Going straight ahead!

This commit is contained in:
didier committed 2024-12-31 10:29:08 -05:00
1 parent 89b07a3dc6
commit a92eee0479
10 files changed
+315 -129

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import * as d3 from "https://cdn.jsdelivr.net/npm/d3@7/+esm";
function convertCsvRow(row) {
return {
relation_id: +row.relation_id,
points: JSON.parse(row.points),
};
}
const roads = await d3.csv("./data/pincourt.csv", convertCsvRow);
const projection = d3
.geoConicConformal()
.scale(100000)
.center([-73.983028645966, 45.37425995800737]);
function drawRoad(context, road) {
if (!road || !road.points || road.points.length < 1) {
return context;
}
context.moveTo(...projection([road.points[0][0], road.points[0][1]]));
for (const datum of road.points) {
context.lineTo(...projection([datum[0], datum[1]]));
}
return context;
}
const svg = d3
.create("svg")
.attr("width", 975)
.attr("height", 610)
.attr("viewBox", [0, 0, 975, 610])
.attr("style", "max-width: 100%; height: auto;");
svg
.append("g")
.attr("transform", "translate(610,20)")
.append("text")
.text("Some title");
svg
.selectAll("path")
.data(roads)
.join("path")
.attr("fill", "none")
.attr("stroke", "black")
.attr("stroke-linejoin", "round")
.attr("stroke-with", 2)
.attr("d", (road) => drawRoad(d3.path(), road).toString());
container.append(svg.node());
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import leaflet from "https://esm.sh/leaflet@1.9.4";
import * as d3 from "https://cdn.jsdelivr.net/npm/d3@7/+esm";
function convertCsvRow(row) {
return {
relation_id: +row.relation_id,
points: JSON.parse(row.points),
};
}
function getCenter(data) {
if (!data) {
return [51.505, -0.09]; // london
}
return data[0].points[0];
}
function addRoad(road, map) {
leaflet.polyline(road.points).addTo(map);
}
function addRoads(roads, map) {
for (const road of roads) {
addRoad(road, map);
}
}
const roads = await d3.csv("./data/montreal.csv", convertCsvRow);
const map = leaflet.map("leaflet-map").setView(getCenter(roads), 13);
leaflet
.tileLayer("https://tile.openstreetmap.org/{z}/{x}/{y}.png", { maxZoom: 19 })
.addTo(map);
addRoads(roads, map);
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@@ -1,13 +1,23 @@
<!DOCTYPE html>
<html>
<!doctype html>
<html style="background-color: black">
<head>
<meta charset="utf-8">
<meta charset="utf-8" />
<title>spacial-data-experiments</title>
<link
rel="stylesheet"
href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY="
crossorigin=""
/>
</head>
<body>
<div id="container"></div>
<script type="module" src='index.js'></script>
<body style="width: 100%; text-align: center">
<div id="container" style="background-color: white"></div>
<div id="leaflet-map" style="height: 1200px; width: 1200px"></div>
<!-- <script type="module" src="index-d3.js"></script> -->
<script type="module" src="index-leaflet.js"></script>
</body>
</html>
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import * as d3 from "https://cdn.jsdelivr.net/npm/d3@7/+esm";
import * as topojson from "https://cdn.jsdelivr.net/npm/topojson@3/+esm";
const roadUrl = './road.json';
const road = await (await fetch(roadUrl)).json()
const projection = d3.geoConicConformal()
.scale(12000)
.center([-72.949, 46.879])
function drawRoads(context, data) {
if(!data || data.length < 1){
return context;
}
context.moveTo(...projection([data[0].lon, data[0].lat]));
for(const datum of data){
context.lineTo(...projection([datum.lon, datum.lat]));
}
return context;
}
const svg = d3.create("svg")
.attr("width", 975)
.attr("height", 610)
.attr("viewBox", [0, 0, 975, 610])
.attr("style", "max-width: 100%; height: auto;");
svg.append("g")
.attr("transform", "translate(610,20)")
.append('text').text("fuck me");
svg.append("path")
.data([road])
.attr("fill", "none")
.attr("stroke", "black")
.attr("stroke-linejoin", "round")
.attr("stroke-with", 2)
.attr("d", d => drawRoads(d3.path(), d).toString());
container.append(svg.node());
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@@ -1,62 +0,0 @@
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