Fil · September 22, 2022 16:24
diff --git a/.block b/.block
 height: 650
diff --git a/README.md b/README.md
diff --git a/index.html b/index.html
 <html>

 <head>
    <title>Walmart’s growth</title>
    <script src="https://unpkg.com/d3@7"></script>
    <script src="https://unpkg.com/topojson-client@3"></script>
    <script src="https://unpkg.com/[email protected]"></script>
    <script src="https://unpkg.com/@observablehq/[email protected]"></script>
 </head>

 <body>
    <div id=container style="max-width: 960px"></div>

    <div id=ui></div>

    <script>
        (async () => {
            const projection = d3.geoAlbersUsa().scale(1280).translate([480, 300]);
            const parseDate = d3.utcParse("%m/%d/%Y");

            const data = (await d3.tsv("./walmart.tsv")).map(d => {
                const p = projection(d);
                p.date = parseDate(d.date);
                return p;
            }).sort((a, b) => a.date - b.date);

            const us = await d3.json("https://cdn.jsdelivr.net/npm/us-atlas@1/us/10m.json");
            us.objects.lower48 = {
                type: "GeometryCollection",
                geometries: us.objects.states.geometries.filter(d => d.id !== "02" && d.id !== "15")
            };


            // chart
            const svg = d3.select("#container").append("svg")
                .attr("viewBox", [0, 0, 960, 600]);

            svg.append("path")
                .datum(topojson.merge(us, us.objects.lower48.geometries))
                .attr("fill", "#ddd")
                .attr("d", d3.geoPath());

            svg.append("path")
                .datum(topojson.mesh(us, us.objects.lower48, (a, b) => a !== b))
                .attr("fill", "none")
                .attr("stroke", "white")
                .attr("stroke-linejoin", "round")
                .attr("d", d3.geoPath());

            const g = svg.append("g")
                .attr("fill", "none")
                .attr("stroke", "black");

            const dot = g.selectAll("circle")
                .data(data)
                .join("circle")
                .attr("transform", d => `translate(${d})`);

            svg.append("circle")
                .attr("fill", "blue")
                .attr("transform", `translate(${data[0]})`)
                .attr("r", 3);

            let previousDate = -Infinity;

            function update(date) {
                dot // enter
                    .filter(d => d.date > previousDate && d.date <= date)
                    .transition().attr("r", 3);
                dot // exit
                    .filter(d => d.date <= previousDate && d.date > date)
                    .transition().attr("r", 0);
                previousDate = date;
            }

            // UI
            const scrubber = Scrubber(d3.utcWeek.every(2).range(...d3.extent(data, d => d.date)), { format: d3.utcFormat("%Y %b %-d"), loop: false });
            scrubber.addEventListener("input", () => update(scrubber.value));
            d3.select("#ui").append(() => scrubber);

        })();


        // https://observablehq.com/@mbostock/scrubber
        const html = htl.html;
        function Scrubber(values, {
            format = value => value,
            initial = 0,
            delay = null,
            autoplay = true,
            loop = true,
            loopDelay = null,
            alternate = false
        } = {}) {
            values = Array.from(values);
            const form = html`<form style="font: 12px var(--sans-serif); font-variant-numeric: tabular-nums; display: flex; height: 33px; align-items: center;">
  <button name=b type=button style="margin-right: 0.4em; width: 5em;"></button>
  <label style="display: flex; align-items: center;">
    <input name=i type=range min=0 max=${values.length - 1} value=${initial} step=1 style="width: 180px;">
    <output name=o style="margin-left: 0.4em;"></output>
  </label>
 </form>`;
            let frame = null;
            let timer = null;
            let interval = null;
            let direction = 1;
            function start() {
                form.b.textContent = "Pause";
                if (delay === null) frame = requestAnimationFrame(tick);
                else interval = setInterval(tick, delay);
            }
            function stop() {
                form.b.textContent = "Play";
                if (frame !== null) cancelAnimationFrame(frame), frame = null;
                if (timer !== null) clearTimeout(timer), timer = null;
                if (interval !== null) clearInterval(interval), interval = null;
            }
            function running() {
                return frame !== null || timer !== null || interval !== null;
            }
            function tick() {
                if (form.i.valueAsNumber === (direction > 0 ? values.length - 1 : direction < 0 ? 0 : NaN)) {
                    if (!loop) return stop();
                    if (alternate) direction = -direction;
                    if (loopDelay !== null) {
                        if (frame !== null) cancelAnimationFrame(frame), frame = null;
                        if (interval !== null) clearInterval(interval), interval = null;
                        timer = setTimeout(() => (step(), start()), loopDelay);
                        return;
                    }
                }
                if (delay === null) frame = requestAnimationFrame(tick);
                step();
            }
            function step() {
                form.i.valueAsNumber = (form.i.valueAsNumber + direction + values.length) % values.length;
                form.i.dispatchEvent(new CustomEvent("input", { bubbles: true }));
            }
            form.i.oninput = event => {
                if (event && event.isTrusted && running()) stop();
                form.value = values[form.i.valueAsNumber];
                form.o.value = format(form.value, form.i.valueAsNumber, values);
            };
            form.b.onclick = () => {
                if (running()) return stop();
                direction = alternate && form.i.valueAsNumber === values.length - 1 ? -1 : 1;
                form.i.valueAsNumber = (form.i.valueAsNumber + direction) % values.length;
                form.i.dispatchEvent(new CustomEvent("input", { bubbles: true }));
                start();
            };
            form.i.oninput();
            if (autoplay) start();
            else stop();
            Inputs.disposal(form).then(stop);
            return form;
        }
    </script>
 </body>

 </html>
diff --git a/walmart.tsv b/walmart.tsv
	<html>

	<head>
	<title>Walmart’s growth</title>
	<script src="https://unpkg.com/d3@7"></script>
	<script src="https://unpkg.com/topojson-client@3"></script>
	<script src="https://unpkg.com/[email protected]"></script>
	<script src="https://unpkg.com/@observablehq/[email protected]"></script>
	</head>

	<body>
	<div id=container style="max-width: 960px"></div>

	<div id=ui></div>

	<script>
	(async () => {
	const projection = d3.geoAlbersUsa().scale(1280).translate([480, 300]);
	const parseDate = d3.utcParse("%m/%d/%Y");

	const data = (await d3.tsv("./walmart.tsv")).map(d => {
	const p = projection(d);
	p.date = parseDate(d.date);
	return p;
	}).sort((a, b) => a.date - b.date);

	const us = await d3.json("https://cdn.jsdelivr.net/npm/us-atlas@1/us/10m.json");
	us.objects.lower48 = {
	type: "GeometryCollection",
	geometries: us.objects.states.geometries.filter(d => d.id !== "02" && d.id !== "15")
	};


	// chart
	const svg = d3.select("#container").append("svg")
	.attr("viewBox", [0, 0, 960, 600]);

	svg.append("path")
	.datum(topojson.merge(us, us.objects.lower48.geometries))
	.attr("fill", "#ddd")
	.attr("d", d3.geoPath());

	svg.append("path")
	.datum(topojson.mesh(us, us.objects.lower48, (a, b) => a !== b))
	.attr("fill", "none")
	.attr("stroke", "white")
	.attr("stroke-linejoin", "round")
	.attr("d", d3.geoPath());

	const g = svg.append("g")
	.attr("fill", "none")
	.attr("stroke", "black");

	const dot = g.selectAll("circle")
	.data(data)
	.join("circle")
	.attr("transform", d => `translate(${d})`);

	svg.append("circle")
	.attr("fill", "blue")
	.attr("transform", `translate(${data[0]})`)
	.attr("r", 3);

	let previousDate = -Infinity;

	function update(date) {
	dot // enter
	.filter(d => d.date > previousDate && d.date <= date)
	.transition().attr("r", 3);
	dot // exit
	.filter(d => d.date <= previousDate && d.date > date)
	.transition().attr("r", 0);
	previousDate = date;
	}

	// UI
	const scrubber = Scrubber(d3.utcWeek.every(2).range(...d3.extent(data, d => d.date)), { format: d3.utcFormat("%Y %b %-d"), loop: false });
	scrubber.addEventListener("input", () => update(scrubber.value));
	d3.select("#ui").append(() => scrubber);

	})();


	// https://observablehq.com/@mbostock/scrubber
	const html = htl.html;
	function Scrubber(values, {
	format = value => value,
	initial = 0,
	delay = null,
	autoplay = true,
	loop = true,
	loopDelay = null,
	alternate = false
	} = {}) {
	values = Array.from(values);
	const form = html`<form style="font: 12px var(--sans-serif); font-variant-numeric: tabular-nums; display: flex; height: 33px; align-items: center;">
	<button name=b type=button style="margin-right: 0.4em; width: 5em;"></button>
	<label style="display: flex; align-items: center;">
	<input name=i type=range min=0 max=${values.length - 1} value=${initial} step=1 style="width: 180px;">
	<output name=o style="margin-left: 0.4em;"></output>
	</label>
	</form>`;
	let frame = null;
	let timer = null;
	let interval = null;
	let direction = 1;
	function start() {
	form.b.textContent = "Pause";
	if (delay === null) frame = requestAnimationFrame(tick);
	else interval = setInterval(tick, delay);
	}
	function stop() {
	form.b.textContent = "Play";
	if (frame !== null) cancelAnimationFrame(frame), frame = null;
	if (timer !== null) clearTimeout(timer), timer = null;
	if (interval !== null) clearInterval(interval), interval = null;
	}
	function running() {
	return frame !== null \|\| timer !== null \|\| interval !== null;
	}
	function tick() {
	if (form.i.valueAsNumber === (direction > 0 ? values.length - 1 : direction < 0 ? 0 : NaN)) {
	if (!loop) return stop();
	if (alternate) direction = -direction;
	if (loopDelay !== null) {
	if (frame !== null) cancelAnimationFrame(frame), frame = null;
	if (interval !== null) clearInterval(interval), interval = null;
	timer = setTimeout(() => (step(), start()), loopDelay);
	return;
	}
	}
	if (delay === null) frame = requestAnimationFrame(tick);
	step();
	}
	function step() {
	form.i.valueAsNumber = (form.i.valueAsNumber + direction + values.length) % values.length;
	form.i.dispatchEvent(new CustomEvent("input", { bubbles: true }));
	}
	form.i.oninput = event => {
	if (event && event.isTrusted && running()) stop();
	form.value = values[form.i.valueAsNumber];
	form.o.value = format(form.value, form.i.valueAsNumber, values);
	};
	form.b.onclick = () => {
	if (running()) return stop();
	direction = alternate && form.i.valueAsNumber === values.length - 1 ? -1 : 1;
	form.i.valueAsNumber = (form.i.valueAsNumber + direction) % values.length;
	form.i.dispatchEvent(new CustomEvent("input", { bubbles: true }));
	start();
	};
	form.i.oninput();
	if (autoplay) start();
	else stop();
	Inputs.disposal(form).then(stop);
	return form;
	}
	</script>
	</body>

	</html>
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