2022-08-31 23:43:58 -04:00
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import { AxisBottom, AxisLeft } from "@visx/axis";
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import { bottomTickLabelProps } from "@visx/axis/lib/axis/AxisBottom";
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import { leftTickLabelProps } from "@visx/axis/lib/axis/AxisLeft";
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import * as allCurves from "@visx/curve";
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2022-09-01 23:46:14 -04:00
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import { GridColumns, GridRows } from "@visx/grid";
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2022-08-31 23:43:58 -04:00
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import { Group } from "@visx/group";
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import { scaleBand, scaleLinear } from "@visx/scale";
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import { LinePath } from "@visx/shape";
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import React from "react";
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import { Color } from "utils/Color";
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2022-09-01 23:46:14 -04:00
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import styles from "./LineGraph.module.css";
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2022-08-31 23:43:58 -04:00
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interface LineData {
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label: string;
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yValues: number[];
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}
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interface PointData {
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x: string;
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y: number;
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}
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interface LineGraphData {
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xValues: string[];
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lines: LineData[];
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}
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interface LineGraphProps {
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data: LineGraphData;
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/** Width of the entire graph, in pixels. */
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width: number;
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/** Height of the entire graph, in pixels. */
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height: number;
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/** Distance between the edge of the graph and the area where the bars are drawn, in pixels. */
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margin: {
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top: number;
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bottom: number;
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left: number;
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right: number;
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};
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className?: string;
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/** Font size of the category tick labels, in pixels. Default is 16px. */
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xTickLabelSize?: number;
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/** Font size of the value tick labels, in pixels. Default is 16px. */
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yTickLabelSize?: number;
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/** Font size of the value that appears when hovering over a bar, in pixels. */
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hoverLabelSize?: number;
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/** Label text for the category axis. */
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xAxisLabel?: string;
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/** Font size of the label for the cateogry axis, in pixels. */
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xAxisLabelSize?: number;
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/** Controls the distance between the category axis label and the category axis. */
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xAxisLabelOffset?: number;
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/** Label text for the value axis. */
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yAxisLabel?: string;
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/** Font size of the label for the value axis, in pixels. */
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yAxisLabelSize?: number;
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/** Controls the distance between the value axis label and the value axis. */
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yAxisLabelOffset?: number;
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}
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const DEFAULT_LABEL_SIZE = 16;
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export function LineGraph(props: LineGraphProps) {
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const {
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width,
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height,
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margin,
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data,
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className,
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xTickLabelSize = DEFAULT_LABEL_SIZE,
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yTickLabelSize = DEFAULT_LABEL_SIZE,
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hoverLabelSize,
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xAxisLabel,
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xAxisLabelSize = DEFAULT_LABEL_SIZE,
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xAxisLabelOffset = 0,
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yAxisLabel,
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yAxisLabelSize = DEFAULT_LABEL_SIZE,
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yAxisLabelOffset = 0,
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} = props;
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const yMax = height - margin.top - margin.bottom;
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const xMax = width - margin.left - margin.right;
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const actualData = data.lines.map((line) => {
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return line.yValues.map((val, idx) => {
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return { x: data.xValues[idx], y: val };
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});
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});
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// data accessors
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const getX = (d: PointData) => d.x;
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const getY = (d: PointData) => d.y;
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// scales
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const xScale = scaleBand({
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range: [0, xMax],
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domain: data.xValues,
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});
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const yScale = scaleLinear<number>({
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range: [0, yMax],
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nice: true,
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domain: [100, 0],
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});
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return (
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<svg width={width} height={height}>
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<Group top={margin.top} left={margin.left}>
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<GridColumns
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scale={xScale}
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height={yMax}
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left={margin.left}
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numTicks={5}
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stroke={Color.tertiaryBackground}
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strokeWidth={4}
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strokeDasharray="10"
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strokeLinecap="round"
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/>
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<GridRows
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scale={yScale}
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width={xMax}
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left={margin.left * 2}
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numTicks={data.xValues.length}
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stroke={Color.tertiaryBackground}
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strokeWidth={4}
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strokeDasharray="10"
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strokeLinecap="round"
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/>
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<AxisBottom
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scale={xScale}
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top={margin.top + yMax}
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left={margin.left}
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hideAxisLine
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hideTicks
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tickLabelProps={() => {
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return {
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...bottomTickLabelProps(),
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className: styles.tickLabel,
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dy: "-0.25rem",
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fontSize: `${xTickLabelSize / 16}rem`,
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width: xScale.bandwidth(),
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};
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}}
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/>
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<AxisLeft
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scale={yScale}
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left={margin.left}
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hideAxisLine
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hideTicks
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numTicks={5}
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tickLabelProps={() => {
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return {
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...leftTickLabelProps(),
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className: styles.tickLabel,
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dx: "0.75rem",
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dy: "0.25rem",
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fontSize: `${yTickLabelSize / 16}rem`,
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};
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}}
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/>
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<Group left={margin.left + xMax / (data.xValues.length * 2)}>
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{actualData.map((lineData, i) => {
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const even = i % 2 === 0;
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return (
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<Group key={`line-${i}`}>
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<LinePath
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data={lineData}
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className={styles.line}
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x={(d) => xScale(getX(d)) ?? 0}
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y={(d) => yScale(getY(d)) ?? 0}
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stroke={even ? Color.primaryAccent : Color.secondaryAccent}
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strokeWidth={3}
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strokeOpacity={2}
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/>
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</Group>
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);
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})}
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</Group>
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</Group>
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</svg>
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);
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}
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