I have a scrolling line chart that is being updated in realtime as data comes in. Here is the js fiddle for the line chart. https://jsfiddle.net/eLu98a6L/
What I would like to do is replace the line with a dot graph, so each point that comes in would create a dot, and the scrolling feature is maintained.This is the type of chart I would like to create dow jones dot graph and ultimately I would like to remove the line underneath.
This is the code I have used to try and add dots to my graph.
g.append("g")
.selectAll("dot")
.data(4)
.enter("circle")
.attr("cx", "2")
.attr("cy", "2");
So far I haven't had any success. I'm very new to d3, so any help is appreciated. Thanks!
Based on your code an approach for this can be :
var circleArea = g.append('g'); /* added this to hold all dots in a group */
function tick() {
// Push a new data point onto the back.
data.push(random());
// Redraw the line.
/* hide the line as you don't need it any more
d3.select(this)
.attr("d", line)
.attr("transform", null);
*/
circleArea.selectAll('circle').remove(); // this makes sure your out of box dots will be remove.
/* this add dots based on data */
circleArea.selectAll('circle')
.data(data)
.enter()
.append('circle')
.attr('r',3) // radius of dots
.attr('fill','black') // color of dots
.attr('transform',function(d,i){ return 'translate('+x(i)+','+y(d)+')';});
/* here we can animate dots to translate to left for 500ms */
circleArea.selectAll('circle').transition().duration(500)
.ease(d3.easeLinear)
.attr('transform',function(d,i){
if(x(i )<=0) { // this makes sure dots are remove on x=0
d3.select(this).remove();
}
return 'translate('+x(i-1)+','+y(d)+')';
});
/* here is rest of your code */
// Slide it to the left.
d3.active(this)
.attr("transform", "translate(" + x(-1) + ",0)")
.transition()
.on("start", tick);
// Pop the old data point off the front.
data.shift();
}
See it in action : https://codepen.io/FaridNaderi/pen/weERBj
hope it helps :)
Related
I have D3 graph base on Multi-line graph 3 with v7: Legend, this sample contains few and shorts legends for the graph. In my sample I want to increase the length for legends and stack the data if is necessary, I want to avoid overlapping in the legends,
https://bl.ocks.org/d3noob/d4a9e3e45094e89808095a47da19808d
dataNest.forEach(function(d,i) {
svg.append("path")
.attr("class", "line")
.style("stroke", function() { // Add the colours dynamically
return d.color = color(d.key); })
.attr("d", priceline(d.value));
// Add the Legend
svg.append("text")
.attr("x", (legendSpace/2)+i*legendSpace) // space legend
.attr("y", height + (margin.bottom/2)+ 5)
.attr("class", "legend") // style the legend
.style("fill", function() { // Add the colours dynamically
return d.color = color(d.key); })
.text(d.key);
});
There are two possible solutions I can think of, shown in this JSFiddle.
First, if it is acceptable that the legend is not part of the svg, then realize the legend with a simple unordered list in a container next to the svg. This is probably the best when there is a varying number of legend entries and there are no restrictions considering the styling via css. The browser takes care of varying lengths and does an automatic line break.
Second, if the legend has to be a part of the svg, one can use the getBBox()-method that determines the coordinates of the smallest rectangle around an object inside an svg.
In a first step select all the legend entries that have been rendered and get the bounding boxes:
const bbox = svg.selectAll(".legend")
.nodes()
.map(legend_entry => legend_entry.getBBox());
With this array and the width of the svg, we can calculate the positions for each legend entry:
bbox.reduce((pos, box) => {
let left, right, line;
if (pos.length === 0) {
left = 0;
line = 1;
} else {
/* The legend entry starts where the last one ended. */
left = pos[pos.length - 1].right;
line = pos[pos.length - 1].line;
}
/* Cumulative width of legend entries. */
right = left + box.width;
/* If right end of legend entry is outside of svg, make a line break. */
if (right > svg_width) {
line = line + 1;
left = 0;
right = box.width;
}
pos.push({
left: left,
right: right,
line: line,
});
return pos;
}, []);
Margins and paddings have to be included manually in the calculation of the positions. Of course, one could obtain the maximum width of all legend entries and make them all the same width with center alignment as in the d3noob example.
In the JSFiddle, I realized this repositioning by first rendering a hidden legend and then an additional one that is visible. It is of course possible to use only one legend, but I would not to take any chances that the process of repositioning is visible in the rendered document.
I have a parallel coordinates plot and I want to show lines onclick for d.dataset = train else hide them.
I wanted to access the row using .filter() like this:
data.filter(function(d) { return d.dataset == "train"; }).attr("visibility", "hidden");
and then set the attr visibility to hidden so that afterwards I can write a function with onclick to make the visibility visible, something like this:
// On Click, we want to add data to the array and chart
svg.on("click", function() {
var line = d3.mouse(this);
if (d.dataset === "train"){
//Display line of d.dataset === train
// line.attr("visibility", "visible");
}
});
This one I found also d3.selectAll("[dataset=train]").attr("visibility", "hidden"); but this doesn't work when doing with data elements right?
Right now I tried these and nothing happens. This is the jsfiddle I am working in. The line with "dataset":"train", is visible and doesn't hide.
How can I hide the lines when "dataset":"train", and then show them when onclick to the other lines in the parallel coordinates plot?
Any help would be highly appreciated.
First, make some marks on each path, for example, give a class name like coorPath so that it will be easier to find them. I added it for both background and foreground since I didn't know their difference.
svg.append("g")
.attr("class", "background coorPath") // add classname
.selectAll("path")
.data(dataSet)
.enter().append("path")
.attr("d", draw);
// CHANGE: duplicate with below code
/* svg.append("g")
.attr("class", "foreground coorPath")
.selectAll("path")
.data(dataSet)
.enter().append("path")
.attr("d", draw); */
// USE THE COLOR SCALE TO SET THE STROKE BASED ON THE DATA
foreground = svg.append("g")
.attr("class", "foreground coorPath")
.selectAll("path")
.data(dataSet)
.enter().append("path")
.attr("d", draw)
.style("stroke", function(d) {
var company = d.type.slice(0, d.type.indexOf(' '));
return color(company);
})
Then, find out the line of train, and make it invisible at first
let trainline = d3.selectAll("path").filter(function(d) { return d.dataset == "train"; })
trainline.attr("visibility", "hidden");
Show the line of train when one of other lines is clicked.
svg.selectAll(".coorPath").on("click", function(d) {
// show train when click others
trainline.attr("visibility", "visible")
});
a demo here
I have been trying to implement D3.js donut with multiple rings. But, the problem is with click event as it works fine with click on first ring but, show weird behavior while clicking on the second ring. Also it shows some weird problems with mousehover as well.
{"metaData":null,
"data":{graphDetails":[{"displayName":"MUW","name":"DEF","score":5},{"displayName":"ABC","name":"ABCD","score":15},{"displayName":"DEFA","name":"DEF","score":35}],"graphOneDetails":[{"displayName":"D1","name":"D1","score":11},{"displayName":"D2","name":"D2","score":25},{"displayName":"D3","name":"D3","score":22}]},"success":true}
//Define arc ranges
var arcText = d3.scale.ordinal().rangeRoundBands([0, width], .1, .3);
// Determine size of arcs
var arc = d3.svg.arc().innerRadius(radius - 75).outerRadius(radius - 25);
var arc_2= d3.svg.arc().innerRadius(radius - 25).outerRadius(radius);
//Create the donut pie chart layout
d3.layout.pie().value(function(d){
return d["score"];
}).sort(null);
//Append SVG attributes and append g to the SVG
d3.select("#donut-chart")
.attr("width", width)
.attr("height",height)
.append("g")
.attr("transform","translate("+radius+","+radius+")");
//Define Inner Circle
svg.append("circle")
.attr("cx",0)
.attr("cy",0)
.attr("r",280)
.attr("fill","#fff");
//Calculate SVG paths and fill in the colors
var div = d3.select("body")
.append("div")
.attr("class","tooltip")
.style("opactiy",0);
// Append First Chart
var g = svg.selectAll(".arc").data(pie($scope.categories))
.enter()
.append("g")
.attr("class","arc")
.on("click",function(d, i){
alert(d.data.name)
}).on("mouseover",function(d){
alert(d.data.name);
}).on("mouseout",function(d){
alert(d.data.name);
});
g.append("path")
.attr("d",arc)
.attr("fill","#024");
g.append("text")
.attr("transform", function(d){
return "translate("+arc.centroid(d)+")";
}).attr("dy",".35em")
.style("text-anchor","middle")
.attr("fill","#fff")
.text(function (d,i){
return d.data.displayName
});
g.selectAll(".arc text").call(wrap.arcText.rangeBand());
//Append Second Chart
g.data(pie($scope.divisions)).append("path")
.attr("d",arc_2)
.attr("fill","#eee");
g.on("click, function(d,i){
alert(d.data.name);
}).on("mouseover", function(d){
alert(d.data.name);
});
//Append text to second chart
g.append("text")
.attr("transform", function(d){
return "translate("+arc_2.centroid(d)+")";
}).attr("dy",".35em")
.style("text-anchor","middle")
.attr("fill","#fff")
.text(function (d,i){
return d.data.displayName
});
g.selectAll(".arc text").call(wrap.arcText.rangeBand());
In initial state it works fine, but, when I click one chart it displays the data correctly. And when I click inner chart and updates my json to
{"metaData":null,
"data":{graphDetails":[{"displayName":"MUW","name":"DEF","score":5},{"displayName":"DEFA","name":"DEF","score":35}],"graphOneDetails":[{"displayName":"D1","name":"D1","score":11},{"displayName":"D3","name":"D3","score":22}]},"success":true}
Then it display inner chart as a full donut but, the outer chart comes as an arc instead of full donut. Same problem is happening with the mouse over as while I am hovering over the second chart each and everything comes correctly as a tool-tip. (I didn't include the code of tool-tip). But, I mouse over on ABC and returns me DEFA. So, I think there must be something related to the way I have appended these two arcs.
EDIT 1
Created the JSFidle, with my dataset and it's not showing anything
http://jsfiddle.net/pcr3ogt4/
Thanks to previous answers, I've made a map and a related graph with D3js.
The bar and the map are in specific divs, and I don't use the same data source. That's a part of my problem.
For the map, I used queue.js to load several files at a time. One of these files is a .csv which follow specifically the same order than the geojson where polygons are stocked. If I sort differently .csv's data, the correspondance with my .geojson's polygons is bad and my choropleth map become false.
Here's the associated code for the interactive polygons of the map :
svg.append("g").attr("class","zones")
.selectAll("path")
.data(bureaux.features) //"bureaux" is a reference to the geojson
.enter()
.append("path")
.attr("class", "bureau")
.attr("d", path)
.attr("fill", function(d,i){
if (progression[i].diff_ries<-16.1){ //"progression" is the reference to my .csv
return colors[0] // colors is a previous array with the choropleth's colors
}
else if (progression[i].diff_ries<-12.6){
return colors[1]
}
else if (progression[i].diff_ries<-9){
return colors[2]
}
else {return colors[3]
}
})
.on('mouseover', tip.show) // tip.show and tip.hide are specific functions of d3.js.tip
.on('mouseout', tip.hide)
};
No problem here, the code works fine. We arrived now to the graph. He used a .json array called at the beginning of the script, like this
var array=[{"id_bureau":905,"diff_keller":4.05,"diff_ries":-15.02},{etc}];
"id_bureau" is the common' index of my .geojson, my .csv and this .json's array. Then, I sort the array with a specific function. Here's a part of the code associated to the graph :
svg2.selectAll(".bar")
.data(array)
.enter().append("rect")
// I colour on part of the bars like the map
.attr("fill", function(d,i){
if (array[i].diff_ries<-16.1){
return colors[0]
}
else if (array[i].diff_ries<-12.6){
return colors[1]
}
else if (array[i].diff_ries<-9){
return colors[2]
}
else {return colors[3]
}
})
.attr("x", function (d) {
return x(Math.min(0, d.diff_ries));
})
.attr("y", function (d) {
return y(d.id_bureau);
})
.attr("width", function (d) {
return Math.abs(x(d.diff_ries) - x(0));
})
.attr("height", y.rangeBand());
// this part is for the other bars
svg2.selectAll(".bar")
.data(tableau)
.enter().append("rect")
// the others bars are always blue, so I used a simple class
.attr("class", "bar_k")
.attr("x", function (d) {
return x(Math.min(0, d.diff_keller));
})
.attr("y", function (d) {
return y(d.id_bureau);
})
.attr("width", function (d) {
return Math.abs(x(d.diff_keller) - x(0));
})
.attr("height", y.rangeBand());
svg2.append("g")
.attr("class", "x axis")
.call(xAxis);
svg2.append("g")
.attr("class", "y axis")
.append("line")
.attr("x1", x(0))
.attr("x2", x(0))
.attr("y2", height2);
So now, what I wan't to do is, when the mouse is over one polygon, to keep the correspondent bar of the graph more visible than the others with an opacity attribution (and when the mouse out, the opacity of all the graph returns to 1).
Maybe it seems obvious, but I don't get how I can correctly link the map and the graph using the "id_bureau" because they don't follow the same order like in this question : Change class of one element when hover over another element d3.
Does somebody know if I can easily transform the mouseover and mouseout events in the map's part to change at the same time my graph?
To highlight a feature on the map
To perform a focus on one feature, you just need a few line of CSS:
/* Turn off every features */
#carte:hover .bureau {
opacity:0.5;
}
/* Turn on the one you are specifically hovering */
#carte:hover .bureau:hover {
opacity:1;
}
To highlight a bar in your second chart
First of all, you need to distinguish the two kind of bar with two classes :
// First set of bars: .bar_k
svg2.selectAll(".bar_j")
.data(tableau)
.enter().append("rect")
// Important: I use a common class "bar" for both sets
.attr("class", "bar bar_j")
// etc...
// Second set of bars: .bar_k
svg2.selectAll(".bar_k")
.data(tableau)
.enter().append("rect")
.attr("class", "bar bar_k")
// etc...
Then you have to change your mouseenter/mouseleave functions accordingly:
svg.append("g").attr("class","zones")
.selectAll("path")
.data(bureaux.features)
.enter()
// creating paths
// ...
// ...
.on('mouseover', function(d, i) {
// You have to get the active id to highligth the right bar
var id = progression[i].id_bureau
// Then you select every bars (with the common class)
// to update opacities.
svg2.selectAll(".bar").style("opacity", function(d) {
return d.id_bureau == id ? 1 : 0.5;
});
tip.show(d,i);
})
.on('mouseout', function(d, i) {
// To restore the initial states, select every bars and
// set the opcitiy to 1
svg2.selectAll(".bar").style("opacity", 1);
tip.hide(d,i);
});
Here is a demo.
Performance issue
This implementation is kind of slow. You might improve it by toggling an "active" class to the bars you want to highlight.
An other good tail might be to gather the two kinds of bar in a single group that you describe singularly with an id (ie bureau187 for instance). That way you could select directly the bar you want into the mouseenter function and turn it on with an "active" class.
With this class you could mimic the strategy I implemented to highlight a feature and then remove svg2.selectAll(".bar").style("opacity", 1); from the mouseleave function :
/* Turn off every bars */
#carte:hover .bar {
opacity:0.5;
}
/* Turn on the one you want to highligth */
#carte:hover .bar.active {
opacity:1;
}
I'm working on a fairly basic bar chart where I'm trying to have a span icon that appears, anchored at the start of each bar. Which icon appears is dependent on the class of the bar. For example, if the bar is blue, I want a certain icon vs. if the bar is red.
I've appended and added the span which shows up in the console, but is not actually appearing any where in the chart.
I have the icons stored as spans in my css, one for each version of the value name that gets plugged in.
I've tried a variety of selections, ordering, etc. But can't get it to stick.
var bars = svg.selectAll('.bar')
.data(data)
.enter().append('g')
.attr('class', 'bar');
bars.append('rect')
var icons = svg.selectAll('rect')
.data(data)
.enter().append("span")
.attr("class", function(d, i) {
return "icon-" + d.value + "-right";
})
.attr('dx', -6)
.attr('dy', (bar_height / 2) +5)
.attr('text-anchor', 'start');
You should use foreignObject element to insert HTML into SVG.
Like so:
var icons = svg.selectAll('foreignObject').data(data);
icons.enter().append("foreignObject")
.attr("class", function(d) { return "icon-" + d.value + "-right"; })
.append("xhtml:body")
.append("xhtml:span");
Also you can use text element to add icons to the SVG:
var icons = svg.selectAll('text').data(data);
icons.enter().append("text")
.html("") // utf-8 character for the icon