I've worked on this for a few days now, and I cant really get my line drawn and got some date formating problems I can't crack.
Using this D3 v3 fiddle as inspiration: http://jsfiddle.net/vmvp0zja/ I tried to convert it to D3 v4, but I can't really get my data drawn properly.
I am trying to draw several lines, but I cant even draw one..
Could you take a look and see what I am missing here? Thanks! :)
// JSON data:
var data = [
{"Date":"\/Date(1475272800000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475359200000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475445600000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475532000000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475618400000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475704800000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475791200000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475877600000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475964000000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476050400000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476136800000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476223200000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476309600000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1476396000000)\/","Open":0,"Closed":0},
{"Date":"\/Date(1475445600000)\/","Open":1,"Closed":0},
{"Date":"\/Date(1475532000000)\/","Open":1,"Closed":0},
{"Date":"\/Date(1475618400000)\/","Open":2,"Closed":0},
{"Date":"\/Date(1475791200000)\/","Open":9,"Closed":0},
{"Date":"\/Date(1475964000000)\/","Open":1,"Closed":0},
{"Date":"\/Date(1475445600000)\/","Open":0,"Closed":1},
{"Date":"\/Date(1475532000000)\/","Open":0,"Closed":1},
{"Date":"\/Date(1475618400000)\/","Open":0,"Closed":1},
{"Date":"\/Date(1475964000000)\/","Open":0,"Closed":1}]
This is my D3 mess:
// linechart.js
var formatTime = d3.timeFormat("%Y-%m-%d");
data.forEach(function (d) {
var unixToISO = new Date(d.Date.match(/\d+/)[0]*1);
d.Date = formatTime(unixToISO);
d.Open = +d.Open;
d.Closed = +d.Closed;
console.log(d.Date);
return d;
});
var margin = {top: 30, right: 40, bottom: 30, left: 50 },
width = 600 - margin.left - margin.right,
height = 270 - margin.top - margin.bottom;
var x = d3.scaleTime()
.range([0, width]);
var y0 = d3.scaleLinear()
.range([height, 0]);
// Scale the range of the data
x.domain(d3.extent(data, function (d) { return d.Date; }));
y0.domain([
d3.min(data, function (d) { return Math.min(d.Open); }),
d3.max(data, function (d) { return Math.max(d.Open); })]);
var valueline1 = d3.line()
.x(function (d) { console.log(x(d.Date)); return x(d.Date); })
.y(function (d) { return y(d.Open); });
var svg = d3.select("body")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform",
"translate(" + margin.left + "," + margin.top + ")");
svg.append("g") // Add the X Axis
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x));
svg.append("g")
.attr("class", "y axis")
.style("fill", "steelblue")
.call(d3.axisLeft(y0));
svg.append("path") // Add the valueline path.
.data(data)
.attr("class", "line")
.attr("d", valueline1);
Help much appreciated in advance. I am probably overlooking something obvious. Thank you!
Changes:
data.forEach(function(d) {
var unixToISO = new Date(d.Date.match(/\d+/)[0] * 1);
d.Date = unixToISO; // here
d.Open = +d.Open;
// (...)
var valueline1 = d3.line()
.x(function(d) {
console.log(x(d.Date));
return x(d.Date);
})
.y(function(d) {
return y0(d.Open); // here
});
// (...)
svg.append("path")
.data([data]) // here
.attr("class", "line")
.attr("d", valueline1);
and added x-axis labels with
svg.append("text")
.attr("transform", "translate(" + (width / 2) + " ," +
(height + margin.top + 20) + ")")
.style("text-anchor", "middle")
.text("Date");
BTW, your data is unsorted.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.