valueAxis range (min & max) based on chart series data

[Chris]

Quick question: is there a way set the valueAxis min and max based on the series data? For example I want the min to be 25 less than the minimum value present in my data set and I want the max to be 25 more than the maximum value in my data set?

Thanks in advance.

[Iliana Dyankova]

Hello Chris,

In order to achieve the expected result I can suggest setting valueAxis min/max values dynamically via the setOptions() method. As an example:

//get reference to the chart widget
var chart = $("#chart").data("kendoChart");
//set min / max options
chart.setOptions({valueAxis: {min: 0, max: 400}});

Regards,
Iliana Nikolova
Telerik

 

 

[Robert]

So if i am binding the chart via remote data and then attempting to set min and max via the render event, how would I set the min and max based on values from the chart?  ie - how do I access the series mix and max values from javascript?

[Robert]

Actually I found a post

https://docs.telerik.com/kendo-ui/knowledge-base/change-the-min-value-of-the-valueaxis-dynamically

however, my chart is in MVC not created in Jquery so is there a way to set these after render?  I tried setting in the render event, but it has no effect.  And if I try to redraw() within that event, you get an infinite loop as redraw fires render event again.

[Alex Hajigeorgieva]

Hello, Robert,

The DataBound event should provide you with the desired functionality. For example, if you wanted to set the valueAxis height to always be a quarter of the height of its bars, you could use a function like the one below:

.Events(events => events
     .DataBound("calculateColumnsMax")
)

function calculateColumnsMax(e) {
    var chart = this;
    var volumeValueAxisMax = Math.max(...chart.dataSource.data().map(stock => stock.Volume)) * 4;
    // set valueAxis max so the bars are always 1/4 of the chart height
    chart.options.valueAxis[0].max = volumeValueAxisMax;
    chart.redraw();
}

Give this a try and let us know in case of further questions.

Kind Regards,
Alex Hajigeorgieva
Progress Telerik