Develop Reference

Chartjs: How can I group datasets closer if I have maxBarThickness set?

I have a chart where I've set a maxBarThickness on my axis. When the chart is populated with a lot of data, the datasets are close together, but when there are just a few data points, the datasets look wide apart.
I have tried setting categoryPercentage to a smaller percentage but when the chart is populated with a lot of data (or on page resize), the chart looks wrong. Any help would be appreciated.

According to this github issue you cannot change the space between bars if you decide to set a barThickness (I assume it does not work when maxBarThickness is set either but I might be wrong, if so I'll delete this answer)
According to the previous link, you have two solutions:
If you want to keep your bar thickness (answer to the github issue):
If you don't want to stretch out the bar to fill the extra space, you have to reduce the width of the canvas.
Otherwise you could set a barPercentage and a categoryPercentage on your chart, without a barThickness or a maxBarThickness:
scales: {
xAxes: [{
categoryPercentage: 0.8,
barPercentage: 0.9
}]
},
Those are the default values.
Related questions :
Chart.js Bar Chart: How to remove space between the bars in v2.3?
CharJS 2.5.0 - How to remove space between bars
Reduce space between ticks in horizontal bar-chart chartJS

Highcharts: Add ONE custom label to yAxis

I'm using highcharts and I know that the yAxis labels are automatically generated.
The thing is I've got this 3D graph in which apart from the data, there's a fixed 'goal' line on which we compare which data set is over or under it.
Since 3D graphs don't render lines very well, I used a plotLine and it works marvelous. The problem comes when I try to show how much this 'goal' is, because even though it's at the right position, it would be nice to display this goal amount.
What I want to do is display at the left of the graph the value of this line, so that whoever sees it is able to know how much the goal is for that particular data set.
Here's a screenshot of the graph, and circled the place I want to add the custom label:
Graph screenshot
Inside the red circle is where I want to add this custom string (which should be a percentage number).
I appreciate any help you guys can provide. Thanks!

You should be able to use renderer.text for adding custom text in your chart.
http://api.highcharts.com/highcharts/Renderer.text
load: function() {
var chart = this,
yAxis = chart.yAxis[0],
plotLine = yAxis.plotLinesAndBands[0],
pLPath = plotLine.svgElem.d;
chart.renderer.text('CUSTOM LABEL', parseFloat(pLPath.split(' ')[7]) - 100, parseFloat(pLPath.split(' ')[8])).addClass('cT').attr({
fill: 'red'
}).add();
},
In the code above I am using plotLine's path.
Live example how your chart may work:
http://jsfiddle.net/0hyaevax/2/

Start graph rendering after left sided labels in Highstock

In my highstock charts i required label on the left side of the graphs. When i used opposite: false + align: left for labels they are positioned above graph. But i want to start graph rendering after labels ends.
Left side labels without required graph render
I saw solution for my problem in Highcharts not in highstock some time before. But now i cant find it to show what exactly i need
Expected result
Thanks in advance

OK, so you want the labels inside the plot area.
You can do this by adding
labels: {
align: 'left',
x: 0
}
to your yAxis properties.
This moves the starting point of the labels to the axis line, and extends the labels to the right from that point. If you want them pushed further inside, just increase x.
The problem that you'll run into is that the plot will not respect the label placement - your line will still start at the same point, as if the labels weren't there.
Normally, you could just use the minPadding setting on the xAxis to increase the space for the labels, but this doesn't work in the case of the navigator, as explained here:
http://api.highcharts.com/highstock/xAxis.minPadding
When the axis' min option is set or a min extreme is set using axis.setExtremes(), the minPadding will be ignored
I am sure there is some work around for this problem, but I do not have the solution currently.
Updated fiddle:
http://jsfiddle.net/d6mre68v/

Plot line is hiding behind trend in highcharts and movement of plotline is become very hindrance when loaded with very large data sets

Hi all I am using high stock to visualise my data. In that plot line is hiding behind the trend.is there is any way to show the plot line above the trend. and also movement of plot line become hindrance when the chart is loaded with large data sets.
I have attached image for reference. Here plot line is hiding behind the trend.

You should use the zIndex option of plotLines to solve this problem.
yAxis: {
plotLines: [{
color: '#FF0000',
width: 2,
value: 80,
zIndex: 5
}]
}
You can see the live example in this jsFiddle.

Highcharts Pie chart datalabels cut off/ positioning

I'm attempting to use a highcharts in conjunction with Bootstrap. The pie chart is placed inside a column of 6 for example, so it takes up half the page. What has been happening is the datalabels are too long and so are being cropped out of the containing div.
A fix that has been proposed for this is to set a width on the datalabels.
like so:
pie: {
size: '60%',
allowPointSelect: true,
dataLabels: {
style:{
width:100
color:'black'
}
}
}
}
This works flawlessly for Chrome and mozilla, the width is set and the position of the datalabel changes so its all drawn closer to the pie chart. But when testing in IE8, (and I have to account for it unfortunately) the width is set, but it appears that the position of the datalabel is not changing, so I get even less of the data label visible on the screen.
I'll try get a jsfiddle or a screenshot up shortly so you can see what I mean, but initially I was just seeing if anyone had come across this issue before, or if there's a simple fix I am just missing.
Jsfiddle
I've commented out the width in the plot options so you can see what's happening.
When I uncomment the width, it renders perfectly in Chrome and mozilla. But in IE8, the position of the label doesn't change, so the left labels end up far away from the pie chart and still cropped.