[英]MapPointSeries not calling heatRules in amcharts5?
我已经使用 heatRules 在 amcharts5 上成功创建了 MapPolygonSeries。 但我正在尝试添加 MapPointSeries 来设置项目符号的颜色。 在我看来,根本没有调用 heatRules。 有没有人有一个工作示例,或者我的代码的问题是否明显?
var rootElements = am5.registry.rootElements;
var root = (rootElements.length > 0? rootElements[0]: am5.Root.new("chartdiv"));
root.container.children.clear();
var chart = root.container.children.push (
am5map.MapChart.new(root, {
projection: am5map.geoMercator(),
panX: "none",
panY: "none",
wheelX: "none",
wheelY: "none"
})
);
var pointSeries = chart.series.push(
am5map.MapPointSeries.new(root, {
latitudeField: "lat",
longitudeField: "lon",
fill: am5.color(0xff0000)
})
);
var circleTemplate = am5.Template.new({});
pointSeries.bullets.push(function() {
var bulletCircle = am5.Circle.new(root, {
radius: 5,
fill: pointSeries.get("fill"),
fillOpacity: 0.8
}, circleTemplate);
return am5.Bullet.new(root, {
sprite: bulletCircle
});
});
pointSeries.set("heatRules", [{
target: circleTemplate,
dataField: "value",
key: "fill"
min: am5.color(0xff3300),
max: am5.color(0xffff00),
}]);
pointSeries.data.setAll(myPointData);
我的点数据看起来像这样:
[
{lat: -15.4183, lon: 28.287, value: 1.00448108131708},
{lat: -9.7915, lon: 29.0791, value: 1.0057251847281312},
...
]
笔记:
预先感谢您对此有任何见解!
这是我的变通方法,但它很难看,因为我基本上写了自己的热图 function。我仍然愿意接受如何让 heatRules 为点正常工作的建议!
function manualHeatMap(series) {
if (series.length < 1) {
return series;
}
var min, max;
min = max = series[0].value;
for (var i = 1; i < series.length; ++i) {
if (series[i].value > max) {
max = series[i].value;
}
if (series[i].value < min) {
min = series[i].value;
}
}
if (min == max) {
min = 0;
}
for (var i = 0; i < series.length; ++i) {
series[i].settings = {fill: am5.color(heatRuleCalc(min, max, series[i].value))};
}
return series;
}
/* ... */
var circleTemplate = am5.Template.new({});
pointSeries.bullets.push(function() {
var bulletCircle = am5.Circle.new(root, {
radius: 7,
templateField: "settings",
fillOpacity: 0.8
}, circleTemplate);
return am5.Bullet.new(root, {
sprite: bulletCircle
});
});
pointSeries.data.setAll(manualHeatMap(myPointData));
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