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@FrieseWoudloper

FrieseWoudloper/.block

Last active May 17, 2019
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Groninger gemeenten
license: gpl-3.0
height: 600
scrolling: no
border: no

Gemeenten in de provincie Groningen gevisualiseerd met Turf en D3. Bron: bestuurlijke grenzen WFS van PDOK.

<!DOCTYPE html>
<head>
<style>
path {
fill: #ccc;
stroke: #fff;
stroke-width: .5px;
}
path:hover {
fill: orange;
}
div.tooltip {
position: absolute;
text-align: center;
width: 80px;
height: 14px;
padding: 2px;
font: 12px sans-serif;
background: #fff;
border: 0px;
pointer-events: none;
}
</style>
</head
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Turf.js/5.1.5/turf.min.js"></script>
<div class="graph"></div>
<script>
var width = 700, height = 400;
var svg = d3.select(".graph").append("svg")
.attr("viewBox", "0 0 " + (width) + " " + (height))
.style("max-width", "700px");
var url = "https://geodata.nationaalgeoregister.nl/bestuurlijkegrenzen/wfs?service=wfs&request=GetFeature&typeName=bestuurlijkegrenzen:gemeenten&cql_filter=gemeentenaam%20IN%20(%27Het%20Hogeland%27,%20%27Loppersum%27,%20%27Appingedam%27,%20%27Westerkwartier%27,%20%27Groningen%27,%20%27Delfzijl%27,%20%27Midden-Groningen%27,%20%27Oldambt%27,%20%27Veendam%27,%20%27Pekela%27,%20%27Westerwolde%27,%20%27Stadskanaal%27)&outputFormat=json&srsName=EPSG:4326";
var tooltip = d3.select("body")
.append("div")
.attr("class", "tooltip")
.style("opacity", 0);
d3.json(url, function(error, mapdata) {
var fixed = mapdata.features.map(function(f) {
return turf.rewind(f, {reverse:true});
});
var projection = d3.geoMercator();
var path = d3.geoPath().projection(projection);
projection.fitSize([width, height], {"type": "FeatureCollection", "features": fixed});
svg.append("g")
.attr("class", "gemeente")
.selectAll("path")
.data(fixed)
.enter()
.append("path")
.attr("d", path)
.on("mouseover", function(d) {
tooltip.transition()
.duration(200)
.style("opacity", .9);
tooltip.html(d.properties.gemeentenaam)
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY - 28) + "px");
})
.on("mouseout", function(d) {
tooltip.transition()
.duration(500)
.style("opacity", 0);
});
});
</script>
</body>
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