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import React from 'react';
import PropTypes from 'prop-types';
import * as d3Scale from 'd3-scale';
import * as d3Shape from 'd3-shape';
import { lucidClassNames } from '../../util/style-helpers';
import { StandardProps } from '../../util/component-types';
import { groupByFields } from '../../util/chart-helpers';
import * as chartConstants from '../../constants/charts';
import Point from '../Point/Point';
const cx = lucidClassNames.bind('&-Points');
const { arrayOf, func, number, object, bool, string } = PropTypes;
function isValidSeries(series: any): boolean {
if (_.isArray(series)) {
const last = _.last(series);
return _.isFinite(last) || _.isDate(last);
}
return _.isFinite(series) || _.isDate(series);
}
export interface IPointsProps
extends StandardProps,
React.SVGProps<SVGGElement> {
/** Takes one of the palettes exported from \`lucid.chartConstants\`.
Available palettes:
- \`PALETTE_7\` (default)
- \`PALETTE_30\`
- \`PALETTE_MONOCHROME_0_5\`
- \`PALETTE_MONOCHROME_1_5\`
- \`PALETTE_MONOCHROME_2_5\`
- \`PALETTE_MONOCHROME_3_5\`
- \`PALETTE_MONOCHROME_4_5\`
- \`PALETTE_MONOCHROME_5_5\`
- \`PALETTE_MONOCHROME_6_5\` */
palette: string[];
/** You can pass in an object if you want to map fields to
\`lucid.chartConstants\` or custom colors:
{
'imps': COLOR_0,
'rev': COLOR_3,
'clicks': '#abc123',
} */
colorMap?: object;
/** De-normalized data, e.g.
[
{ x: 'one' , y: 1 },
{ x: 'two' , y: 2 },
{ x: 'three' , y: 2 },
{ x: 'four' , y: 3 },
{ x: 'five' , y: 4 },
]
Or (be sure to set \`yFields\` to \`['y0', 'y1', 'y2', 'y3']\`)
[
{ x: 'one' , y0: 1 , y1: 2 , y2: 3 , y3: 5 },
{ x: 'two' , y0: 2 , y1: 3 , y2: 4 , y3: 6 },
{ x: 'three' , y0: 2 , y1: 4 , y2: 5 , y3: 6 },
{ x: 'four' , y0: 3 , y1: 6 , y2: 7 , y3: 7 },
{ x: 'five' , y0: 4 , y1: 8 , y2: 9 , y3: 8 },
{ x: 'six' , y0: 20 , y1: 8 , y2: 9 , y3: 1 },
] */
data: Array<{ [key: string]: string | number | Date }>;
/** The scale for the x axis. Must be a d3 scale. Lucid exposes the
`lucid.d3Scale` library for use here. */
xScale:
| d3Scale.ScaleBand<number | string>
| d3Scale.ScalePoint<number | string>
| d3Scale.ScaleTime<number, number>;
/** The scale for the y axis. Must be a d3 scale. Lucid exposes the
`lucid.d3Scale` library for use here. */
yScale:
| d3Scale.ScaleContinuousNumeric<number, number>
| d3Scale.ScaleBand<number>
| d3Scale.ScalePoint<number>
| d3Scale.ScaleLinear<number, number>;
/** Typically this number can be derived from the yScale. However when we're
\`isStacked\` we need to calculate a new domain for the yScale based on
the sum of the data. If you need explicit control of the y max when
stacking, pass it in here. */
yStackedMax?: number | object;
/** The field we should look up your x data by. */
xField: string;
/** The field(s) we should look up your y data by. Each entry represents a
series. Your actual y data should be numeric. */
yFields: string[];
/** This will stack the data instead of grouping it. In order to stack the
data we have to calculate a new domain for the y scale that is based on
the \`sum\` of the data. */
isStacked: boolean;
/** Sometimes you might not want the colors to start rotating at the blue
color, this number will be added the line index in determining which
color the lines are. */
colorOffset: number;
/** Display a stroke around each of the points. */
hasStroke: boolean;
}
const nonPassThroughs = [
'className',
'palette',
'colorMap',
'data',
'xScale',
'yScale',
'xField',
'yFields',
'yStackedMax',
'colorOffset',
'hasStroke',
'isStacked',
'initialState',
'callbackId',
];
const defaultProps = {
xField: 'x',
yFields: ['y'],
colorOffset: 0,
hasStroke: true,
isStacked: false,
palette: chartConstants.PALETTE_7,
};
export const Points = (props: IPointsProps): React.ReactElement => {
const {
className,
data,
palette,
colorMap,
colorOffset,
xField,
hasStroke,
xScale,
yFields,
yStackedMax,
isStacked,
yScale: yScaleOriginal,
...passThroughs
} = props;
// Copy the original so we can mutate it
const yScale = yScaleOriginal.copy();
// If we are stacked, we need to calculate a new domain based on the sum of
// the various series' y data. One row per series.
const transformedData = isStacked
? d3Shape.stack().keys(yFields)(data as Array<{ [key: string]: number }>)
: groupByFields(data, yFields);
// If we are stacked, we need to calculate a new domain based on the sum of
// the various group's y data
if (isStacked) {
yScale.domain([
yScale.domain()[0],
yStackedMax || _.max(_.flatten(_.last(transformedData))),
]);
}
return (
<g {...omit(passThroughs, nonPassThroughs)} className={cx(className, '&')}>
{_.map(transformedData, (d, dIndex): any[] =>
_.map(d, (series, seriesIndex): JSX.Element | undefined => {
if (isValidSeries(series)) {
return (
<Point
key={`${seriesIndex}${dIndex}`}
/* Since data contains x and y values, data values may not have a uniform type that always matches
the expected input of the xScale */
//@ts-ignore
x={xScale(data[seriesIndex][xField])}
y={yScale(_.isArray(series) ? _.last(series) : series)}
hasStroke={hasStroke}
kind={dIndex + colorOffset}
color={_.get(
colorMap,
yFields[dIndex],
palette[(dIndex + colorOffset) % palette.length]
)}
/>
);
}
})
)}
</g>
);
};
Points.defaultProps = defaultProps;
Points.displayName = 'Points';
Points.peek = {
description: `For use within an \`svg\`. Put some points on that data.`,
categories: ['visualizations', 'chart primitives'],
madeFrom: ['Point'],
};
Points.propTypes = {
/**
Appended to the component-specific class names set on the root element.
*/
className: string,
/**
Takes one of the palettes exported from \`lucid.chartConstants\`.
Available palettes:
- \`PALETTE_7\` (default)
- \`PALETTE_30\`
- \`PALETTE_MONOCHROME_0_5\`
- \`PALETTE_MONOCHROME_1_5\`
- \`PALETTE_MONOCHROME_2_5\`
- \`PALETTE_MONOCHROME_3_5\`
- \`PALETTE_MONOCHROME_4_5\`
- \`PALETTE_MONOCHROME_5_5\`
- \`PALETTE_MONOCHROME_6_5\`
*/
palette: arrayOf(string),
/**
You can pass in an object if you want to map fields to
\`lucid.chartConstants\` or custom colors:
{
'imps': COLOR_0,
'rev': COLOR_3,
'clicks': '#abc123',
}
*/
colorMap: object,
/**
De-normalized data, e.g.
[
{ x: 'one' , y: 1 },
{ x: 'two' , y: 2 },
{ x: 'three' , y: 2 },
{ x: 'four' , y: 3 },
{ x: 'five' , y: 4 },
]
Or (be sure to set \`yFields\` to \`['y0', 'y1', 'y2', 'y3']\`)
[
{ x: 'one' , y0: 1 , y1: 2 , y2: 3 , y3: 5 },
{ x: 'two' , y0: 2 , y1: 3 , y2: 4 , y3: 6 },
{ x: 'three' , y0: 2 , y1: 4 , y2: 5 , y3: 6 },
{ x: 'four' , y0: 3 , y1: 6 , y2: 7 , y3: 7 },
{ x: 'five' , y0: 4 , y1: 8 , y2: 9 , y3: 8 },
{ x: 'six' , y0: 20 , y1: 8 , y2: 9 , y3: 1 },
]
*/
data: arrayOf(object).isRequired,
/**
The scale for the x axis. Must be a d3 scale. Lucid exposes the
\`lucid.d3Scale\` library for use here.
*/
xScale: func.isRequired,
/**
The scale for the y axis. Must be a d3 scale. Lucid exposes the
\`lucid.d3Scale\` library for use here.
*/
yScale: func.isRequired,
/**
The field we should look up your x data by.
*/
xField: string,
/**
The field(s) we should look up your y data by. Each entry represents a
series. Your actual y data should be numeric.
*/
yFields: arrayOf(string),
/**
Typically this number can be derived from the yScale. However when we're
\`isStacked\` we need to calculate a new domain for the yScale based on
the sum of the data. If you need explicit control of the y max when
stacking, pass it in here.
*/
yStackedMax: number,
/**
Sometimes you might not want the colors to start rotating at the blue
color, this number will be added the line index in determining which
color the lines are.
*/
colorOffset: number,
/**
Display a stroke around each of the points.
*/
hasStroke: bool,
/**
This will stack the data. In order to stack the data we have to calculate
a new domain for the y scale that is based on the \`sum\` of the data.
*/
isStacked: bool,
};
export default Points;
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