How to use Zoom?

[kelias]

I have tried to turn on the zoom feature and I can get the magnifier to appear but it doesn't seem to respond to mouse input. I can't drag it or move it around at all. What am I missing?

 I'm doing this: 

chart1.Zoom.Mode =

ZoomMode.Magnifier;

[JuanC]

Have you tried moving your mouse over the magnifier after it appears?

Can you post/send a small sample that reproduces the bug where we do not track the mouse movements?

Regards,

JuanC

[kelias]

Just need to call this method:

private void NormalLineChart()

{

Axis a = new Axis();

a.Min = 0;

a.Max = 50;

chart1.AxesY.Add(a);

List dps = LoadRandomDateTimeData(10,0,50,10);

SeriesAttributes series = new SeriesAttributes("What");

series.BindingPathX = "When";

series.Gallery = Gallery.Line;

series.ItemsSource = dps;

series.AxisY = a;

series.Marker.Visibility = Visibility.Collapsed;

series.StrokeThickness = 2;

chart1.Zoom.Mode = ZoomMode.Magnifier;

chart1.Series.Add(series);

chart1.AxisX.Labels.Format = AxisFormat.Date;

}

private List LoadRandomDateTimeData(int seed, int min, int max, int correlation)

{

List dps = new List();

Random rnd = new Random(seed);

int last = min;

for (int i = 0; i < 100; i++)

{

int itm = rnd.Next(last-correlation, last+correlation);

if (itm

if (itm > max) itm = rnd.Next(last-correlation, max);

last = itm;

dps.Add(new DataPoint(itm, DateTime.Today.AddDays(i)));

}

return dps;

}

public class DataPoint

{

public double What { get; set;}

public DateTime When { get; set;}

public DataPoint()

{}

public DataPoint(double what, DateTime when)

{

What = what;

When = when;

}

}

[kelias]

Any idea why I can't seem to move the magnifier? It doesn't seem to respond at all to the mouse. I've tried left-clicking and dragging, I've right-clicked and tried dragging etc.. but nothing.

[JuanC]

Please try invoking the code that sets the Zoom mode in the Page/Window loaded event instead of the Page/Window constructor.

We will try to fix this in future builds but in the meantime setting the Zoom mode in the Loaded event should work as expected.

JuanC

[kelias]

Nice, works like a charm. Thanks!

[JuanC]

Zoom (and Scroll) is one of the areas where we are actively working on. Because of this we will separate Magnifying from the other zoom modes. This will allow using the magnifier after zoom has been applied and will allow us to clean up the API. In future builds to turn on the magnifier you will need the following code

chart1.Zoom.Magnifier.IsEnabled = true;

We apologize in advance for the inconvenience but this is a change we felt would improve the product significantly. If you are interested in testing our newer builds please send a message to wpf at softwarefx dot com.

JuanC

ChartFXWPFTest15.zip

[kelias]

How do I zoom back out again? I'm setting the chart zoom to selected, and it works fine, but I can't seem to see a nice way to zoom back out again.

[kelias]

Nevermind I got it. Just ChartControl.Zoom.Mode = ZoomMode.Off;

Could have swore I did that earlier.

[Ethankie]

 

Hi Juan,

I am evaluating the ChartFx for WPF(trial version8.0.3581.26941). And I have a problem with zooming which is I can notfind the Zoom.Mode = ZoomMode.Magnifier. There are only 3 options as "Off, Selection,Zoomed". Anything I missed?

 Thanks

 

[JuanC]

Current builds support the magnifier through Zoom.Magnifier, e.g.

chart1.Zoom.Magnifier.IsEnabled = true/false;

There are other setings such as the size of the magnifier or the magnification factor you can also control through other properties in the ZoomMagnifier class.

JuanC