how to use double click get the Category, name, y of a line of a line chart?
i tries use customEvents plugin.
but i don't know get those data in line chart
in the column chart, i use below code is okay.
series: [{
name: 'John',
data: [5, 3, 4, 7, 2],
point: {
events: {
dblclick: function(e) {
var c = this.point.category;
var y = this.point.options.y;
var n = this.point.series.name;
}
}
}
}
I updated the plugin, so please check if all works as you expect.
Related
I am fetching data from an endpoint
I display the data in a highchart
There are several indicators that can be selected. For each of them another yAxis is added below the main one.
My series data are of this format :
series: [
{
data: [],
id: 'prices',
step: this.hasStep,
name: this.$props.title,
fillColor: 'rgba(127,183,240,0.2)',
},
{
visible: false,
type: 'column',
id: 'volume',
name: 'Volume_hardcoded',
//linkedTo: 'prices',
data: this.volumeSeries,
},
],
I save the data in the following way (don't pay attention in the logic, it works fine):
if (this.selectedTimeSpan.tickInterval === 1) {
for (let i = 0; i < prices.length; i++) {
let xData = null;
this.selectedTimeSpan.getIntradayData
? (xData = Math.floor(new Date(prices[i].time).getTime()))
: (xData = Math.floor(new Date(prices[i].date).getTime()));
priceSeries[i] = {
x: xData,
open: prices[i].first,
high: prices[i].high,
low: prices[i].low,
close: prices[i].last,
y: prices[i].last,
volume: prices[i].tradingVolume,
};
this.volumeSeries[i] = {
x: xData,
y: prices[i].tradingVolume,
};
}
} else {
let j = 0;
for (
let i = 4;
i < prices.length;
i += this.selectedTimeSpan.tickInterval
) {
priceSeries[j] = {
x: Math.floor(new Date(prices[i].date).getTime()),
open: prices[i].first,
high: prices[i].high,
low: prices[i].low,
close: prices[i].last,
y: prices[i].last,
volume: prices[i].tradingVolume,
};
this.volumeSeries[j] = {
x: Math.floor(new Date(prices[i].date).getTime()),
y: prices[i].tradingVolume,
};
j++;
}
}
When I select these indicators (they are based on the volume), I am getting this result.(You can see a blank space below the main chart.) Instead when i swap to OHLC or candlestick my main series (series[0]) it looks works fine and it looks like this. Any idea why is that happening? I haven't touched the tooltip settings at all (in case it was there a problem). I am struggling 2 days now with it can't really figure it out. Any help would be appreciated a lot. If you need more information feel free to comment so I can provide. Thanks in advance. Chris.
Fixed, there's a flag that can be used called usedOhlcData in series object. (series[0] in my case]. We just set it to true.
series:[{
data:[],
useOhlcData:true,
...}
,{
...
}]
I'm using Highcharts and initializing the data using;
var graph = Highcharts.chart('container', {
................
series: [{
color: 'red',
data: [[5, 2], [800, 2], [801, 1],[802, 3],[803, 2],[804, 2],[1200, 3]]
},
.............
}
The problem I have is when I want to add more data dynamically, after rendering the initial chart.
In this case I'm using the update;
graph.update(
{
series: [{
color: 'blue',
data: [[100, 2], [101, 2], [102, 1] ]
},
});
And this works but it replaces the entire data set.
So, how should I use the update() function to add points and not replace them?
I saw people are using other functions such as addPoint() and setData() but I couldn't make them work properly...
Thanks in advance
Gus
Refer to this live demo: http://jsfiddle.net/kkulig/opr4Lgpe/
I add all the points in a loop. redraw argument (second one) of the addPoint function is set to false - there's no need to redraw the chart after each addition. The redraw is performed only once in the end.
var chart = Highcharts.chart('container', {
series: [{
data: [1, 2]
}]
});
var pointsToAdd = [4, 5, 6, 6, 7];
pointsToAdd.forEach(function(p) {
chart.series[0].addPoint(p, false);
});
chart.redraw();
API reference:
https://api.highcharts.com/class-reference/Highcharts.Series#addPoint
I am using live random data in my chart . Here i want to display current feed value in right side of chart which will travel along with chart's last point.
I am trying to display tootip in last point which series will added dynamically. But i am unable to add tootip to last point alone.
Can anyone help me to achieve this.
Here is jsfiddle and what i am trying is
To show a tooltip you could use toolip.refresh(point).
Example: http://jsfiddle.net/a6pshutt/7/
...
setInterval(function () {
var x = (new Date()).getTime(),
y = Math.random();
len = series.data.length;
series.addPoint([x,y], false, true);
series2.data[0].update([x,y]);
tooltip.refresh(series2.data[0]); // <----------here
}, 1000);
...
To show a dataLabel you could enable it for the scatter point in your scatter series.
Example: http://jsfiddle.net/83kp2d4t/
...
events: {
load: function () {
var tooltip = this.tooltip,
series = this.series[0],
len = series.data.length;
this.addSeries({
id: 'end point',
type: 'scatter',
marker: {
enabled:true,
symbol:'circle',
radius:4,
fillColor:'white',
lineColor: 'black',
lineWidth:2
},
dataLabels:{
enabled: true // <----------here
},
data: [[
series.data[len - 1].x,
series.data[len - 1].y
]]
});
...
I am using highcharts for statistical data displaying. I want to display , on the stack label , the average of all the values .
Below is what i am doing but i cant seem to get it right :
yAxis: {
min: 0,
title: {
text: 'Task'
},
stackLabels: {
style: {
color: 'black'
},
enabled: true,
formatter: function() {
return (this.axis.series[1].yData[this.x]).toPrecision(2) + '%';
}
}
},
The above only takes the last value on the stack and shows the percentage. For instance , if the last value is 50 , the above displays 50% as the stack value . I want to take an average of all the values. Any help would be appreciated.
If you want to show any stack's percentage mean if your stacked column has two stack A-5 and B-10 , then the % of B in column is 66% and % of A is 33%. If you want to show that use following in formatter function ( refer This Fiddle Link)
formatter: function() {
return (this.axis.series[1].yData[this.x] / this.total * 100).toPrecision(2) + '%';
}
Updating as per OP 's comment Refer Working fiddle here
Use following code : Make your data in a variable and calculate the sum
var seriesData = [{
name: 'Incomplete',
data: [1, 3, 4, 7, 20]
}, {
name: 'Complete',
data: [3, 4, 4, 2, 5]
}];
var total = 0;
$.each(seriesData,function(item){
$.each(seriesData[item].data,function() {
total += this;
});
});
And then use following in stacklabel formatter :
formatter: function() {
return ( this.total/ total * 100).toPrecision(2) + '%';
}
series:seriesData
hope it helps :)
This doesn't seem to be as easy as it should be.
I would accomplish this by pre-processing the data to generate an array of averages, and then referencing that array from the stackLabels formatter function.
Example, build the averages (assumes array 'data' with sub array for each series data values):
var sum = 0;
var averages = [];
var dataLen = data.length;
$.each(data[0], function(x, point) {
sum = 0;
for(var i = 0; i < dataLen; i++) {
sum += data[i][x];
}
averages.push(sum/dataLen);
})
And then in the formatter:
yAxis : {
stackLabels: {
enabled: true,
formatter: function() {
return Highcharts.numberFormat(averages[this.x],2);
}
}
}
Example:
http://jsfiddle.net/jlbriggs/vatdrecb/
If I could find a way to get a reliable count of the points in each stack, you could just use
return this.total/countOfPoints;
in the formatter without needing to build an array, but I can't seem to reliably get that count.
I am new to Highcharts.
I have a line chart. Here is the categories:
["9/7/14", "9/8/14", "9/9/14", "9/10/14", "9/11/14", "9/12/14", "9/13/14", "9/14/14", "9/15/14", "9/16/14", "9/17/14", "9/18/14", "9/19/14", "9/20/14", ...]
Here is the data series:
[1, 4, 0, 2, 1, 1, 1, 5, 3, 1, 0, 0, 6, 8, ... ]
I added zoom to my chart, very similar to this jsfiddle demo: http://jsfiddle.net/348sh/3/
chart: {
renderTo: 'container',
zoomType: 'x'
},
I would like to get the total of only those Y values within the zoomed-in window, not the total of the entire data series. For this, I need to capture what values are included in the x axis in the zoomed window. So I added the following based on my research:
xAxis: {
type: 'line',
events: {
setExtremes: function(event) {
console.log(event.min);
console.log(event.max);
}
}
}
However, the values for event.min or event.max are numbers such as 3.6552511415525117, 7.10730593607306. I have no way to know which x values are included in the zoomed window. How can I find which x values are included? Any way to get the start and end x values ?
Thanks!
I did further research. I notice that I may have answered my question already in my question. It turns out that the numbers I gave in my question are very helpful, not clueless. Math.ceil(min) and Math.floor(max) are just the beginning and ending index of the data points in the data series that are show up in the zoomed window. The another thing to note is to use afterSetExtremes event. This is the moment where chart finalizes the starting and ending points in the X axis. So the complete answer is:
xAxis: {
type: 'line',
events: {
afterSetExtremes: function(event) {
var start = Math.ceil(event.min);
var end = Math.floor(event.max);
}
}
}
I am new to Highcharts and love to get corrected if I am wrong.
Cheers.
This may help you . Try this fiddle : http://jsfiddle.net/7kv9a25r/ .
chart: {
events: {
selection: function (event) {
var text,
label;
if (event.xAxis) {
text = 'min: ' + Highcharts.numberFormat(event.xAxis[0].min, 2) + ', max: ' + Highcharts.numberFormat(event.xAxis[0].max, 2);
} else {
text = 'Selection reset';
}
label = this.renderer.label(text, 100, 120)
.attr({
fill: Highcharts.getOptions().colors[0],
padding: 10,
r: 5,
zIndex: 8
})
.css({
color: '#FFFFFF'
})
.add();
setTimeout(function () {
label.fadeOut();
}, 1000);
}
},
zoomType: 'x'
},