 => 0.0.199
- @vx/xychart: 0.0.0 => 0.0.199 (private)
- @vx/zoom: 0.0.198 => 0.0.199
FAQs
vx scale
The npm package @vx/scale receives a total of 107,062 weekly downloads. As such, @vx/scale popularity was classified as popular.
We found that @vx/scale demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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