2本の線で構成された基本的な線グラフがあります。ボタンをクリックすると、2本の線のうちの1本がグラフに描画されます。
線を引くためにstroke-dasharrayを使用します。
誰かが私の行にツールチップを追加する方法を知っていますか?ストロークダッシュアレイを使用すると難しくなりますか?
これが私のコードです。
var button=d3.select("#button");
//defines canvas (area in which graph is placed)
var margin = {top: 30, right: 20, bottom: 50, left: 60},
width = 800 - margin.left - margin.right,
height = 700 - margin.top - margin.bottom;
var parseDate = d3.time.format("%d-%b-%y").parse;
//OUTPUT RANGE
var x = d3.time.scale()
.range([0, width]);
//OUTPUT RANGE
var y = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis().scale(x)
.orient("bottom")
.ticks(5);
var yAxis = d3.svg.axis().scale(y)
.orient("left")
.ticks(5);
//assigns coordinates for each piece of data
var valueline = d3.svg.line()
.interpolate("interpolation")
.x(function(d) { return x(d.date); })
.y(function(d) { return y(d.close); });
//second line data
var valueline2 = d3.svg.line()
.x(function(d) { return x(d.date); })
.y(function(d) { return y(d.open); });
//create area for 'area' below line
var area = d3.svg.area()
.x(function(d) { return x(d.date); })
.y0(height)
.y1(function(d) { return y(d.close); });
//creates area to draw graph
var svg = d3.select("body")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
//groups content
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
function make_x_axis() {
return d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5)
}
function make_y_axis() {
return d3.svg.axis()
.scale(y)
.orient("left")
.ticks(30)
}
// csv callback function
d3.csv("myData3.csv", function(data) {
data.forEach(function(d) {
d.date = parseDate(d.date);
d.close = +d.close;
d.open = +d.open;
});
//INPUT DOMAINS
//.extent() returns min and max values of argument
x.domain(d3.extent(data, function(d) { return d.date; }));
//returns max of whichever set of data is bigger
y.domain([0, d3.max(data, function(d) { return Math.max(d.close, d.open); })]);
d3.select("#button1").on("click", function(){
var path = svg.append("path") // Add the valueline path.
.attr("class", "line")
.attr("d", valueline(data))
.attr("stroke", "steelblue")
.attr("stroke-width", "5")
.attr("fill", "none");
var totalLength = path.node().getTotalLength();
path
.attr("stroke-dasharray", totalLength + "30" * 30)
.attr("stroke-dashoffset", totalLength)
.transition()
.duration(2000)
.ease("linear")
.attr("stroke-dashoffset", 0);
})
d3.select("#button2").on("click", function(){
var path2 = svg.append("path") // Add the valueline path.
.attr("class", "line2")
.attr("d", valueline2(data))
.attr("stroke", "steelblue")
.attr("stroke-width", "5")
.attr("fill", "none");
var totalLength = path2.node().getTotalLength();
path2
.attr("stroke-dasharray", totalLength + "30" * 30)
.attr("stroke-dashoffset", totalLength)
.transition()
.duration(2000)
.ease("linear")
.attr("stroke-dashoffset", 0)
})
svg.append("g") // Add the X Axis
.attr("class", "x axis")
//moves x axis to bottom of graph
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
//text label for x-axis
svg.append("text") // text label for the x axis
.attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom - 5 ) + ")")
.style("text-anchor", "middle")
.text("Date");
svg.append("g") // Add the Y Axis
.attr("class", "y axis")
.call(yAxis);
//text label for y-axis
svg.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 0 - margin.left)
.attr("x",0 - (height / 2))
//adds extra left padding as original y pos = 0
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("Value");
//adding a title to the graph
svg.append("text")
.attr("x", (width / 2))
.attr("y", 0 - (margin.top / 2))
.attr("text-anchor", "middle")
.style("font-size", "16px")
.style("text-decoration", "underline")
.text("Graph");
//draw x axis grid
svg.append("g")
.attr("class", "grid")
.attr("transform", "translate(0," + height + ")")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat("")
)
//draw y axis grid
svg.append("g")
.attr("class", "grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat("")
)
});<!--d3.csv close-->
前もって感謝します!