I was wondering if there is a way to prevent Highcharts from recalculating and redrawing the scale of the Axis when I add a new serie.
What I need to do is the following: I have a scatter chart with a lot of data; when the user selects a point, I add a new series with a "line" type. This series' points are a limited sample from the previous ones, so no "real" new points are added, but the scale of the xAxis changes.
Setting xAxis' min and max value, startOnTick and endOnTick to true did not solve the problem. Any idea?
Edit:
As I wrote, the way Highcharts handles axis' scales is still a mistery to me. In my case, I was rendering one scatter and one column graph on the same canvas. In response to a user click, I was adding 2 new series: a line serie and a column serie each one based on a subset of the original data. The problem was caused by the column graph: when you add a new serie to a column graph, bars are not overlapped, but redistributed, thus creating the scale change effect.
Try to create the line series but hidden, and when you want to show it use chart.series[1].show().
Related
I'm trying to use Ant Design charts to plot an area chart with 3 series - actual, target and forecast. For some reason, the chart plots the series relative to the last item in the array, rather than relative to the x axis. I tried setting the startOnZero: true but that didn't help.
See below example:
In this example, the target is 220 and the actual is 1558, but the target point is higher on the y axis. Recreated:
https://codesandbox.io/s/beautiful-grothendieck-qtjj7?file=/App.tsx:8366-8384
If we put the 'Target' values to the bottom of the data array, it works fine for some reason:
By default it creates a stacked chart. You can set isStack to false.
function chart (data, selector) {
// generate chart with zoom feature. it scales the X domain and update the chart accordingly.
}
chart(dataset1, "#chart1")
chart(dataset2, "#chart2")
chart(datasetn, "#chartn")
the code above is a chart generator function which I give it different datasets to make me charts. in all charts, the dataset has the same X values but different Y values.
problem:
lets say we have 3 charts, all the X axis ranges are between 0-100. In the first chart, I drag mouse and create a zoombox between 30-60 and the first chart updates, now it is scaled between 30-60. But the second and third chart are intact. I need them to be updated as well between 30-60.
similarly if I do the same for second chart, I need the first and third one get updated.
here is jsfiddle to illustration
I made not so big modification to make this works.
First of all we remember globally the information about single chart in var charts array. This is done during creation of charts
charts.push(lineChart(data1,"#chart1"));
charts.push(lineChart(data2,"#chart2"));
charts.push(lineChart(data3,"#chart3"));
Next we can use this array in function zoomdrag and update.
This work maybe not perfect (reset of chart is missing) but show how to handle it and get the same zoom in all charts.
Here is jsfiddle
I'm not sure if this is possible, but I have separate, stacked highcharts. I'd like to keep them on the same graph, but stacked on top of each other, resetting the y axis to 0 each time. Here is a Fiddle of them all separate:
I've also attached an example graph of what I am imagining. The blue horizontal lines represent each new chart series's 0 point.
Sample graph example
//random line so it will let me post the fiddle. Ignore this
You can also achieve a similar effect using different height of multiple yAxis.
Example:
http://jsfiddle.net/6b9prwjc/
You are making highchart for each series in the array seriesAll by looping through it and that is causing it to create seperate charts for each series. If you just create 1 highchart and give it the series array, it will plot all the series on the same chart. Here is a modified version of your code to give you what your looking for.
https://codepen.io/Nasir_T/pen/zdzdrW
Also please check out the docs of highcharts and it will give you all the information you need. E.g. here is the combined charts link:
https://www.highcharts.com/docs/chart-and-series-types/combining-chart-types
[Edit for stacking option]
You can also stack them on top of each other by setting the plotOption > series > stacking properties. e.g.
plotOptions: {
series: {
stacking: 'normal'
}
}
Learn more on stacking in the following doc link.
http://api.highcharts.com/highcharts/plotOptions.area.stacking
Hope this helps.
Flot chart is repeating ticks on right Y axis when:
alignTicksWithAxis:1
I want to align both axes but hide repeated tick values.
http://jsfiddle.net/AUrfY/20/
Is there something in the API i have missed or i have to check thicks before painting and hide duplications.
Set the tickDecimals option to 2 to get reasonable labels for the right y axis (see this updated fiddle).
The label values are not really duplicated, but they are rounded so that they seem so.
Adding series dynamically introduce gap in the existing series.
http://jsfiddle.net/anandc999/6XRuY/
Steps to reproduce
1. load the above url
2. click any where in the candlestick (OHLC)
3. move the mouse with in the candlestick
4. click again with in the candlestick chart
Observe a new series is added but a gap is introduced in the existing Volume and OHLC series.
How to add series without a gap?
Already tried gapsize and connectNulls but doesnt work. Can anybody help?
Thanks
Anand
The problem is with ordinal axis in Highstock. This option forces to display points evenly on a chart, so when new points are added - it recalculates position of each points.
To prevent that set ordinal: false, see example: http://jsfiddle.net/6XRuY/7/
Code:
xAxis: {
ordinal: false
},