Function makeDateRange

packages/sanddance/src/date.ts:7–26

(tickTexts: VegaDeckGl.types.TickText[], columnStats: ColumnStats)

import { Spec } from 'vega-typings';

export function makeDateRange(tickTexts: VegaDeckGl.types.TickText[], columnStats: ColumnStats) {
    if (tickTexts.length === 1) {
        const d3TimeFormat = getD3TimeFormat(columnStats.min, columnStats.max);
        tickTexts[0].text = vegaTimeFormat([[columnStats.min, columnStats.max]], d3TimeFormat)[0];
    } else {
        const d3TimeFormat = getD3TimeFormat(tickTexts[0].value as number, tickTexts[1].value as number);
        const pairs = tickTexts.map((t, i) => {
            const min = t.value as number;
            let max: number;
            if (i === tickTexts.length - 1) {
                max = columnStats.max;
            } else {
                max = tickTexts[i + 1].value as number;
            }
            return [min, max] as [number, number];
        });
        const formattedPairs = vegaTimeFormat(pairs, d3TimeFormat);
        formattedPairs.forEach((formattedPair, i) => tickTexts[i].text = formattedPair);
    }
}

const second = 1000;
const minute = second * 60;