D3 V3 Multi-line Chart - Issues appending lines to svg - d3.js

Question

I'm having issues getting D3v4 to show lines on a chart. I might be getting v3/v4 syntax confused.
I have the data nested as there are 5 lines.
// Chart Canvas Dimentions
var margin = {top: 20, right: 80, bottom: 30, left: 50};
var width = 900;
var height = 600;
// Time Parse
var parseTime = d3.time.format("%Y-%m-%d %H:%M:%S");
// Chart Axis Sizes
yAxisMax = Math.max.apply(Math, data.map(function(o){return o.value;})) * 1.1;
yAxisMin = Math.min.apply(Math, data.map(function(o){return o.value;})) - (this.yAxisMax * 0.1);
xAxisMax = width * 0.99;
console.log('yAxisMax: '+yAxisMax);
console.log('yAxisMin: '+yAxisMin);
console.log('xAxisMax: '+xAxisMax);
var x = d3.time.scale()
.range([0, width]);
var y = d3.scale.linear()
.range([height, 0]);
var color = d3.scale.category10();
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
chartLine = d3.svg.line()
.x(function(d){ return x(parseTime(d.date)) })
.y(function(d){ return y(d.value) })
.interpolate("basis");
// Nest Entries by Name (Groups the Lines by Names - Seperate Entities)
var nestedData = d3.nest()
.key(function(d) { return d.name; })
.entries(data);
// D3 Chart - This is the Context to Work With
var context = d3.select("#chartContainer").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.attr("id", "D3lineChart")
.attr("class", "D3EventScopeContainer")
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
// Interactive HoverLine
var hoverLine = context
.append('g')
.attr('class', 'hoverLineGroup')
.append("line")
.attr('transform', 'translate(70,0)')
.attr('class', 'interactiveHoverLine hidden')
.attr("x1", 0).attr("x2", 0)
.attr("y1", 0).attr("y2", height);
// Loop through data
nestedData.forEach(function(d,i) {
console.dir(d)
console.dir(d.values)
// Add Line
context
.append('g')
.attr('class', 'lineGroup')
.append('path')
.attr('transform', 'translate(70,0)')
.attr('class', 'chartLinesGroup tag'+ d.key.replace(/\s+/g, '').replace('.', '').replace('-', '').toLowerCase())
.style("stroke", function() { return d.color = color(d.key); }) // Add the colours dynamically
.style("stroke-opacity", 1)
//.attr('d', chartLine(d.values))
.on("mouseover", function() {
d3.select(this)
.style("stroke-width", 7.5)
})
.on("mouseout", function() {
d3.select(this)
.style("stroke-width", 2.5)
});
});
It fails when I enable the line
.attr('d', chartLine(d.values))
This function must not be formated correctly to use the data.
The error I get is - related to date processing:
Any advice would be greatly appreciated.
I'm essentially trying to get the the lines to show on the chart.
thanks
*** I get around the error message by adding .parse to the end of the time format line:
// Time Parse
var parseTime = d3.time.format("%Y-%m-%d %H:%M:%S").parse;
Still nothing showing on the screen - div/svg has height/width set...
hummmmm

Answer 1

You need to read API;) But at first u must try :
var x = d3.scaleTime()
.range([0, width]);
var y = d3.scaleLinear()
.range([height, 0]);
var color = d3.scaleOrdinal(d3.schemeCategory10);
var xAxis = d3.axisBottom(x).tickFormat(d3.timeFormat("%H:%M:%S.%L"));
var yAxis = d3.axisLeft(y);
parseTime = d3.timeParse("%Y-%m-%d %H:%M:%S.%L");
chartLine = d3.line()
.curve(d3.curveMonotoneX)
.x(function(d){ return x(parseTime(d.date)) })
.y(function(d){ return y(d.value) });
Hope its help