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我想在簡單散點圖中使用滑塊(d3-slider)過濾來自csv的數據。從散點圖中的滑塊過濾csv數據D3js
我的問題是過濾器有點無政府狀態。當我使用滑塊時,它會顯示點,但不是我想要的點。我試過this但最後修改爲that code。
這是我的代碼片段,問我,如果你希望所有:
d3.csv("cereal.csv", function(error, data) {
var dateSlider = d3.select('#slider')
.call(d3.slider().axis(true).min(2006).max(2009).step(1)
.on("slide", function(evt, value) {
dots.each(function(d) {
this.style.opacity = d.Date != value ? 1 : 0;
});
})
);
// change string (from CSV) into number format
data.forEach(function(d) {
d.Calories = +d.Calories;
d.Protein = +d.Protein;
});
// don't want dots overlapping axis, so add in buffer to data domain
xScale.domain([d3.min(data, xValue)-1, d3.max(data, xValue)+1]);
yScale.domain([d3.min(data, yValue)-1, d3.max(data, yValue)+1]);
// x-axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
// y-axis
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
// draw dots
var dots = svg.selectAll(".dot")
.data(data)
.enter().append("circle")
.attr("class", "dot")
.attr("r", 7)
.attr("cx", xMap)
.attr("cy", yMap)
.style("fill", "steelblue")
.on("mouseover", function(d) {
console.log(d.Date)
});
});
這裏是我的CSV:
Date,CerealName,Manufacturer,Type,Calories,Protein
2006,cereal-one,Nabisco,C,70,4
2006,cereal-two,Quaker Oats,C,120,3
2006,cereal-three,Kelloggs,C,74,4
2006,cereal-four,Kelloggs,C,50,4
2006,cereal-five,Ralston Purina,C,110,2
2006,cereal-six,General Mills,C,110,4
2006,cereal-seven,Kelloggs,C,110,6
2007,cereal-height,General Mills,C,130,3
2007,cereal-nine,Ralston Purina,C,90,2
2007,cereal-ten,Post,C,90,3
2007,cereal-eleven,Quaker Oats,C,120,1
2008,cereal-twelve,General Mills,C,100,6
2008,cereal-thirteen,General Mills,C,124,1
2008,cereal-fourteen,General Mills,C,110,3
2008,cereal-fifteen,General Mills,C,110,1
2008,cereal-sixteen,Ralston Purina,C,100,1
2009,cereal-seventeen,Kelloggs,C,100,2
2009,cereal-heighteen,Kelloggs,C,108,1
2009,cereal-nineteen,General Mills,C,114,1
您需要將日期轉換也編號 'data.forEach(函數(d){ d.Calories = + d.Calories; d.Protein = + d。蛋白質; d.Date = + d.Date; });' – Cyril
Thx,做到了,但它沒有改變任何東西...... – JulienJ