Good afternoon, I'm putting together a chart that uses Highcharts stackLabels, it's exactly the same as this: JSFiddle however I do not want it to display the sum of the column values, I want it to appear item by item one on top of the other, same as the print I simulated below:
In order to set your stackLabels as you expecting, you need to use stackLabels.formatter function to calculate the labels values manually.
Next thing you've to do is make a little shifting on the labels. You are able to do it by stackLabels.y field.
At the end, don't forget about the stackLabels.useHTML parameter set equal to true. It makes the <span> and </br> elements will appear correctly. Please take a look at code below:
yAxis: {
stackLabels: {
style: {
color: 'red'
},
enabled: true,
useHTML: true,
formatter: function() {
var firstLabel = Math.round((this.points[0][1] - this.points[0][0]) * 10) / 10,
secondLabel = this.points[0][0]
return `<span>${firstLabel}</span></br>
<span>${secondLabel}</span>`
},
y: -15
}
}
You can read more about parameters mentioned above here:
https://api.highcharts.com/highcharts/yAxis.stackLabels.formatter
https://api.highcharts.com/highcharts/yAxis.stackLabels.y
https://api.highcharts.com/highcharts/yAxis.stackLabels.useHTML
Live example: http://jsfiddle.net/r01nkgyn/
Related
I used area range Highcharts but facing certain issues as:
For X-axis, the chart doesn't start with an initial point rather shows incorrect start tick value(i.e. 2020) instead of 2019.
Need to show label values for last data point only for each series, attached image below for reference
Could someone please help me with what do I do to resolve my issues.
Thanks in advance!
For the 1st issue, I tried changing the 'pointStart' attribute value for plotOptions->series but didn't work.
"plotOptions": {
"series": {
"pointStart": 1546300800000
}
}
Here is JSFiddle link of the chart containing code:
The first issue can be resolved by setting xAxsi.tickInterval = plotOptions.series.pointInterval:
xAxis: {
type: "datetime",
tickInterval: 31536000000
...
}
The second issue can be resolved by providing labels formatter callback function that will return only the last series point value. Also, other dataLabels properties have to be set properly (like align, overflow, etc). Check demo and code posted below.
Code:
dataLabels: {
enabled: true,
align: 'left',
verticalAlign: 'middle',
padding: 8,
allowOverlap: true,
overflow: 'allow',
crop: false,
formatter: function() {
var point = this.point,
series = this.series;
if (series.data.length === point.index + 1) {
return '$' + this.y.toFixed(1);
} else {
return '';
}
}
}
Demo:
https://jsfiddle.net/BlackLabel/2xLevj6y/
API reference:
https://api.highcharts.com/highcharts/xAxis.tickInterval
https://api.highcharts.com/class-reference/Highcharts.DataLabelsOptionsObject#formatter
https://api.highcharts.com/class-reference/Highcharts.DataLabelsOptionsObject#align
https://api.highcharts.com/class-reference/Highcharts.DataLabelsOptionsObject#overflow
Following is my resultant chart
Here the value of legends Happy and Very Happy is 0, hence it is overlapping each other and unable to read. So, How can I hide these values and strike through the legends while loading itself like in the below image? And yes, it is a dynamically loaded chart.
Link - Reference Pie Chart
Thanks in advance.
I am posting this answer hoping that, it will be helpful for someone later. You can also post a better solution if found.
After some deep diving into the library the files, I realised that is there are no direct answers to my question. But we can achieve that by emptying the label text in case of 0 data values.
For that, we must edit the chart options as follows,
public pieChartOptions: ChartOptions = {
responsive: true,
legend: {
position: 'top',
},
plugins: {
datalabels: {
formatter: (value, ctx) => {
const label = ctx.chart.data.labels[ctx.dataIndex];
if (ctx.dataset.data[ctx.dataIndex] > 0)
return label + " : " + ctx.dataset.data[ctx.dataIndex];
else
return "" // retun empty if the data for label is empty
},
}
},
showLines: true,
spanGaps: true,
cutoutPercentage: 1,
rotation: 15, // rotate the chart
};
Here in the function returns empty value in case the data for the corresponding label is 0. Also I rotate the chart 15deg to make the labels horizontal align in most cases.
Reference - Chart.js documentation
Hence I achieved a better view to the user and the overlapping issues are resolved. Thanks.
For my graph, I have a single y-axis (y1), and I am trying to add a second axis (y2) which is a scaled version of y1.
Simply put, is it possible to do a graph like this. But I want a second axis, with the same scaling ratio, but in different units (i.e. that is multiplied by some k).
I have tried to just change the label on the yAxis:
` labels: {
format: '$ {value* price} ',
style: {
color: Highcharts.getOptions().colors[0]
}
},`
But this hacky way does not seem to work for me.
In my case, I have a graph of percent change on y1, is it possible to put the price on y2?
I do not want to add another set of lines since I am already using 10, which would mean I would need 20 lines in total
Any help would be greatly appreciated!
You need to link the second axis to the first by linkedTo property and use formatter function to display some custom scale:
yAxis: [{}, {
opposite: true,
labels: {
formatter: function() {
return this.value * 1000
}
},
linkedTo: 0
}]
Live demo: http://jsfiddle.net/BlackLabel/j83pghta/
API Reference:
https://api.highcharts.com/highcharts/yAxis.linkedTo
https://api.highcharts.com/highcharts/yAxis.labels.formatter
I need to be able to add some custom info to the pie.info.contentsFunction in Zoomcharts. I have multiple charts on the page, each one created like so...
var pc = new PieChart({
pie: {
innerRadius: 0.5,
},
container: chartContainer1,
area: { height: 500 },
data:chartData,
toolbar: {
"fullscreen": true,
"enabled": true
},
info: {
contentsFunction: boomChartTT
}
});
In the "boomChartTT" function I need to know what chart is being hovered upon. I'd like to be able to do something like this...
info: {
contentsFunction: boomChartTT(i)
}
...where 'i' is the index of the chart.
The reason I need to know the chart index is because I have some other data saved in an indexed array for each chart. The index of the chart matches the index of the data.
EXAMPLE: if user hovers on a slice in chart2 I'd want to pass '2' to the boomChartTT function so I can access the totals data for that chart (say, totalsData[2]).
I've done this in the past with other chart libraries by simply adding a data attribute to the chart container to give me the index like so...
<div id="chartContainer1" data-index="1"></div>
...and then I'm able to access the chartContainer from the hover function (contentsFunction) and then get that index.
I don't want to add the totals data to the actual chart data because I'd have to add it to each slice which is redundant.
Is there a way to do this?
Please let me know if my post is unclear.
EDITED TO ADD:
I don't think it matters but here is the boomChartTT function:
function boomChartTT(data,slice){
var tt="<div class=\"charttooltip\">";
if(data.name==="Others" || data.name==="Previous"){return tt+=data.name+"</div>";}
//var thisData=dataSearch(totalsData[i],"REFERRINGSITE",data.id);
tt+="<h5 class=\"strong\">"+data.id+"</h5>"+oHoverTable.render(thisData)+"</div>";
return tt;
}
The commented line is where I would need the index (i) to to get the correct totalsData.
SOLVED. I simply added "chartIndex" to the data like so...
for(var i=0;i<r.length;i++){
var thisDataObj ={
id:r[i].REFERRINGSITE,
value:r[i].PCTOFSALES,
name:r[i].REFERRINGSITE,
chartIndex: arguments[1],//<----- arguments[1] is the chart index
style: { expandable: false, fillColor: dataSearch(dataRSList,"REFERRINGSITE",r[i].REFERRINGSITE)[0].COLOR }
};
chartData.preloaded.subvalues.push(thisDataObj);
}
Then in the boomChartTT function...
function boomChartTT(data,slice){
var tt="<div class=\"charttooltip\">";
if(data.name==="Others" || data.name==="Previous"){return tt+=data.name+"</div>";}
var thisData=dataSearch(totalsData[data.chartIndex-1],"REFERRINGSITE",data.id);
tt+="<h5 class=\"strong\">"+data.id+"</h5>"+oHoverTable.render(thisData)+"</div>";
return tt;
}
I feared that adding custom fields to the chart data would break the chart (which I believe I've experienced with other libraries). So, there you go.
I am using Primefaces 6 for my companys charting needs, which relies on jQplot.
For a project, I am trying to overlay a line chart on a stacked bar chart with negative values, to obtain something like this:
The problem is that when I try to add a linechartseries to the same model as the two barchartseries , the linechart becomes a part of the stack when setting setStacked(true); on the model, because Primefaces seems to not allow individual disabling of stacking on series, only per model. So I end up with this when rendering the chart with
<p:chart type="bar" model="#{backingBean.cartesianChartModel}"/>
After some investigation I have notoced that jQplot is capable of disabling Stacking on individual series by passing disableStack : true in the JS options, so the question is if it's posssible to override this in some way on the rendered page,either via PF or via some JS hack? I feel that using the extender only apples to the entire model?
Related issues: Disable individual stacking
By pouring through the documentation I found a solution to the problem, if not the question:
It seems that Primefaces allows for individual series to be excempt from the stack in the series creation in this version, by passing
LineChartSeries.setDisableStack(true);
Simple as that.
I guess it may be possible. I used the extender functionality for some jqPlot hacks in the past.
In my case, for example, I had a Donut Chart defined with an extender function as follows:
private void createDonutModel() {
donutModel = new DonutChartModel();
donutModel.setLegendPosition("s");
donutModel.setLegendPlacement(LegendPlacement.OUTSIDE);
donutModel.setSliceMargin(4);
donutModel.setDataFormat("value");
donutModel.setShadow(false);
donutModel.setExtender("donutExtender");
donutModel.setSeriesColors("B81C40, FFA600, 79B54A");
}
The corresponding javascript was doing some changes to the jqPlot:
/**
* Customized jqPlot JQuery layout of the Donut Chart for Status Dashboard.
*/
function donutExtender() {
this.cfg.seriesDefaults = {
// make this a donut chart.
renderer:$.jqplot.DonutRenderer,
rendererOptions:{
thickness: 26,
ringMargin: 0,
fill: true,
padding: 0,
sliceMargin: 4,
// Pies and donuts can start at any arbitrary angle.
startAngle: -90,
showDataLabels: false,
// By default, data labels show the percentage of the donut/pie.
// You can show the data 'value' or data 'label' instead, or 'percent'
dataLabels: 'value',
shadow: false
}
}
this.cfg.gridPadding = {
top: 0, right: 0, bottom: 0, left: 0
}
this.cfg.legend = {
show: false
}
this.cfg.grid = { drawBorder: false,
shadow: false,
background: "transparent"
};
}
So you may try something like this in your case ?
Leave the extension configuration of your series empty, except for the one you are interested in...
function chartExtender() {
this.cfg.series = [
{ //...
},
{ // ...
},
{
disableStack: true
}
]
}
Worth having a shot ...