faroskalin wrote at 2013-12-06 16:52:

I am using OxyPlot, a graphing library for C#. What confuses me so far is the type for some of the constructors. A code snippet is below:



This generates this image:



(It's a heat map)


My question is - what is var? For example, when you create a new multidimensional array, you do this:

double[,] doubleArray = new double[columns, rows];

Understandingly, the type for this is a double[,]. Why I need to know this is that I would like to store the heatmap as an instance variable, more specifically, heatMapSeries1.Data as a multi-dimensional array. However, in VS, I am unable to declare var as the type for an instance variable. The only selection I get is this:



Any OxyPlot pros in here could lend me a hand? Thank you.

objo wrote at 2013-12-06 18:17:

faroskalin wrote at 2013-12-06 18:59:

springy wrote at 2013-01-15 10:05:

Hi,

Great component, managed to meet my requirements within minutes of using it.  However, I can't seem to work out how to style the plot.  Basically I want the title and legend text in white, and the border of the plot white.  I've tried the following properties on the plot but they don't seem to make any difference;

• TextColor="White"
• Foreground="White"
• PlotAreaBorderColor="White"

Any help much appreciated.

Lee.

objo wrote at 2013-01-22 10:32:

I added a new example "ColorBindingDemo" in Examples/WPF/WpfExamples. It seems to work as expected. The inherited property Foreground is not in use.

If you change the colors in a PlotModel, remember to refresh the plot afterwards - this is not handled automatically.

Tech_Junkie wrote at 2012-09-27 17:14:

Dear Objo (or others who know the solution)

In my project I use three mousehandlers on the plotmodel that is linked to the plot. Somehow if I click very fast, or move my mouse during the clicking (then it happens quicker) silverlight crashes. I think it has to do with putting annotation lines in the plotmodel, and a minimal example that has this behaviour can be seen at: 

http://pastebin.com/MNezy8wj

In the final project there is more data and more happens in the mousehandlers apart from the adding of the annotations. But this is a minimal example that also shows the crash.

When I do not use my own mousehandlers, there is also a but of lag sometimes when clicking excessively or moving the mouse around during the clicking. Could it have something to do with internal timelag and not being able to call the handlers quick enough?

objo wrote at 2012-09-29 20:40:

thanks for creating the minimal example. I am not sure why your example crashes, but I see you are adding the same annotation instances to the model's Annotations collection multiple times! OxyPlot currently does not check this for you. I did some changes and the following version does not crash on my machine http://pastebin.com/8hb7EzZH

Tech_Junkie wrote at 2012-09-30 12:03:

Thank you for taking a look. This is very similar to what I do in my real project, I also check the axis for its inverse point to get the value to plot on. There I also clear the list of annotations before adding new ones I want to go render, because I also include a text and arrow annotation for the value. For this example I just set a fixed value, to make the code more readable, while it still crashed. 

I think that maybe the forwarding of the event and the GetAxesFromPoint(e.Position, out xaxis, out yaxis); method help the application from not crashing, but i'm not sure. But because I won't be working on this project anymore, I am not in a position to check if this will work or not. I have tipped a colleague who will take this over from me about this thread and hope / guess that he will take a look at it.

Tech_Junkie wrote at 2012-08-13 14:00:

The module is still doing what I want, thank you for all the functionality Objo, but now I'm diving deeper and deeper into the use of the code, and of course I'm finding small boundaries.

After http://oxyplot.codeplex.com/discussions/376175 it is not possible to give the text with a LineAnnotation a TextOrientation. This is great! except that the text is always put on the same side of the line (here it is the left-hand side) and sometimes (for instance when the line is very close to the lower end of the plot) I would like to put the text on the right-hand side of the line because it will not be readable otherwise.

Would it be possible to specify a left / right (and above / under) relative location for the text with a LineAnnotation?

objo wrote at 2012-08-21 13:30:

Agree - this should be added. It would be best if this was automatic, but maybe this is not possible? Also - the text orientation enum could be replaced by a text direction angle?

objo wrote at 2012-08-23 15:56:

Added issue http://oxyplot.codeplex.com/workitem/9987

oriches wrote at 2014-05-08 19:29:

objo wrote at 2014-05-10 23:22:

oriches wrote at 2014-05-12 10:58:

CSharpdevs wrote at 2014-05-14 19:06:

        var colorAxis = new LinearColorAxis{ Position = AxisPosition.Right, Palette = OxyPalettes.Hot(30),Minimum=0,Maximum=10,HighColor=OxyColors.Blue,LowColor=OxyColors.BurlyWood,Key="r"};
        model.Axes.Add(colorAxis);
        var s4 = new ScatterSeries {ColorAxis = colorAxis };
        s4.MarkerType = MarkerType.Circle;
        s4.BinSize = 10;
        s4.Title = "renk";
        s4.MarkerStrokeThickness = 1;
        Random r=new Random();
        s4.Points.Add(new ScatterPoint(3, 5, 10*r.NextDouble(),1));
        s4.Points.Add(new ScatterPoint(5, 5, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(2, 4, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(3, 3, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(3, 2, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(3, 5, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(2, 2, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(1, 4, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(4, 3, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(0, 0, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(8, 8, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(8, 8, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(8, 8, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(8, 8, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(8, 8, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(8, 8, 10 * r.NextDouble(), 1));
        s4.Points.Add(new ScatterPoint(8, 8, 10 * r.NextDouble(), 1));
        s4.XAxisKey = "X axis";
        s4.YAxisKey = "Y Axis";
        model.Series.Add(s4);
        plot1.Model = model;

Ivan_kol wrote at 2013-07-17 19:18:

raphay wrote at 2013-07-18 11:21: