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feat(scales): add nice argument to linear and time scales (#1473)
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Signed-off-by: Matthew Peveler <[email protected]>
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MasterOdin authored Apr 21, 2021
1 parent 80a9c37 commit 644faf4
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Showing 5 changed files with 36 additions and 1 deletion.
5 changes: 5 additions & 0 deletions packages/scales/index.d.ts
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Expand Up @@ -6,6 +6,9 @@
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

import { CountableTimeInterval } from 'd3-time'

declare module '@nivo/scales' {
export interface LinearScale {
type: 'linear'
Expand All @@ -14,6 +17,7 @@ declare module '@nivo/scales' {
stacked?: boolean
reverse?: boolean
clamp?: boolean
nice?: boolean | number
}

export interface PointScale {
Expand All @@ -35,6 +39,7 @@ declare module '@nivo/scales' {
useUTC?: boolean
min?: 'auto' | Date
max?: 'auto' | Date
nice?: boolean | number | CountableTimeInterval
}

export interface LogScale {
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1 change: 1 addition & 0 deletions packages/scales/package.json
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Expand Up @@ -21,6 +21,7 @@
],
"dependencies": {
"d3-scale": "^3.0.0",
"d3-time": "^1.0.11",
"d3-time-format": "^2.1.3",
"lodash": "^4.17.11"
},
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6 changes: 5 additions & 1 deletion packages/scales/src/linearScale.js
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Expand Up @@ -10,7 +10,7 @@ import { scaleLinear } from 'd3-scale'
import PropTypes from 'prop-types'

export const linearScale = (
{ axis, min = 0, max = 'auto', stacked = false, reverse = false, clamp = false },
{ axis, min = 0, max = 'auto', stacked = false, reverse = false, clamp = false, nice = false },
xy,
width,
height
Expand All @@ -32,6 +32,9 @@ export const linearScale = (
if (reverse === true) scale.domain([maxValue, minValue])
else scale.domain([minValue, maxValue])

if (nice === true) scale.nice()
else if (typeof nice === 'number') scale.nice(nice)

scale.type = 'linear'
scale.stacked = stacked
scale.clamp(clamp)
Expand All @@ -46,4 +49,5 @@ export const linearScalePropTypes = {
stacked: PropTypes.bool,
reverse: PropTypes.bool,
clamp: PropTypes.bool,
nice: PropTypes.oneOfType([PropTypes.number, PropTypes.bool]),
}
4 changes: 4 additions & 0 deletions packages/scales/src/timeScale.js
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ export const timeScale = (
min = 'auto',
max = 'auto',
useUTC = true,
nice = false,
},
xy,
width,
Expand All @@ -44,6 +45,8 @@ export const timeScale = (

const scale = useUTC ? scaleUtc() : scaleTime()
scale.domain([minValue, maxValue]).range([0, size])
if (nice === true) scale.nice()
else if (typeof nice === 'object' || typeof nice === 'number') scale.nice(nice)

scale.type = 'time'
scale.useUTC = useUTC
Expand All @@ -55,4 +58,5 @@ export const timeScalePropTypes = {
type: PropTypes.oneOf(['time']).isRequired,
format: PropTypes.string,
precision: PropTypes.oneOf(timePrecisions),
nice: PropTypes.oneOfType([PropTypes.bool, PropTypes.number, PropTypes.object]),
}
21 changes: 21 additions & 0 deletions packages/scales/tests/linearScale.test.js
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Expand Up @@ -73,3 +73,24 @@ it(`should allow to clamping`, () => {
expect(scale(0.5)).toBe(100)
expect(scale(1)).toBe(0)
})

it(`should allow nice`, () => {
const scale = linearScale(
{ axis: 'x', nice: true },
{ x: { min: 0.243, max: 0.933 } },
100,
100
)

expect(scale(0)).toBe(0)
expect(scale(0.5)).toBe(50)
expect(scale(1)).toBe(100)
})

it(`should allow numeric nice`, () => {
const scale = linearScale({ axis: 'x', nice: 2 }, { x: { min: 0.243, max: 0.933 } }, 100, 100)

expect(scale(0)).toBe(0)
expect(scale(0.5)).toBe(50)
expect(scale(1)).toBe(100)
})

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