I need to add graphic annotations in a chart on the date (x) axis, so I added a new series with a constant value of 0 (x: date, y: 0), with custom image markers. Annotations look like this:
The problem with this approach is that the constant 0 value in the annotation series is messing around with the automatically placed ticks (on the right), which then stretch the whole Y range from 0 onwards, instead of the min and max of other series, as it is by default. That drastically affects the display of other series, whose value are far away from 0, making them look less diverse.
Highcharts comes with an annotation module, bit I didn't find an option to pin it to the axis and use a different graphic.
Is it possible to either:
a) Prevent the annotation series to influence the Y axis ticks?
b) Make customized annotations on the X axis without adding new constant series?
The easiest solution here I think would be to create a new yAxis, and have your constant series use that yAxis. Like this:
yAxis: [{
...//original yAxis
}, {
visible: false //this hides all axis lines, ticks, and labels
}]
Then in the series, you would set:
series: [{
... //Real data series
}, {
yAxis: 1, //constant series
...
}]
Related
I have a categorical polar chart with 5 axes, and each axis has its own min/max range. I would like to configure both the axis labels and to add ticks to each individual axis.
The axis labels are drawn on the axis line itself, but I'd prefer them to be drawn slightly away from the line
There are no ticks on each axis, and I would like short ticks drawn on each axis line.
I've tried tinkering without success with the gridLine* and tick* y axis properties. Nothing seems to visually change when I do this, so I am guessing I'm barking up the wrong tree. Can I get tickmarks and better label positioning?
Here's a fiddle for this: https://jsfiddle.net/cfarmerga/cgrk96yh/
Use chart.parallelAxes.labels option to set x and y axis labels positions.
Example code:
chart: {
polar: true,
parallelCoordinates: true,
parallelAxes: {
gridLineWidth: 0,
labels: {
y: 25,
}
},
}
API Reference:
https://api.highcharts.com/highcharts/chart.parallelAxes.labels
There is no possibility to set ticks for the polar chart from the API options. You will need to draw them using Highcharts.SVGRenderer. Check the similar thread at Highcharts forum: https://www.highcharts.com/forum/viewtopic.php?f=9&t=45661
API Reference:
https://api.highcharts.com/class-reference/Highcharts.SVGRenderer
I'm able to create in Excel a chart where...
The data is in a different date frequency based on the x axis
Two different chart types - line over bars
So for example, I can have a bar chart on the primary x-axis / y-axis that is aggregated by year. Then another series as a line that changes on a daily basis. What allows the line to show up as a daily time series (raw values) is the option to turn on the secondary x-axis. With this on, the two time series can work off a different date frequency.
Is this possible in highcharts? I've only been able to find examples of where it's possible to enable the secondary y-axis but both time series is in the same date frequency
Yes. The method to add a second x axis is exactly the same as it is to add a secondary y axis - you just make the changes to the xAxis properties instead of the yAxis properties, and specify the xAxis for you series instead of specifying the yAxis.
Example:
xAxis: [{
}, {
opposite: true
}]
And:
series: [{
data: [...data...]
}, {
xAxis: 1,
type: 'line',
data: [...data...]
}]
Fiddle example:
http://jsfiddle.net/jlbriggs/ko7ton0w/
In the stacked bar shown below
the negative values are represented with the reference line on top, this seems to be redundant with the original axis present below, is there a way to actually show only one axis in the place of 0 marker?
You can set a parameter opposite as true.
xAxis:{
opposite:true
},
Example: http://jsfiddle.net/2s85hcbu/
You can also disable gridlines on yAxis
yAxis:{
gridLineWidth:0
},
Example: http://jsfiddle.net/2s85hcbu/1/
I am trying to set my X and Y axes to have set minimums, maximums and intervals. Easy enough according to the docs - and indeed I have had no problem working with Highcharts to date - in fact the complete opposite, it's an awesome, awesome tool. However, when I add errors bars to my line series', it seems to knock out the x-axis - http://jsfiddle.net/Su44W/
Simply changing to series' type to arearange (http://jsfiddle.net/46dsn/1), providing the same data points [x, low, high], the chart now respects my min, max and tickInterval on the x-axis. So this begs the question, is this a bug or and I doing something wrong?
From my understanding the errorbar causes the axis to consider itself part of a "column-like chart". That is, the points on the axis have a span. The result of this is that this piece of code is ran to prevent more ticks than there are points (found on line 7194 of the source):
// In column-like charts, don't cramp in more ticks than there are points (#1943)
if (axis.pointRange) {
axis.tickInterval = mathMax(axis.pointRange, axis.tickInterval);
}
I'm not exactly sure how this solves the problem, but in some way setting the pointRange of the errorbar series causes the axis to use that pointRange for the axis as well. I'm guessing it just uses the maximum point range of all series, or something similar. This means your specified tickInterval will be the "max" in the above mathMax-function. Like this:
{
name: 'Series 1 error bars',
data: [
[4,7.26,7.34],
[12,6.85,7.06],
[26,6.92,7.12]
],
linkedTo: ':previous',
color: "#013879",
zIndex: 0,
whiskerLength: 7,
type: 'errorbar',
pointRange: 0
}
Check this JSFiddle link for pointRange in action.
The negative effect that this will have is that the top and bottom line for your errorbars will have very short width. You can counter this by specifying a pointWidth for the series as well, as in this JSFiddle demonstration.
I need to add a new series to this chart which will allow me to highlight / shade a particular range of dates. It needs to be 100% height of the chart.
I was looking at using another area series, but I couldn't get it working as I wanted it given I have two existing area series on this chart.
I thought another series which had a 1 or 0 for the particular point to indicate if it should be highlighted or not?
{name: 'mydates',
color:'red',
fillOpacity: 0.3,
data: [0, 0, 0,1,1,1,1, 1, 1,1,0,0],
type:'area',
stacking: 'percent'
},
http://jsfiddle.net/L3ynM/
The problem with my sample:
The 'mydates' series doesn't take 100% height of the chart
If the 'mydates' series begins midchart, it starts with an angle. I'd like it to go straight up
Unless you really need the legend entry, I would recommend using plotBands instead
http://api.highcharts.com/highcharts#xAxis.plotBands
You can also do it like this, if you do really need the legend:
http://jsfiddle.net/jlbriggs/JVNjs/305/
data:[[1.5,0],[1.5,80],[2.25,80],[2.25,0]]
It relies in part on setting a min and max, and using those min and max values as your y data points.