Hello!!!

Hey, using the property "TrackerFormatString" is possible to display different information when you click in a series ... but doing this, you loose the primary functionality (show the X,Y coordinates), how should I do to add new information and keep the old functionality?

Ok, i should use {2} for X-value, and {4} for Y-value, thx

Is the LineSegmentSeries available in the WPF? Can't find it.
MDJ

It's a custom class created directly in ExampleLibrary Solution. Specifically LineSegmentSeries.cs.

Good luck

Hi,

Is there a way change the background of the plot area only ? (in Metro - The Background property isn't what I want because it changes the whole background of the control, not only the plot area background).

Thanks in advance,

Nicolas

I think you can use a rectangle annotation on the entire chart (with no min/max x/y).

Nice idea !

But with this code, the background don't change :

RectangleAnnotation plotBackground = new RectangleAnnotation();
plotBackground.Fill = OxyColors.Pink;
PlotModel.Annotations.Add(plotBackground); 

What am I doing wrong ?

Try to update your plotModel and your graphic component...

Already tried it, without better results :(

There is no "code" tab in online silverlight version of example browser ( http://www.oxyplot.org/ExampleBrowser/ ). Why?
Or - am I blind?
It is very usefull, to display code in examples like in desktop app (OxyPlot.WPF Example Browser)...

Agree, created https://oxyplot.codeplex.com/workitem/10129

I made an Extension for Plot named PlotEx using writeablebitmap method to render sharps.
This method brought me dozens of performance improvement when PlotEx was rendering 5,000 points with 500 FPS.
Why must I make a new class, PlotEx?
It's because Plot doesn't include IRenderContext, but use a specified SharpRenderContext.
If so, IRenderContext becomes meaningless.

BTW, How to contribute my work about Plot?

It would be very interesting to see how you have implemented this render context based on writable bitmaps!
Can you create a fork? Then make a pull request, and I will review!

objo wrote:

It would be very interesting to see how you have implemented this render context based on writable bitmaps!
Can you create a fork? Then make a pull request, and I will review!

Hi objo, I don't know how to create a fork and make a pull request. I put source code on a network disk. You can download it yourself.
Supporting directly downloading with IE:
Download OxyPlot.Wpf.Extension (for WPF only)

And, objo, may you feel like this one: Change Current DrawingContext to one using OpenGL

Hello,

When I tried to create a category axis with its labels' angles set to 90 degrees, I have the following result:



As we can see, the axis title is not shown correctly and labels that are to big are not displayed correctly.

Is this a bug or should I be setting a different property to display this information correctly?

Thanks!

Any ideas? :(

Adjust the AxisTitleDistance property of the axis:

model.Axes[0].AxisTitleDistance = 100;

Good luck.

what is the value of model.PlotMargins.Bottom? If set to NaN, the margin should be adjusted automatically. If that is not working, then it is a bug! Using the AxisTitleDistance is a work-around :-)

Hi ALL, I have a program which takes OxyDataItem and plot it using LineSeries (DateTime Axis vs LinearAxis). However once I have used the function on RefreshPlot(true) the plot seems to disappear. Any idea why would this happen?


public void MyOxyPlot(string GraphName, string GraphType, DateTime StartDate, DateTime EndDate)

    {

        var tmp = new PlotModel(GraphName + " " + GraphType);
        tmp.Axes.Add(new OxyPlot.Axes.LinearAxis(OxyPlot.Axes.AxisPosition.Left) { MajorGridlineStyle = LineStyle.Solid, MinorGridlineStyle = LineStyle.Dot });
        tmp.Axes.Add(new OxyPlot.Axes.DateTimeAxis(OxyPlot.Axes.AxisPosition.Bottom, StartDate, EndDate, null, null, OxyPlot.Axes.DateTimeIntervalType.Hours)
        {
            MajorGridlineStyle = LineStyle.Solid,
            Angle = 90,
            StringFormat = "yyyy",
            MajorStep = 365.0,
            //MajorStep = 1.0 / 24 / 2, // 1/24 = 1 hour, 1/24/2 = 30 minutes
            IsZoomEnabled = true,
            MaximumPadding = 0,
            MinimumPadding = 0,
            //TickStyle = TickStyle.None
        });
        var ls = new OxyPlot.Series.LineSeries("Line1") { DataFieldX = "X", DataFieldY = "Y" };
        List<OxyDataItem> ii = new List<OxyDataItem>();
        foreach (DataRow dtr in TSDataTable.Rows)
        {
            if ((DateTime)dtr["Time Stamp"] >= StartDate && (DateTime)dtr["Time Stamp"] <= EndDate)
                ii.Add(new OxyDataItem { X = (DateTime)dtr["Time Stamp"], Y = (double)dtr[GraphType] }); 
        ls.ItemsSource = ii;
        tmp.Series.Add(ls);
        if (MyMDDPlotModel == null)
        {   
            MyMDDPlotModel = tmp;
            MyMDDPlotModel.InvalidatePlot(false);
            MyMDDPlotModel.RefreshPlot(true);
        }
    }

When I create a heatmap with say +10 is red, 0 is green and -10 is blue, the interpolated color of two adjacent cells of +10 and -10 is not green (0). I expect that the color between these two cells is green! Or is there a setting to change this behaviour?

Interesting :) I think this is a bug when Interpolate = true.
The heat map is rendered by interpolating a bitmap, and this is not the same as the interpolation of the palette.
At the center of each pixel it will be correct, but between pixels may be wrong.

It can be reproduced by
Does anyone know how this can be fixed?

Someone found a solution for this 'bug'?

Does anyone know if it is possible, in lack of better words, to collapse parts of an axis, more specifically a DateTimeAxis, in order to bring segments of the graph closer together?

Example (for sake of argument, not real world):
I am mapping a velocity for a moving object as a function of a datetime. At certain points in the lifetime of the observation, the object has no velocity (not just velocity 0, but no velocity). Lets say that the period mapped is 1 day (24 hours from midnight to midnight). In the middle 6 hours (0900 hours to 1500 hours), there is nothing to map, which leaves a wide gap in the graph between the first and the second segment of the graph with nothing in it. I would like to draw those two parts together by "collapsing" the timeaxis, such that 09 hours and 1500 hours on the axis is only seperated by some symbol (e.g. curly lines or dots).

This could of course be accomplished by using two different Plots side by side, but I would like to use the same graph.

I think this is in the issue list
http://oxyplot.codeplex.com/workitem/8903
It is not possible with the standard axes, but should not be too hard to implement (need to change the transform methods)