2D zooming

[Oriya eden]

Hi.

I'm using a trial version of RadControls for WPF.

I was looking for a way to dynamically "Zoom" in/out a 2D chart( both the x and y axises).

I tried to change TicksDistance value to achieve this goal, but no use.
I thought a refresh might be needed so I added a Dispatcher.Invoke call, and steel no use.

On the AxisY I tried all the above replacing TicksDistance of AxisX with Step property of AxisY.
No use.

If "zooming" is possible in a 2D (Spline series) what is the correct way achieving it?
Thank you
Uriya

code snippet:

 

this

 

 

.mMyChart.RadChart1.DefaultSeriesDefinition = new SplineSeriesDefinition();

 

List

 

<Data> listData = new List<Data>();
for (int i = 0; i < oc.OctaveNotes.Length; i++)  

 

 

{    listData.Add(

new Data(oc.OctaveNotes[i]));    }

 

this

 

.mMyChart.RadChart1.ItemsSource = listData;

 

 

 

 

 

if

 

(e.Delta > 0)//wheel up  

 

 

{ 

 

 

    Int32 Step = this.mMyChart.RadChart1.DefaultView.ChartArea.AxisX.TicksDistance;  

    Step = Step / 4 * 5; 

 

    this.mMyChart.RadChart1.DefaultView.ChartArea.AxisX.TicksDistance = Step;  

} 

 

else  

{ 

 

    Int32 Step = this.mMyChart.RadChart1.DefaultView.ChartArea.AxisX.TicksDistance; 

    Step = Step / 5 * 4; 

 

    this.mMyChart.RadChart1.DefaultView.ChartArea.AxisX.TicksDistance = Step;  

}

this.mMyChart.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Render, mEmptyDelegate);

 

 

 

 

 

 

public class Data  

{ 

 

    private DateTime mX; 

 

    public DateTime X  

    { 

 

        get { return mX; } 
       set { mX = value; }  

 

    }

 

 

 

    private Double mY;
    public Double Y

 

    { 

 

 

        get { return mY; } 

 

        set { mY = value; } 

    }

    public

 

Data(NoteInOctave note)  

 

 

 

    {

        mX = note.NoteDateTime; 

 

        Double.TryParse(note.MesuredValue, out mY);  

    }

 

}

 

 

 

[Vladimir Milev]

Hi Oriya eden,

Unfortunately zooming they way you describe it requires data and UI virtualization in RadChart which is not yet available. These features are on our TODO list and will be implemented for one of the next releases.

All the best,
Vladimir Milev
the Telerik team

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