How to dynamically create append svg line using d3js? - javascript

I am attempting to draw markers to a zoomable / pannable graph.
My current version is available at https://jsfiddle.net/n2enn80o/
raw = {"l2":[-58,-44,-31,-21,-17,-16,-16,-15,-15,-14,-13,-12,-11,-10,-9,-7,-5,-3,-1,2,4,8,11,14,17,20,24,28,32,37,41,46,51,56,60,64,69,73,77,82,84,87,87,87,87,85,82,77,73,66,60,53,46,39,33,26,20,13,8,4,-1,-6,-10,-14,-16,-19,-22,-25,-26,-27,-28,-29,-30,-31,-31,-32,-32,-32,-32,-31,-31,-31,-31,-31,-30,-31,-30,-30,-30,-30,-29,-28,-27,-27,-27,-27,-27,-26,-26,-26,-26,-26,-26,-26,-26,-25,-25,-25,-25,-25,-25,-25,-25,-25,-24,-24,-24,-25,-25,-24,-23,-23,-23,-23,-23,-23,-23,-23,-23,-22,-22,-22,-22,-22,-22,-21,-21,-21,-21,-20,-20,-20,-20,-19,-18,-16,-13,-10,-6,-2,1,4,7,9,12,14,16,16,16,15,13,9,6,2,-1,-4,-7,-10,-11,-12,-14,-15,-16,-17,-18,-19,-19,-20,-20,-20,-20,-20,-20,-20,-24,-32,-45,-54,-50,-25,25,97,182,252,270,220,126,35,-25,-53,-65,-71,-70,-60,-46,-32,-22,-18,-16,-16,-15,-14,-13,-13,-12,-11,-10,-8,-7,-5,-3,-1,1,4,7,10,14,17,21,24,28,32,36,40,45,50,55,59,64,69,72,77,81,84,87,88,88,87,84,82,77,73,67,61,54,47,39,33,26,20,14,9,4,-1,-6,-9,-13,-16,-19,-22,-24,-26,-28,-29,-29,-30,-30,-31,-32,-32,-32,-31,-31,-32,-31,-31,-31,-31,-30,-30,-29,-29,-29,-29,-28,-28,-27,-27,-28,-28,-26,-26,-26,-26,-26,-26,-26,-26,-25,-25,-25,-25,-25,-25,-26,-26,-25,-24,-24,-24,-24,-24,-24,-24,-23,-23,-23,-23,-23,-23,-23,-24,-22,-22,-22,-22,-22,-22,-22,-21,-22,-20,-20,-20,-20,-20,-19,-18,-16,-13,-10,-8,-3,0,4,7,9,11,13,15,16,16,16,14,11,6,2,-2,-4,-7,-9,-11,-12,-14,-16,-17,-18,-19,-19,-19,-19,-20,-20,-20,-20,-20,-20,-23,-30,-43,-54,-53,-30,17,88,172,245,271,230,138,45,-19,-50,-63,-70,-70,-61,-48,-34,-23,-18,-17,-16,-16,-15,-14,-13,-13,-11,-10,-8,-7,-5,-3,-1,1,4,7,9,13,16,20,23,27,31,36,40,44,49,54,59,63,68,73,76,81,83,86,88,87,87,85,82,78,73,68,62,55,48,40,33,27,20,14,9,4,0,-5,-9,-13,-16,-19,-22,-24,-26,-28,-29,-29,-29,-30,-31,-31,-32,-31,-32,-32,-32,-32], "startts":1357714800000,"marker1":[50,100]};
var data =[];
for(var i=0;i<raw.l2.length;i++)
{
var marker = Number.NaN;
for(var j=0;j<raw.marker1.length;j++)
{
if(i==raw.marker1[j])
{
marker=i;
break;
}
}
var obj = {"date":raw.startts+(1/244.140625*1000)*i, "value":raw.l2[i]/75,"marker":marker}
data.push(obj)
}
margin = {
top: 20,
right: 20,
bottom: 20,
left: 45
};
width = 1800 - margin.left - margin.right;
height = 600 - margin.top - margin.bottom;
var x = d3.time.scale()
.domain(d3.extent(data, function (d) {
return d.date;
}))
.range([0, width]);
var y = d3.scale.linear()
.domain(d3.extent(data, function (d) {
return d.value;
}))
.range([height, 0]);
var line = d3.svg.line()
.x(function (d) {
return x(d.date);
})
.y(function (d) {
return y(d.value);
});
var zoom = d3.behavior.zoom()
.x(x)
.y(y)
.on("zoom", zoomed);
svg = d3.select('#chart')
.append("svg:svg")
.attr('width', width + margin.left + margin.right)
.attr('height', height + margin.top + margin.bottom)
.append("svg:g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoom);
svg.append("svg:rect")
.attr("width", width)
.attr("height", height)
.attr("class", "plot");
var make_x_axis = function () {
return d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
};
var make_y_axis = function () {
return d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5);
};
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
svg.append("svg:g")
.attr("class", "x axis")
.attr("transform", "translate(0, " + height + ")")
.call(xAxis);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
var marker = svg.append("line")
.attr("x1",100)
.attr("y1", 0)
.attr("x2",100)
.attr("y2", height)
.attr("class", "marker")
svg.append("text")
.attr("x", 100)
.attr("y", 0)
.attr("dy", ".35em")
.attr("dx", 5)
.attr("class", "marker-text")
.text(function(d) { return "test"; });
svg.append("g")
.attr("class", "x grid")
.attr("transform", "translate(0," + height + ")")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""));
svg.append("g")
.attr("class", "y grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""));
var clip = svg.append("svg:clipPath")
.attr("id", "clip")
.append("svg:rect")
.attr("x", 0)
.attr("y", 0)
.attr("width", width)
.attr("height", height);
var chartBody = svg.append("g")
.attr("clip-path", "url(#clip)");
chartBody.append("svg:path")
.datum(data)
.attr("class", "line")
.attr("d", line);
function zoomed() {
console.log(d3.event.translate);
console.log(d3.event.scale);
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
svg.select(".x.grid")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""));
svg.select(".y.grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""));
svg.select(".line")
.attr("class", "line")
.attr("d", line);
}
I have been able to add static lines to my d3 plot in the example, what i am trying to achieve is to make the marker line along with the text "test" to be moving along with the graph.
What I have tried is to use a d3.svg.line() with a line generator, but it ends up not getting the reference to d. Another version I have attempted is to create a function as below but that does not get the reference of d, and draws the line at zero. Here i attempted to draw the line if and only if the marker tag was present in the data. By default when populating the data i have ensured that it has Number.NaN when i dont need to draw the marker.
var marker = svg.append("line")
.attr("x1",function(d) { if(d.marker!=Number.NaN) return x(d.date); })
.attr("y1", 0)
.attr("x2",function(d) { if(d.marker!=Number.NaN) return x(d.date); })
.attr("y2", height)
.attr("class", "marker")

I have made a couple of small changes, as per my reply to your question. Inside your zoom handler zoomed() you need to change the x1 & x2 attributes of marker, and the x attr of markerText.
This function fires on each zoom event to move stuff around or redraw stuff according to your zoom, and your axes.
raw = {"l2":[-58,-44,-31,-21,-17,-16,-16,-15,-15,-14,-13,-12,-11,-10,-9,-7,-5,-3,-1,2,4,8,11,14,17,20,24,28,32,37,41,46,51,56,60,64,69,73,77,82,84,87,87,87,87,85,82,77,73,66,60,53,46,39,33,26,20,13,8,4,-1,-6,-10,-14,-16,-19,-22,-25,-26,-27,-28,-29,-30,-31,-31,-32,-32,-32,-32,-31,-31,-31,-31,-31,-30,-31,-30,-30,-30,-30,-29,-28,-27,-27,-27,-27,-27,-26,-26,-26,-26,-26,-26,-26,-26,-25,-25,-25,-25,-25,-25,-25,-25,-25,-24,-24,-24,-25,-25,-24,-23,-23,-23,-23,-23,-23,-23,-23,-23,-22,-22,-22,-22,-22,-22,-21,-21,-21,-21,-20,-20,-20,-20,-19,-18,-16,-13,-10,-6,-2,1,4,7,9,12,14,16,16,16,15,13,9,6,2,-1,-4,-7,-10,-11,-12,-14,-15,-16,-17,-18,-19,-19,-20,-20,-20,-20,-20,-20,-20,-24,-32,-45,-54,-50,-25,25,97,182,252,270,220,126,35,-25,-53,-65,-71,-70,-60,-46,-32,-22,-18,-16,-16,-15,-14,-13,-13,-12,-11,-10,-8,-7,-5,-3,-1,1,4,7,10,14,17,21,24,28,32,36,40,45,50,55,59,64,69,72,77,81,84,87,88,88,87,84,82,77,73,67,61,54,47,39,33,26,20,14,9,4,-1,-6,-9,-13,-16,-19,-22,-24,-26,-28,-29,-29,-30,-30,-31,-32,-32,-32,-31,-31,-32,-31,-31,-31,-31,-30,-30,-29,-29,-29,-29,-28,-28,-27,-27,-28,-28,-26,-26,-26,-26,-26,-26,-26,-26,-25,-25,-25,-25,-25,-25,-26,-26,-25,-24,-24,-24,-24,-24,-24,-24,-23,-23,-23,-23,-23,-23,-23,-24,-22,-22,-22,-22,-22,-22,-22,-21,-22,-20,-20,-20,-20,-20,-19,-18,-16,-13,-10,-8,-3,0,4,7,9,11,13,15,16,16,16,14,11,6,2,-2,-4,-7,-9,-11,-12,-14,-16,-17,-18,-19,-19,-19,-19,-20,-20,-20,-20,-20,-20,-23,-30,-43,-54,-53,-30,17,88,172,245,271,230,138,45,-19,-50,-63,-70,-70,-61,-48,-34,-23,-18,-17,-16,-16,-15,-14,-13,-13,-11,-10,-8,-7,-5,-3,-1,1,4,7,9,13,16,20,23,27,31,36,40,44,49,54,59,63,68,73,76,81,83,86,88,87,87,85,82,78,73,68,62,55,48,40,33,27,20,14,9,4,0,-5,-9,-13,-16,-19,-22,-24,-26,-28,-29,-29,-29,-30,-31,-31,-32,-31,-32,-32,-32,-32], "startts":1357714800000,"marker1":[50,100]};
var data =[];
for(var i=0;i<raw.l2.length;i++)
{
var marker = Number.NaN;
for(var j=0;j<raw.marker1.length;j++)
{
if(i==raw.marker1[j])
{
marker=i;
break;
}
}
var obj = {"date":raw.startts+(1/244.140625*1000)*i, "value":raw.l2[i]/75,"marker":marker}
data.push(obj)
}
margin = {
top: 20,
right: 20,
bottom: 20,
left: 45
};
width = 1800 - margin.left - margin.right;
height = 600 - margin.top - margin.bottom;
var x = d3.time.scale()
.domain(d3.extent(data, function (d) {
return d.date;
}))
.range([0, width]);
var y = d3.scale.linear()
.domain(d3.extent(data, function (d) {
return d.value;
}))
.range([height, 0]);
var line = d3.svg.line()
.x(function (d) {
return x(d.date);
})
.y(function (d) {
return y(d.value);
});
var zoom = d3.behavior.zoom()
.x(x)
.y(y)
.on("zoom", zoomed);
svg = d3.select('#chart')
.append("svg:svg")
.attr('width', width + margin.left + margin.right)
.attr('height', height + margin.top + margin.bottom)
.append("svg:g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoom);
svg.append("svg:rect")
.attr("width", width)
.attr("height", height)
.attr("class", "plot");
var make_x_axis = function () {
return d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
};
var make_y_axis = function () {
return d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5);
};
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
svg.append("svg:g")
.attr("class", "x axis")
.attr("transform", "translate(0, " + height + ")")
.call(xAxis);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
svg.append("g")
.attr("class", "x grid")
.attr("transform", "translate(0," + height + ")")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""));
svg.append("g")
.attr("class", "y grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""));
// Moved this after you append your grids
var marker = svg.append("line")
.attr("x1",100)
.attr("y1", 0)
.attr("x2",100)
.attr("y2", height)
.attr("class", "marker")
// Moved this after you append your grids & saved it to a var for later use
var markerText = svg.append("text")
.attr("x", 100)
.attr("y", 0)
.attr("dy", ".35em")
.attr("dx", 5)
.attr("class", "marker-text")
.text(function(d) { return "test"; });
var clip = svg.append("svg:clipPath")
.attr("id", "clip")
.append("svg:rect")
.attr("x", 0)
.attr("y", 0)
.attr("width", width)
.attr("height", height);
var chartBody = svg.append("g")
.attr("clip-path", "url(#clip)");
chartBody.append("svg:path")
.datum(data)
.attr("class", "line")
.attr("d", line);
function zoomed() {
console.log(d3.event.translate);
console.log(d3.event.scale);
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
svg.select(".x.grid")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""));
svg.select(".y.grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""));
svg.select(".line")
.attr("class", "line")
.attr("d", line);
// Position at the start time according to your x scale. x(val)
// It's not clear from your question where you want to position it
var markerPos = x(raw.startts);
// Move marker to position
marker.attr("x1", markerPos ).attr("x2", markerPos );
// Move marker text to position
markerText.attr("x", markerPos );
}
Fiddle: https://jsfiddle.net/kqnLfkvw/1/

This can be solved by using d3 axis. A working example is available at https://jsfiddle.net/3gww76s0/
var make_x_marker = function (scale=1, transform=[0,0]) {
console.log(transform)
var markers =[];
var markerLabels={};
for (i=0; i<raw.marker1.length; i++)
{
var value=transform[0]+scale*(1/244.140625*1000)*raw.marker1[i];
markers.push(value)
markerLabels[value]="A"+Math.floor(Math.random()*26);
}
return d3.svg.axis()
.orient("top")
.tickValues(markers)
.tickSize(height-15)
.tickFormat(function(d){return markerLabels[d]})
};

Related

use img instead of text label in d3.js line chart

Fiddle Example
I couldn't get ordinal scales to work with zooming and panning to achieve horizontally scroll-able effect so I have settled for scale.linear() to use numeric values for axis ticks. I was wondering if it is possible to superimpose the text label in g.tick with an image element. I have come up with this code after .call(xAxis)
svg.append("svg:g")
.attr("class", "x axis")
.attr("transform", "translate(0, " + height + ")")
.call(xAxis)
.selectAll(".tick text").each(function(k,i){
console.log(data[k]["img"]);
var r = document.createElement('image')
r.setAttribute('x',0)
r.setAttribute('y',9)
r.setAttribute('xlink:href',data[k]["img"])
r.setAttribute('width',50)
r.setAttribute('height',50)
this.parentNode.insertBefore(r,this);
})
I saw that the elements are prepended in g.tick but the images are nowhere to be seen. Is it because of the x and y values? Also, how can I bind the image links from the JSON data to the image element? I have tried data[k]["img"] but it gave me Cannot read property 'img' of undefined.
var img = "https://www.gravatar.com/avatar/904fd39461599f72d580fadf3a73115b?s=128&d=identicon&r=PG&f=1";
var data = [{"item":1,"diameter":"15.00","img":img},{"item":2,"diameter":"10.00","img":img},
{"item":3,"diameter":"25.00","img":img},{"item":4,"diameter":"7.00","img":img},
{"item":5,"diameter":"35.00","img":img},{"item":6,"diameter":"15.00","img":img},
{"item":7,"diameter":"12.00","img":img},{"item":8,"diameter":"10.00","img":img},
{"item":9,"diameter":"17.00","img":img},{"item":10,"diameter":"13.00","img":img},
{"item":11,"diameter":"5.00","img":img},{"item":12,"diameter":"10.00","img":img},
];
function line_chart(field,el){
margin = {
top: 20,
right: 20,
bottom: 20,
left: 45
},
tickno = 10,
width = 960 - margin.left - margin.right,
height = 450 - margin.top - margin.bottom,
x = d3.scale.linear().domain(d3.extent(data, function (d) {
return d.item;
})).range([0, width]),
ymax = d3.max(data,function(d){
return (parseInt(d[field])+1);
}),
ymin = d3.min(data,function(d){
return d[field];
}),
xmax = d3.max(data,function(d){
return d.name;
}),
y = d3.scale.linear()
.domain([ymin,ymax])
.range([height, 0]);
var line = d3.svg.line()
.x(function (d) {
return x(d.item);
})
.y(function (d) {
return y(d[field]);
});
var zoom = d3.behavior.zoom()
.x(x)
.scaleExtent([1, 1])
.y(y)
.on("zoom", zoomed);
svg = d3.select(el)
.append("svg:svg")
.attr('width', width + margin.left + margin.right)
.attr('height', height + margin.top + margin.bottom)
.append("svg:g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoom);
svg.append("svg:rect")
.attr("width", width)
.attr("height", height)
.attr("class", "plot");
var make_x_axis = function () {
return d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(tickno);
};
var make_y_axis = function () {
return d3.svg.axis()
.scale(y)
.orient("left")
.ticks(tickno);
};
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(tickno);
svg.append("svg:g")
.attr("class", "x axis")
.attr("transform", "translate(0, " + height + ")")
.call(xAxis)
.selectAll(".tick text").each(function(data){
var r = document.createElement('image')
r.setAttribute('x',0)
r.setAttribute('y',9)
r.setAttribute('xlink:href','https://www.gravatar.com/avatar/904fd39461599f72d580fadf3a73115b?s=32&d=identicon&r=PG&f=1')
r.setAttribute('width',50)
r.setAttribute('height',50)
this.parentNode.insertBefore(r,this);
})
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(tickno);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
svg.append("g")
.attr("class", "x grid")
.attr("transform", "translate(0," + height + ")")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""));
svg.append("g")
.attr("class", "y grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""));
var clip = svg.append("svg:clipPath")
.attr("id", "clip")
.append("svg:rect")
.attr("x", 0)
.attr("y", 0)
.attr("width", width)
.attr("height", height);
var chartBody = svg.append("g")
.attr("clip-path", "url(#clip)");
chartBody.append("svg:path")
.datum(data)
.attr("class", "line")
.attr("d", line);
svg.append('g').attr('class','dots').selectAll(".dot").data(data).enter().append("circle").attr("r",3.5)
.attr("cx",function(d){return x(d.item);})
.attr("cy",function(d){return y(d[field]);})
function zoomed() {
console.log(d3.event.translate);
console.log(d3.event.scale);
svg.select(".dots")
.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
svg.selectAll(".dots circle").attr("r", function(){
return (3.5 * d3.event.scale);
});
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
svg.select(".x.grid")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""));
svg.select(".y.grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""));
svg.select(".line")
.attr("class", "line")
.attr("d", line);
svg.selectAll(".dots circle").attr("r", function(){
return (3.5 * d3.event.scale);
});
}
}
line_chart('diameter','#area')
Your image doesn't display because your width is too small.
Also, it's a bit cleaner if you append the images the d3 way:
.selectAll(".tick").each(function(d,i){
d3.select(this)
.append('image')
.attr('xlink:href', data[i].img)
.attr('x',0)
.attr('width',128)
.attr('height',128);
})
Updated fiddle.

Path not showing d3 (binding issue?)

I've been working on a project using fake data and sketches I've found online to create a line graph. However, I can't display paths with a JSON file containing numerical data. This is not the final data but I'm using the field "Id" as numerical value.
I should be able to see a diagonal line, but nothing shows on the graph.
<body>
<script>
var margin = {top: 20, right: 30, bottom: 30, left: 50},
width = 900 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom,
a = 3.779528*5,
f = width/height,
ticksX = 1+ (width/a),
ticksY = 1+ (height/a*f)
c = 1 + (width/a*10);
var x = d3.scale.linear()
.domain([194, 2229])
.range([0, width]);
var y = d3.scale.linear()
.domain([194, 2229])
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.tickSize(-height)
.tickPadding(10)
.tickSubdivide(true)
.ticks(ticksX)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.tickPadding(10)
.tickSize(-width)
.tickSubdivide(true)
.ticks(ticksY)
.orient("left");
var zoom = d3.behavior.zoom()
.x(x)
//.y(y)
.scaleExtent([1, 10])
.on("zoom", zoomed);
var svg = d3.select("body").append("svg")
.call(zoom)
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.json("pacientes.json", function(error, data) {
data.forEach(function(d) {
d.Id = +d.Id;
d.Edad = +d.Edad;
console.log(d.Id);
});
x.domain(d3.extent(data, function(d) { return d.Id; }));
y.domain(d3.extent(data, function(d) { return d.Id; }));
svg.append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", width)
.attr("height", height);
var line = d3.svg.line()
.interpolate("linear")
.x(function(d) { return x(d.Id); })
.y(function(d) { return y(d.Edad); });
svg.selectAll('svg-path')
.data(data)
.enter()
.append("path")
.attr("x", function(d) { return x(d.Id); })
.attr("y", function(d) { return x(d.Id); })
.style("stroke-width", 10)
.attr("class", "line")
.attr("clip-path", "url(#clip)")
.attr('stroke', 'blue')
.attr("d", line);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
svg.append("g")
.attr("class", "y axis")
.append("text")
.attr("class", "axis-label")
.attr("transform", "rotate(-90)")
.attr("y", (-margin.left) + 10)
.attr("x", -height/2)
.text('mV');
}); // closing line
function zoomed() {
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
svg.selectAll('path.line').attr('d', line);
);
}
</script>
</body>
</html>
I'm pretty convinced that my error is here
svg.selectAll('svg-path')
.data(data)
.enter()
.append("path")
.attr("x", function(d) { return x(d.Id); })
.attr("y", function(d) { return x(d.Id); })
.style("stroke-width", 10)
.attr("class", "line")
.attr("clip-path", "url(#clip)")
.attr('stroke', 'blue')
.attr("d", line);
The data is being loaded correctly and the SVGs are being created (as you can see from the pictures). Any help will be appreciated.
I did not add the CSS, but it should be a blue line.
Thank you!

My d3 scatterplot doesn't show on the graph

I have tried to work on my D3 scatter plot. And it seems like my data isn't showing on the graph itself. Any reasons why?
And also.. i have set my x and y domain to certain limit. But when i zoom in, out.. it will still go beyond the limit.
Here is my codes...
var margin = { top: 20, right: 20,bottom: 20, left: 45 },
width = 900 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var parseDate = d3.time.format("%Y-%m-%dT%H:%M:%S").parse;
var x = d3.time.scale().range([0, width]);
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);
var zoom = d3.behavior.zoom()
.x(x)
.on("zoom", zoomed);
var svg = d3.select('.graph')
.append("svg")
.attr('width', width + margin.left + margin.right)
.attr('height', height + margin.top + margin.bottom)
.call(zoom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var clip = svg.append("svg:clipPath")
.attr("id", "clip")
.append("svg:rect")
.attr("x", 0)
.attr("y", 0)
.attr("width", width)
.attr("height", height);
var chartBody = svg.append("g")
.attr("clip-path", "url(#clip)");
var make_x_axis = function () {
return d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
};
var make_y_axis = function () {
return d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5);
};
function zoomed() {
console.log(d3.event.translate);
console.log(d3.event.scale);
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
svg.select(".x.grid")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""));
svg.select(".y.grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""));
svg.select(".dot")
.attr("class", "circle")
.attr("r", 5)
.attr("cx", function(d) { return x(d.ArtDateTime);})
.attr("cy", function(d) { return y(d.Ranking * 3); })
}
d3.csv("FinalCSVFile.csv", function(error, data) {
data.forEach(function(d) {
d.ArtDateTime = parseDate(d.ArtDateTime);
d.Ranking = +d.Ranking;
});
x.domain(d3.extent(data, function(d) { return d.ArtDateTime; }));
y.domain([0, 5]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0, " + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
svg.append("g")
.attr("class", "x grid")
.attr("transform", "translate(0," + height + ")")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat(""));
svg.append("g")
.attr("class", "y grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat(""));
chartBody.append("svg:path")
.selectAll(".dot")
.data(data)
.enter().append("circle")
.attr("class", "dot")
.attr("r", 5)
.attr("cx", function(d) { return x(d.ArtDateTime);})
.attr("cy", function(d) { return y(d.Ranking); });
});
Enlighten me please?
NEED HELP AND ADVICE!
I AM very new to D3.js

D3: Panning along date x axis

I'm trying to display dates in the x axis and at the same time zoom it when you scroll.
So, I have this code:
<script type="text/javascript">
var data = [
[{'x':20111001,'y':1},{'x':20111002,'y':6},{'x':20111003,'y':11},{'x':20111004,'y':1},{'x':20111005,'y':2},{'x':20111006,'y':12},{'x':20111007,'y':2},{'x':20111008,'y':3},{'x':20111009,'y':13},{'x':20111010,'y':3}],
[{'x':20111001,'y':2},{'x':20111002,'y':2},{'x':20111003,'y':12},{'x':20111004,'y':2},{'x':20111005,'y':3},{'x':20111006,'y':1},{'x':20111007,'y':2},{'x':20111008,'y':7},{'x':20111009,'y':2},{'x':20111010,'y':7}],
[{'x':20111001,'y':3},{'x':20111002,'y':10},{'x':20111003,'y':13},{'x':20111004,'y':3},{'x':20111005,'y':12},{'x':20111006,'y':14},{'x':20111007,'y':6},{'x':20111008,'y':1},{'x':20111009,'y':7},{'x':20111010,'y':9}],
[{'x':20111001,'y':4},{'x':20111002,'y':4},{'x':20111003,'y':14},{'x':20111004,'y':14},{'x':20111005,'y':10},{'x':20111006,'y':15},{'x':20111007,'y':3},{'x':20111008,'y':0},{'x':20111009,'y':3},{'x':20111010,'y':12}]
];
var colors = [
'steelblue',
'green',
'red',
'purple'
]
var b =[];
var parseDate = d3.time.format("%Y%m%d").parse;
data.forEach(function (d) {
f = d;
f.forEach(function(f){
b.push(parseDate(String(f.x)));
})
})
var margin = {top: 20, right: 30, bottom: 30, left: 50},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.time.scale()
.domain([d3.extent(b)])
.range([0, width]);
var y = d3.scale.linear()
.domain([-1, 16])
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.tickSize(-height)
.tickPadding(10)
.tickSubdivide(true)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.tickPadding(10)
.tickSize(-width)
.tickSubdivide(true)
.orient("left");
var zoom = d3.behavior.zoom()
.x(x)
.y(y)
.scaleExtent([1, 10])
.on("zoom", zoomed);
var svg = d3.select("body").append("svg")
.call(zoom)
.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")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
svg.append("g")
.attr("class", "y axis")
.append("text")
.attr("class", "axis-label")
.attr("transform", "rotate(-90)")
.attr("y", (-margin.left) + 10)
.attr("x", -height/2)
.style("text-anchor", "end")
.text("Ventas (Miles €)");
svg.append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", width)
.attr("height", height);
var line = d3.svg.line()
.interpolate("linear")
.x(function(d) { return x(d.x); })
.y(function(d) { return y(d.y); });
svg.selectAll('.line')
.data(data)
.enter()
.append("path")
.attr("class", "line")
.transition()
.attr("clip-path", "url(#clip)")
.attr('stroke', function(d,i){
return colors[i%colors.length];
})
.attr("d", line);
var div = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);
var points = svg.selectAll('.dots')
.data(data)
.enter()
.append("g")
.attr("class", "dots")
.attr("clip-path", "url(#clip)");
points.selectAll('.dot')
.data(function(d, index){
var a = [];
d.forEach(function(point,i){
a.push({'index': index, 'point': point});
});
return a;
})
.enter()
.append('circle')
.attr('class','dot')
.attr("r", 2.5)
.attr('fill', function(d,i){
return colors[d.index%colors.length];
})
.attr("transform", function(d) {
return "translate(" + x(d.point.x) + "," + y(d.point.y) + ")"; }
).on("mouseover", function(d) {
div.transition()
.duration(200)
.style("opacity", .9);
div .html(d.point.x + "K<br/>" + d.point.y)
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY) + "px");
})
.on("mouseout", function(d) {
div.transition()
.duration(500)
.style("opacity", 0);
})
function zoomed() {
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
svg.selectAll('path.line').attr('d', line);
points.selectAll('circle').attr("transform", function(d) {
return "translate(" + x(d.point.x) + "," + y(d.point.y) + ")"; }
);
}
</script>
I can make it with numbers but can't implement it with dates. I've checked other examples and how they make it but can't find the way to code it in my chart.
I'd like to know how to display dates on x axis.
Is your question how to make the axis dates instead of just numbers? Or is it how to make the axis pannable? If it's the first, use code like this:
var x=d3.time.scale()
.domain([minDate,maxDate])
The minDate and maxDate have to be javascript Date objects.

Adding tooltips to line graph data points AFTER lines animate

I have a basic line graph with two lines. When I click a button, one of the two lines will draw on the graph.
I use stroke-dasharray to draw the lines.
Would anyone know how I could add tooltips to my lines?
Does using stroke-dasharray make it harder?
Heres my code.
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-->​
Thanks in advance!
The easiest way to add a tooltip is to append an svg:title element to the elements you want to have a tooltip for. It will be displayed by the browser automatically when you hover over the element. It works for all kinds of elements as well.
So your code would need to look something like
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")
.append("title").text("whatever");
If you need more sophisticated functionality, you could try for example tipsy, which works in a similar way.

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