I want to switch from Highcharts to ECharts (preferably 3), but my current graphs have multiple series ('lines' in my case), with each their own yaxis, and it seems ECharts doesn't support this.
These metrics do not relate at all, so they all need their own yaxis. I combine them in 1 chart so they can be compared relative to each other (500 visits, €30000, 3% conversion.. etc). It makes no sense to plot 500 visits and 3% conversion rate on the same yaxis.
Is there a way to give each line it's own yaxis? It doesn't have to be a visible one (since there can only be two with ECharts, left/right of canvas, and that's ok), but the data needs to be plotted to an individual axis.
try this
yAxis: [
{
type: 'value',
name: 'left_yaxis',
nameTextStyle: {
color: '#fff'
},
splitLine:{
show:false,
},
axisLabel: {
textStyle:{
color:'#fff',
}
}
},
{
type: 'value',
name: 'right_yaxis',
nameTextStyle: {
color: '#fff'
},
axisLabel: {
interval:'0',
textStyle:{
color:'#fff',
}
},
splitLine: {
lineStyle: {
color: ['#454545'],
}
},
min:0,
//max:800000,
splitNumber:5
}
],
Here ar example from echarts for dual y axis:
example 1
example 2
You can add more than one y axis in echarts by making yaxis element as a array
Yes, ECharts supports multi-axis. See example at ECharts Gallery.
Related
I am trying to draw a Critical Power Chart like this:
The data I get is linear. One value for every second from 1 up to 18000.
I have no clue how to teach flot to draw an non-linear x-axis.
I tried to set custom ticks, but this seems to just have impact to the labels, not the line.
The x axis ticks will always be the same and don't need to be calculated:
[1s,5s,15s,30s,1m,2m,3m,5m,10m,20m30m,1h,2h,3h,5h]
Playground including tons of data: https://jsfiddle.net/ogeo2ygx/6/
Code:
$.plot($("#cpChart"), [{data: data,label: "Critical Power", labelBoxBorderColor: 0, color: '#cbcbcb',yaxis:1,lines: { show: true, fill: true } }], {
xaxes: [{
//here should be some Magic to Draw an nice Critical Power Chart
tickFormatter: (t, v) => {
return t + "s";
}
}],
yaxes: [{
alignTicksWithAxis: 1,
position: "left",
tickFormatter: (t, v) => {
return t.toFixed(0) + " Watt"
}
}],
legend: {
position: 'sw',
labelBoxBorderColor: 0
},
colors: ["#1ab394"],
grid: {
color: "#999999",
clickable: true,
tickColor: "#D4D4D4",
borderWidth: 0,
hoverable: true
}
});
You can achieve that (which is called logarithmic scale) with two steps:
Transform the x-axis values using the Math.log function (with a +1 because the logarithm of zero is -infinity).
Define a custom ticks array with your ticks.
See the documentation for more information.
Relevant code:
xaxes: [{
ticks: [[1, '1s'],[5, '5s'], [15, '15s'],[30, '30s'],[60, '1m'],[120, '2m'],[180, '3m'], [300, '5m'], [600, '10m'], [1200, '20m'], [1800, '30m'],[3600, '1h'], [7200, '2h'], [10800, '3h'], [18000, '5h']],
transform: (x) => { return Math.log(1 + x); },
inverseTransform: (x) => { return Math.exp(x) - 1; }
}],
Updated fiddle: https://jsfiddle.net/ogeo2ygx/8/
Is there a way to create a Legend control for series that belong to Indicator Plot with Dojo Charting.
I've tried some standard well described ways from the documentation. But with no success! Legend are not appearing for Indicator Plot.
Maybe somebody know is it possible to draw legend for this case or not?
Thanks in advance!
EDIT(my code added):
1. id - id of chart dom element.
2. opts.chartOpts - chart options from outside js.
3. legname - id of legend dom element.
4. scale.avg - is just a double value.
this.chart = new Chart(id, this.opts.chartOpts);
this.chart.addPlot("default", {
animate: { duration: 1000, easing: easing.linear },
type: ColumnsPlot,
markers: true,
gap: 1
});
this.chart.addPlot("avgline", {
type: IndicatorPlot,
vertical: false,
lineStroke: { color: "#00ff00", style: "ShortDash" },
stroke: { width: '1.2px' },
fill: '#eeeeee',
font: 'normal normal normal 11px Arial',
labels: 'none',
offset: { x: 32, y: 4 },
values: [scale.avg],
precision: this.opts.precision
});
//Add axis code goes here... cutted for clearance
this.chart.addSeries('Power', chartOptions.data);
this.chart.addSeries('Average', [scale.avg], { plot: 'avgline' });
var tip = new Tooltip(this.chart, "default", { 'class' : 'kaboom' });
var mag = new Magnify(this.chart, "default");
var hightlight = new Highlight(this.chart, "default");
this.chart.render();
this.leg = new Legend({ chart: this.chart, horizontal: false }, this.legName);
And as result of this code I see legend for 'default' plot 'Power' series only. And nothing for 'Average' series.
In my app users can add/remove as many series they want to the HighStock component using a piece of UI I wrote. However, when a user adds multiple time-series and the legend is under the chart, it shrinks the chart's height (in favor of the legend). This way the overall height remains constant.
However, I'm interested in having the plotting area keeping the same height and still have the legend be under it, changing the overall height if needed.
code
Here's a fiddle to demo the issue.
Ideas?
set maxHeight property. this will fix the maximum height of legend and gives navigation to legend.
maxHeight: 100,
here is the fiddle http://jsfiddle.net/9vZ8F/2/
instead if you remove
layout:'vertical'
legend will not occupy much space
here is a fiddle for it http://jsfiddle.net/9vZ8F/1/
Hope this is useful to you.
How about doing a calculation on the number of series you have and adjusting the chart height based on that?
var series = [{
name: 'series 1',
data: usdeur
}, {
name: 'series 2',
data: usdeur
}, {
name: 'series 3',
data: usdeur
}, {
name: 'series 4',
data: usdeur
}, {
name: 'series 5',
data: usdeur
}
],
height = 400 + (series.length * 15);
$('#container').highcharts('StockChart', {
chart: {
borderWidth: 2,
height: height
},
legend: {
enabled: true,
layout: 'vertical'
},
navigator: {
//top: 200
},
rangeSelector: {
selected: 1
},
series: series
});
http://jsfiddle.net/SSn4e/
I'm wondering if it is possible to zoom in on a slice in a pie chart.
My chart is modeled after this example jsfiddle example
chart: {
renderTo: 'container',
type: 'area',
zoomType: 'x',
}
But it doesn't seem to work with pie charts. Am I missing something here?
Ideally, I would have a pie chart with 2 layers, where the outer layer serves as a child of the inner layer. When selecting a child slice, I could then have an entire pie chart showing that slice alone, along with its own children, etc.
Unfortunaltely zoom is not allowed for Pie Charts as its properties show you
x: to zoom in x-axis
y: to zoom in y-axis
xy: to zoom in both axes
but you can use size property with JavaScript to show zooming.
size property demo
I think I found what I was actually looking for. It isn't zoom, but rather the option of capturing click events on slices.
In order to do that, one must use the allowPointSelect attribute, which can be added to a pie chart like this (just one of several different ways):
plotOptions: {
pie: {
shadow: false,
allowPointSelect: true,
},
}
Then in order to capture clicks one has to declare the events attribute in the series being used:
series: [{
name: 'Example',
data: [
{
name: 'Firefox',
value: 45.0
},
{
name: 'IE',
value: 26.8
},
{
name: 'Chrome',
value: 12.8,
},
],
size: '100%',
point: {
events: {
click: function() {
// some code to execute when clicking a slice
alert('Slice name: ' + this.name + ' and value: ' + this.value);
}
}
}
}]
Then in that click function, any javascript code can be executed, and the declared fields in the data can also be accessed. So a second pie chart could theoretically be created on the fly.
I'm looking for a way to create what come to know to be called a "bubble chart" for a website I'm building. It needs to be compatible with IE7 and above, and of course all the good browsers like Firefox, Chrome and Safari. And no flash since this thing will need to run on iOS.
The chart needs to look like this, http://www.flickr.com/photos/jgrahamthomas/5591441300/
I've browse online and tried a few things, including:
Google Scatter Charts. This doesn't work as it seems Google Charts limits the size of a point to something smaller than I need. And Venn Diagrams are limited to three circles.
Protovis Dots. Great library, but isn't compatible with IE8.
Raphael Javascript. This one might be my best bet, but there's no explicit support for bubble charts.
Thanks for your help.
It looks like Raphael javascript is the way to go. It's compatible with IE6. I found a great tutorial at http://net.tutsplus.com/tutorials/javascript-ajax/an-introduction-to-the-raphael-js-library/ and am able to get the example working on my rails site with this code:
# window.onload = function() {
# var paper = new Raphael(document.getElementById('canvas_container'), 500, 500);
# var circle = paper.circle(100, 100, 80);
# for(var i = 0; i < 5; i+=1) {
# var multiplier = i*5;
# paper.circle(250 + (2*multiplier), 100 + multiplier, 50 - multiplier)
# }
# var rectangle = paper.rect(200, 200, 250, 100);
# var ellipse = paper.ellipse(200, 400, 100, 50);
# }
You can give Protovis a chance, the library looks good for your needs: http://vis.stanford.edu/protovis/ex/
Another charting library is Highcharts, but I haven't tried it yet: http://www.highcharts.com/
Have you had a look at flot?
It's a plotting library for jQuery. While it technically doesn't have any "native" support for bubble charts it is possible to create bubble charts with it by using a few tricks, the simplest one probably being to simply put each point in its own data series (thus allowing you to control the radius of each individual point.
By defining your points similar to this you'll be able to create a bubble chart:
var dataSet = [{
color:"rgba(0,0,0,0)", // Set the color so it's transparent
shadowSize:0, // No drop shadow effect
data: [[0,1],], // Coordinates of the point, normally you'd have several
// points listed here...
points: {
show:true,
fill:true,
radius: 2, // Here we set the radius of the point (or rather, all points
// in the data series which in this case is just one)
fillColor: "rgba(255,140,0,1)", // Bright orange :D
}
},
/* Insert more points here */
];
There is a bubble chart available for flot here
Note that you need to scale your bubbles size yourself if you don't want them to coverup the graph. Documentation is here.
To use it, add the following at the beggining of your html page:
and call it from a json result or any data object like in this sample:
$.getJSON('myQuery.py?'+params, function(oJson) {
// ... Some validation here to see if the query worked well ...
$.plot('#myContainer',
// ---------- Series ----------
[{
label: 'Line Sample',
data: oJson.lineData,
color: 'rgba(192, 16, 16, .2)',
lines: { show: true },
points: { show: false }
},{
label: 'Bubble Sample',
data: oJson.bubbleData, // arrays of [x,y,size]
color: 'rgba(80, 224, 80, .5)',
lines: { show: false },
points: { show: false },
},{
label: 'Points sample',
data: oJson.pointsData,
color: 'rgba(255, 255, 0, 1)',
lines: { show: false },
points: { show: true, fillColor: 'rgba(255, 255, 0, .8)' }
},{
...other series
}],
// ---------- Options ----------
{ legend: {
show: true,
labelBoxBorderColor: 'rgba(32, 32, 32, .2)',
noColumns: 6,
position: "se",
backgroundColor: 'rgba(224, 224, 224, .2)',
backgroundOpacity: .2,
sorted: false
},
series: {
bubbles: { active: true, show: true, fill: true, linewidth: 2 }
},
grid: { hoverable: true, clickable: true } },
xaxis: { tickLength: 0 }
}); // End of plot call
// ...
}); // End of getJSON call
I tried to do the same thing with jqPlot which has some advantages but doesn't work with bubbles and other kind of series on the same graph. Also Flot does a better job to synchronise common axis scale with many series. Highchart does a really good job here (mixing bubble chart with other kind of series) but isn't free for us (government context).