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使用Mike Bostock的bl.ock将状态合并为单个多边形https://bl.ocks.org/mbostock/5416440,同时还尝试合并一些CSS悬停,以突出显示整个合并部分。当鼠标悬停在地图的合并的topojson部分上时,CSS悬停功能没有响应。
没有合并的状态悬停就好了,但合并的部分不响应CSS悬停。希望解释为什么它忽略它。
<!DOCTYPE html>
<style>
.states {
fill: white;
stroke: #000;
stroke-width: 0.5px;
}
.states :hover {
fill: grey;
}
.east {
fill: orange;
}
.east :hover {
fill: white;
}
.west {
fill: blue;
}
.west :hover {
fill: white;
}
.state-borders {
fill: none;
stroke: #000;
stroke-width: 0.5px;
stroke-linejoin: round;
stroke-linecap: round;
pointer-events: none;
}
</style>
<svg width="960" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://d3js.org/topojson.v2.min.js"></script>
<script>
var svg = d3.select("svg");
var path = d3.geoPath();
var east = {
"26": 1, "29": 1, "37": 1, "31": 1, "33": 1,
"34": 1, "36": 1, "39": 1, "42": 1, "44": 1, "45": 1, "47": 1, "51": 1,
"50": 1, "55": 1, "54": 1
};
var west = {
"9": 1, "10": 1, "12": 1, "13": 1, "19": 1, "17": 1, "18": 1, "21": 1,
"25": 1, "24": 1, "23": 1
};
d3.json("https://d3js.org/us-10m.v1.json", function(error, us) {
if (error) throw error;
svg.append("g")
.attr("class", "states")
.selectAll("path")
.data(topojson.feature(us, us.objects.states).features)
.enter()
.append("path")
.attr("d", path);
svg.append("path")
.attr("class", "east")
.datum(topojson.merge(us, us.objects.states.geometries.filter(function(d) { return d.id in east; })))
.attr("d", path);
svg.append("path")
.attr("class", "west")
.datum(topojson.merge(us, us.objects.states.geometries.filter(function(d) { return d.id in west; })))
.attr("d", path);
svg.append("path")
.attr("class", "state-borders")
.attr("d", path(topojson.mesh(us, us.objects.states, function(a, b) { return a !== b; })));
});
</script>
谢谢,马克!我不知道什么让我失望,但你的代码运行得很好。时间来比较前/后和学习。再次感谢你。 –