CODEWITHSUNDEEP
wpfvb.netlivecharts
Naucle
Naucle

Reputation: 626

Reseting zoom and pan when updating chart in livecharts

I'm using beto-rodriguez's livecharts for VB.NET/WPF, where I'm setting the source data in the code-behind and showing a plot when the user clicks a button.

I have enabled the zooming feature on my chart using chart.Zoom = ZoomingOptions.X. My issue here if that if I zoom to 150% and pan away from the point (0,0) for example, and I load a new plot on the same control, the zoom is not reset, as the new plot will be zoomed 150% and panned by the same value.

Is there a way to reset the chart zoom and pan every time its .Series value is reset ?

By the way, my x-axis contains dates, therefore, setting the min and max values wouldn't work.

Upvotes: 2

Views: 5910

Answers (2)

bto.rdz
bto.rdz

Reputation: 6720

Your answer is right, there you are forcing the range of your axis, but you can also let the chart to try to auto scale setting your axis limits to double.NaN

From the site: https://lvcharts.net/App/examples/v1/wf/Zooming%20and%20panning

cartesianChart1.AxisX[0].MinValue = double.NaN;
cartesianChart1.AxisX[0].MaxValue = double.NaN;
cartesianChart1.AxisY[0].MinValue = double.NaN;
cartesianChart1.AxisY[0].MaxValue = double.NaN;

Upvotes: 7

Naucle
Naucle

Reputation: 626

I found the solution :

    xAxis.Labels = labels

    ' Run these two lines every time the chart is updated
    xAxis.MinValue = 0
    xAxis.MaxValue = labels.Count - 1

Where xAxis is the name of my Axis control and labels is a list of strings containing the x-axis dates.

Upvotes: 0

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