Develop Reference

Highcharts Custom SVG Marker Symbol is Shaped Different in Legend

the custom SVG marker symbol I have drawn is rendered differently in the legend than in the chart. I have drawn the marker that I need for the chart but in the legend, the symbol has a thin line to the left.
I have attached a picture below and will include the code, I have spent too much time on this and don't have anyone to ask on this topic. If anyone can help me out, it would be greatly appreciated.
function renderChart(data, startRange, endRange) {
// Create custom marker
Highcharts.SVGRenderer.prototype.symbols.lineBar = function (x, y, w, h) {
return ['M', x + w / 2, y + h / 2, 'L', x + w + 10, y + h / 2, 'z'];
};
if (Highcharts.VMLRenderer) {
Highcharts.VMLRenderer.prototype.symbols.lineBar = Highcharts.SVGRenderer.prototype.symbols.lineBar;
}
var chart = Highcharts.chart({
chart: {
renderTo: 'system-load-scheduler',
type: 'line',
},
navigation: {
buttonOptions: {
enabled: false
}
},
title: {
text: ''
},
yAxis: {
min: 0,
title: {
text: 'Tasks'
},
labels: {
style: {
color: 'blue'
}
},
categories: generateCategories(data),
},
xAxis: {
type: 'datetime',
dateTimeLabelFormats: {
day: '%b %d'
},
title: {
text: 'Date'
}
},
tooltip: {
headerFormat: '<b>{series.name}</b><br>',
pointFormat: 'Scheduled {point.x:%b. %e} at {point.x:%l:%M%P}'
},
plotOptions: {
line: {
marker: {
enabled: true
}
},
series: {
cursor: 'pointer',
stickyTracking: false,
marker: {
states: {
hover: {
radiusPlus: 0,
lineWidthPlus: 1,
halo: {
size: 0
}
}
}
},
states: {
hover: {
halo: {
size: 0
}
}
}
}
},
legend: {
enabled: true,
symbolPadding: 20
},
series: generateSeries(data, startRange, endRange)
});
chart.yAxis[0].labelGroup.element.childNodes.forEach(function (label) {
label.style.cursor = 'hand';
label.onclick = function () {
var idx = ctrl.allTaskNames.indexOf(this.textContent);
renderTaskInfo(ctrl.data[idx]);
ctrl.scheduler.taskIdx = idx;
ctrl.backService.saveObject(CTRL_DASHBOARD_SCHEDULER_STR, ctrl.scheduler);
};
});
return chart;
}

You can erase the line with just some CSS code
.highcharts-legend .highcharts-graph {
display:none;
}
Fiddle

Change highcharts data label position

This is my jsfiddle link http://jsfiddle.net/bb1m6xyk/1/
I want that all my labels like my data: 0 etc are positioned at the base and in center of each zone.
$('#container').highcharts({
chart: {
type: 'area'
},
yAxis: {
title: {
text: 'Percent'
}
},
plotOptions: {
area: {
enableMouseTracking: false,
showInLegend: false,
stacking: 'percent',
lineWidth: 0,
marker: {
enabled: false
},
dataLabels: {
className:'highlight',
enabled: true,
formatter: function () {
console.log(this);
return this.point.myData
}
}
}
},
series: [{
name: 'over',
color: 'none',
data: overData
}, {
id: 's1',
name: 'Series 1',
data: data,
showInLegend: true,
zoneAxis: 'x',
zones: zones
}]
});
Is this possible? I tried it using className on dataLabels but it doesn't take that into effect.
Any help is appreciated.

There are a few ways to render labels on a chart.
The Renderer
Live example: http://jsfiddle.net/11rj6k6p/
You can use Renderer.label to render the label on the chart - this is a low level approach but it gives you full control how the labels will be rendered. You can loop the zones and set x and y attributes of the labels, e.g. like this:
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function drawLabels() {
const zonesLabels = this.zonesLabels
const series = this.get('s1')
const { yAxis, xAxis } = series
const y = yAxis.toPixels(0) - 20 // -20 is an additional offset in px
series.zones.reduce((prev, curr, i) => {
if (curr.value !== undefined) {
const x = (xAxis.toPixels(prev.value) + xAxis.toPixels(curr.value)) / 2
if (!zonesLabels[i]) {
zonesLabels.push(
this.renderer.label(labels[i], x, y).add().attr({
align: 'center',
zIndex: 10
})
)
} else {
zonesLabels[i].attr({ x, y })
}
}
return curr
}, { value: series.dataMin })
}
Then set the function on load - to render the labels, and on redraw - to reposition the labels if the chart size changed.
chart: {
type: 'area',
events: {
load: function() {
this.zonesLabels = []
drawLabels.call(this)
},
redraw: drawLabels
}
},
The annotations module
Live example: http://jsfiddle.net/a5gb7aqz/
If you do not want to use the Renderer API, you can use the annotations module which allows to declare labels in a chart config.
Add the module
<script src="https://code.highcharts.com/modules/annotations.js"></script>
Map zones to the labels config object
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function annotationsLabels() {
const zonesLabels = []
zones.reduce((prev, curr, i) => {
zonesLabels.push({
text: labels[i],
point: {
x: (prev.value + curr.value) / 2,
y: 0,
xAxis: 0,
yAxis: 0
}
})
return curr
}, { value: 0 })
return zonesLabels
}
Set the annotations options
annotations: [{
labels: annotationsLabels(),
labelOptions: {
shape: 'rect',
backgroundColor: 'none',
borderColor: 'none',
x: 0,
y: 0
}
}],
Data labels and a new series
Live example: http://jsfiddle.net/wpk1495g/
You can create a new scatter series which will not respond to mouse events and it won't be visible in the legend. The labels can be displayed as data labels.
Map zones to series points
const labels = ['l1', 'l2', 'l3', 'l4', 'l5']
function seriesData() {
const points = []
zones.reduce((prev, curr, i) => {
points.push( {
x: (prev.value + curr.value) / 2,
y: 50,
dataLabels: {
enabled: true,
format: labels[i]
}
})
return curr
}, { value: 0 })
return points
}
Set the series options in the chart config
, {
type: 'scatter',
enableMouseTracking: false,
showInLegend: false,
data: seriesData(),
zIndex: 10,
color: 'none',
dataLabels: { style: { textOutline: false }, x: 0, y: 0 }
}
Output

HighCharts inside of a javascript function

I'm trying to draw a 3d box after a user has selected some data from the server.
When I put the highcharts inside of a js function, it throws some errors.
My code is:
Chart It<br/>
<div id="container" style="height: 400px"></div>
<script>
var chart;
function chart3d() {
// Give the points a 3D feel by adding a radial gradient
Highcharts.getOptions().colors = $.map(Highcharts.getOptions().colors, function (color) {
return {
radialGradient: {
cx: 0.4,
cy: 0.3,
r: 0.5
},
stops: [
[0, color],
[1, Highcharts.Color(color).brighten(-0.2).get('rgb')]
]
};
});
// Set up the chart
chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
margin: 100,
type: 'scatter',
options3d: {
enabled: true,
alpha: 10,
beta: 30,
depth: 250,
viewDistance: 5,
fitToPlot: false,
frame: {
bottom: {
size: 1,
color: 'rgba(0,0,0,0.02)'
},
back: {
size: 1,
color: 'rgba(0,0,0,0.04)'
},
side: {
size: 1,
color: 'rgba(0,0,0,0.06)'
}
}
}
},
title: {
text: 'Draggable box'
},
subtitle: {
text: 'Click and drag the plot area to rotate in space'
},
plotOptions: {
scatter: {
width: 10,
height: 10,
depth: 10
}
},
yAxis: {
min: 0,
max: 10,
title: null
},
xAxis: {
min: 0,
max: 10,
gridLineWidth: 1
},
zAxis: {
min: 0,
max: 10,
showFirstLabel: false
},
legend: {
enabled: false
},
series: [{
planeProjection: {
enabled: false,
},
lineProjection: {
enabled: 'hover',
colorByPoint: true
},
name: 'Reading',
colorByPoint: true,
data: darray
}]
});
// Add mouse events for rotation
$(chart.container).on('mousedown.hc touchstart.hc', function (eStart) {
eStart = chart.pointer.normalize(eStart);
var posX = eStart.pageX,
posY = eStart.pageY,
alpha = chart.options.chart.options3d.alpha,
beta = chart.options.chart.options3d.beta,
newAlpha,
newBeta,
sensitivity = 5; // lower is more sensitive
$(document).on({
'mousemove.hc touchdrag.hc': function (e) {
// Run beta
newBeta = beta + (posX - e.pageX) / sensitivity;
chart.options.chart.options3d.beta = newBeta;
// Run alpha
newAlpha = alpha + (e.pageY - posY) / sensitivity;
chart.options.chart.options3d.alpha = newAlpha;
chart.redraw(false);
},
'mouseup touchend': function () {
$(document).off('.hc');
}
});
});
}
</script>
This loads fine if I do not put it inside of the chart3d function. Is there a way to get this working. The error message I get is:
highcharts.js:10 Uncaught Error: Highcharts error #13: www.highcharts.com/errors/13
at Object.a.error (highcharts.js:10)
at a.Chart.getContainer (highcharts.js:256)
at a.Chart.firstRender (highcharts.js:271)
at a.Chart.init (highcharts.js:247)
at a.Chart.getArgs (highcharts.js:246)
at new a.Chart (highcharts.js:246)
at chart3d (graphingCustom.js:26)
at HTMLAnchorElement.onclick (VM599 :643)

As they say:
Highcharts Error #13
Rendering div not found
This error occurs if the chart.renderTo option is misconfigured so that
Highcharts is unable to find the HTML element to render the chart in.
You don't have a div with the id=container at the time you are calling the method.

Highchart: is it possible to change the font of the label in Highchart via a click of a button?

Link to JFiddle: http://jsfiddle.net/z24ysp8m/3/
Here is the code in concern:
$(function() {
var chartData = [-5, 5, -10, -20];
var timeStamps = [];
var index = 1;
var pWidth = 25;
$('#b').click(function(){
timeStamps.push(new Date());
var buttonB = document.getElementById('b');
buttonB.disabled = true;
/* if(index == 1){
$('#container').highcharts().xAxis[0].labels.style = {"color":"#6D869F","fontWeight":"bold"};
}*/
if(index <= chartData.length){
$('#container').highcharts().series[0].remove();
$('#container').highcharts().addSeries({pointPlacement: 'on', data: [chartData[index - 1]],
pointWidth: pWidth});
$('#container').highcharts().xAxis[0].setCategories([index]);
setTimeout(function(){index++;}, 2000);
}
if(index < chartData.length){
setTimeout(function(){buttonB.disabled = false;}, 1500);
}else{
setTimeout(function(){buttonB.style.visibility="hidden";}, 1500);
}
if(index == chartData.length - 1){
setTimeout(function(){document.getElementById('b').innerHTML = 'Lasst Period';}, 1500);
}
console.log(timeStamps);
})
// $(document).ready(function () {
Highcharts.setOptions({
lang: {
decimalPoint: ','
},
});
$('#container').highcharts({
chart: {
type: 'column',
width: 170,
marginLeft: 74,
marginRight: 16,
marginBottom: 60
},
title: {
text: ''
},
colors: [
'#0000ff',
],
xAxis: {
title: {
text: ''
// offset: 23
},
gridLineWidth: 1,
startOnTick: true,
tickPixelInterval: 80,
categories: ['Filler'], // used only to make sure that the x-axis of the two charts
// are aligned, not shown on the chart via setting the font color to white
min:0,
max:0,
labels: {
style: {
color: 'white'
}
}
},
yAxis: {
title: {
text: 'Value'
},
min: -20,
max: 20,
tickPixelInterval: 40
},
plotOptions: {
series: {
animation: {
duration: 1000
}
}
},
credits: {
enabled: false
},
tooltip: {
formatter: function () {
return Highcharts.numberFormat(this.y, 2) + '%';
}
},
legend: {
enabled: false
},
exporting: {
enabled: false
},
series: [{
data: [],
pointWidth: pWidth
}]
});
// });
});
I want that the x-axis has no label when the page is loaded (The reason why I added in a filler text with white font is due to the fact that I don't want the size of the chart change upon click of a button). And upon the click of button, the label should be consecutively 1, 2, 3, 4...
Is there anyway around it except for setting marginBottom (which is not very precise)?

You may use .css() method for changing fill color of your text label.
Here you can find information about this method:
http://api.highcharts.com/highcharts#Element.css
Highcharts.each($('#container').highcharts().xAxis[0].labelGroup.element.children, function(p, i) {
$(p).css({
fill: 'red'
});
});
And here you can find simple example how it can work:
http://jsfiddle.net/z24ysp8m/6/

jqplot zoom function is not working

I want to visualize some timeseries data in the browser with jqplot. My problem is, that the x-axis values overlay and aren't readable.
Therefore, the zoom function would be very useful. But it doesn't work.
Please have a look at the fiddle, it doesn't run on firefox, just on google chrome:
http://jsbin.com/onufih/9/edit
Here's my code:
function getTicks() {
var ticks = [];
for (var i = 0; i < data.length; i++) {
var item = data[i];
var dateStr = item[0];
ticks.push(dateStr);
}
return ticks;
}
var overviewChart = $.jqplot('overviewChart', [data], {
title: 'Rotated Axis Text',
axes: {
xaxis: {
renderer: $.jqplot.DateAxisRenderer,
rendererOptions: {
tickRenderer: $.jqplot.CanvasAxisTickRenderer
},
ticks: getTicks(),
tickOptions: {
formatString: '%#m/%#d/%y - %#H h - %#M m - %#S s',
fontSize: '10pt',
fontFamily: 'Tahoma',
angle: -40
}
},
yaxis: {
rendererOptions: {
tickRenderer: $.jqplot.CanvasAxisTickRenderer
},
tickOptions: {
fontSize: '10pt',
fontFamily: 'Tahoma',
angle: 30
}
}
},
series: [{
lineWidth: 4,
markerOptions: {
style: 'square'
}
}],
cursor: {
zoom: true,
looseZoom: true
}
});
}

You need to add show: true to your cursor, as in this example.

It's not working because you have specified the "ticks" option. I'm having the same issue. Seems to me this should work as expected even when I set the ticks (as an initial "un-zoomed" value).