狀況IMAGE:爲什麼我的HeatMap不能正確顯示?
狀況:
我的熱圖D3.js圖不正確顯示。
我做錯了什麼?
控制檯中有0個錯誤。我找不到這個bug。這很可能是隱藏在視野之內的東西。
CODE:
<script type="text/javascript">
d3.json("https://raw.githubusercontent.com/FreeCodeCamp/ProjectReferenceData/master/global-temperature.json", function(error, json) {
if (error) {
return console.warn(error);
}
visualizeThe(json);
});
function visualizeThe(data) {
const baseTemperature = data.baseTemperature;
const tempData = data.monthlyVariance;
const margin = {
top: 10,
right: 85,
bottom: 45,
left: 0
}
const w = 1100 - margin.left - margin.right;
const h = 500 - margin.top - margin.bottom;
const barWidth = Math.ceil(w/tempData.length);
const colors = ["#ffffd9","#edf8b1","#c7e9b4","#7fcdbb","#41b6c4","#1d91c0","#225ea8","#253494","#081d58"];
const buckets = colors.length;
const months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
const minTime = d3.min(tempData, (d) => new Date(d.year,1,1,0,0));
const maxTime = d3.max(tempData, (d) => new Date(d.year,1,1,0,0));
const xScale = d3.scaleTime()
.domain([minTime, maxTime])
.range([0, w]);
const xAxis = d3.axisBottom(xScale).ticks(20);
const svg = d3.select("#results")
.append("svg")
.attr("width", w + margin.left + margin.right)
.attr("height", h + margin.top + margin.bottom);
const div = d3.select("body")
.append("div")
.attr("class", "tooltip")
.style("opacity", 0);
svg.append("g")
.attr("transform", "translate(70," + (h+margin.top) + ")")
.call(xAxis);
const monthsLabels = svg.selectAll("monthLabel")
.data(months)
.enter()
.append("text")
.text((d) => d)
.attr("x", 100)
.attr("y", (d,i) => i * h/12 + 30)
.style("text-anchor", "end")
.attr("transform", "translate(-40," +0+ ")")
.style("font-size", 10);
const colorScale = d3.scaleQuantile()
.domain([0, buckets - 1, d3.max(tempData, (d) => d.variance + baseTemperature)])
.range(colors);
const heatMap = svg.selectAll("month")
.data(tempData, (d) => d)
.enter()
.append("rect")
.attr("x", (d,i) => i * barWidth + 60)
.attr("y", (d) => d.month * h/12 - 440)
.attr("width", barWidth)
.attr("height", h/12)
.style("fill", colors[0]);
heatMap.transition()
.duration(1000)
.style("fill", (d) => colorScale(d.variance + baseTemperature));
// heatMap.exit().remove();
svg.append("text")
.attr("transform",
"translate(" + (w/2) + " ," +
(h+ margin.top + 45) + ")")
.style("text-anchor", "middle")
.text("Years");
svg.append("text")
.attr("transform", "rotate(-90)")
.attr("y", -5)
.attr("x",0 - (h/2))
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("Months");
}
</script>
我認爲這個問題是'svg.selectAll(「月」)'因爲它沒有任何選擇。你想在那裏選擇什麼? –