akiss wrote at 2013-09-20 14:14:

<oxy:Plot x:Name="chart" Title="A Graph"/>

PlotModel model = new PlotModel();
var xAxis = new DateTimeAxis(AxisPosition.Bottom, null, @"D", DateTimeIntervalType.Months) { MajorGridlineStyle = LineStyle.Solid, MinorGridlineStyle = LineStyle.Dot };
model.Axes.Add(xAxis);
var yAxis = new LinearAxis(AxisPosition.Left, 0.0 / 0.0, 0.0 / 0.0, "Value") { MajorGridlineStyle = LineStyle.Solid, MinorGridlineStyle = LineStyle.Dot };
model.Axes.Add(yAxis);
chart.Model = model;

objo wrote at 2013-09-20 14:46:

akiss wrote at 2013-09-20 14:54:

A7eex wrote at 2013-08-14 10:23:

objo wrote at 2013-08-14 10:42:

everytimer wrote at 2013-08-14 11:11:

A7eex wrote at 2013-08-14 11:23:

objo wrote at 2013-08-14 21:25:

A7eex wrote at 2013-08-16 09:56:

anomistu wrote at 2012-03-28 16:58:

Just an fyi for this...

If ever you want to set the angle of an axis for displaying rotated major labels, you may want to correct the AxisBase.Measure method with the angle. Here's one quick way to do it:

...

double radians = this.Angle * Math.PI / 180;
var maximumTextSize = new OxySize();
foreach (double v in majorLabelValues)
{
    string s = this.FormatValue(v);
    OxySize size = rc.MeasureText(s, this.ActualFont, this.FontSize, this.FontWeight, this.Angle);
    size = new OxySize(
        Math.Abs(size.Width * Math.Cos(radians) + size.Height * Math.Sin(radians)),
        Math.Abs(size.Width * Math.Sin(radians) + size.Height * Math.Cos(radians)));
...

anomistu wrote at 2012-03-28 18:41:

Fixed (I hope) by bringing to first quadrant:

double radians = Math.Abs(this.Angle) * Math.PI / 180;
var maximumTextSize = new OxySize();
foreach (double v in majorLabelValues)
{
    string s = this.FormatValue(v);
    OxySize size = rc.MeasureText(s, this.ActualFont, this.FontSize, this.FontWeight, this.Angle);
    if (radians > Math.PI / 2)
        radians = Math.PI - radians;
    size = new OxySize(
        size.Width * Math.Cos(radians) + size.Height * Math.Sin(radians),
        size.Width * Math.Sin(radians) + size.Height * Math.Cos(radians));

objo wrote at 2012-03-30 13:23:

thanks, I will have a look at this! But isn't it necessary to check all 4 corners of the text bounding box to get the correct extents?

chage wrote at 2014-02-12 00:19:

Hi guys,
I changed the axis code according to above example to handle rotated label. Things look great on WPF but the PDF export has the label overlapped with the axis, can you advise how to fix this as well?

vboilay wrote at 2014-04-28 17:34:

objo wrote at 2014-04-29 09:17:

vboilay wrote at 2014-04-29 09:50:

AntiqueMapMan wrote at 2014-02-12 02:49:

AntiqueMapMan wrote at 2014-02-12 21:09:

bvsms wrote at 2014-04-03 02:50:

objo wrote at 2014-04-03 08:45:

bvsms wrote at 2014-04-03 08:53:

objo wrote at 2014-04-03 16:10:

objo wrote at 2014-04-03 22:26:

bvsms wrote at 2014-04-04 00:29:

antdig wrote at 2012-07-10 22:30:

I've created a line graph to plot data on and it's working well. I'd like to have the background show colored bands to represent red/yellow/green areas. For example, the background of the graph should be red for Y values less than 10; yellow for Y values >= 10 and < 20; green for Y values >= 20.

What's the best way to achieve this?

(Here's a crude example: http://www.csc-scc.gc.ca/text/pblct/rpp/rpp2012-13/images/ex1-eng.jpg )

objo wrote at 2012-07-11 00:24:

This could be done by annotations. I added a "RectangleAnnotation" class - see the example "Annotations | RectangleAnnotation - horizontal bands" in the "Example browser". The code is in the ExampleLibrary/Examples/AnnotationExamples.cs

antdig wrote at 2012-07-11 02:23:

Dude, you rock! That works perfectly.

One thing I noticed is that if I specify the MaximumY parameter as double.MaxValue it didn't plot the RectangleAnnotation. However, this was trivial to solve by omitting the MaximumY parameter.

objo wrote at 2012-07-11 14:50:

I added support also for double.MinValue/MaxValue (same effect as using NaN). I see this is useful when setting only the upper/lower bound. 

Ps. The hatched (pattern) brush in your example is not supported by OxyPlot. 

bsguedes wrote at 2012-05-25 15:46:

Hello again!

Is it possible to set an image as a watermark background in a plot?

Thanks!

objo wrote at 2012-05-26 08:28:

sorry, image/bitmap rendering is currently not supported (there are some challenges how to implement the bitmap data across the different render contexts (svg, wpf, sl, winforms, pdf etc.)

simple logos could be traced and added as vector graphics (see the Misc|La Linea example in the example browser for an example of a traced image)

bsguedes wrote at 2012-05-28 22:04:

Thanks for the answer! I was trying to solve the shadow grid problem reported on the other thread using a watermark, but now I'll no longer use dotted lines on the grid so it's fine!

michael75 wrote at 2012-05-16 12:04:

Hi there!

First of all thank you very much for this excellent charting control! I love it!

Now to my question:

I would like to have multiple trackers in a chart available. For example for "measuring" a range. It should be possible to click at the first point and then drag over the data. While doing so, it should display both trackers and show additional data like the range value between the two data points.

How can I achieve this? Do I have to modify the sources or is it possible by customizing the Tracker property of the control?

Thanks in advance for your answers!

Michael

objo wrote at 2012-05-26 08:31:

I think you have to create a custom tracker control here. Then set the DefaultTrackerTemplate property of the Plot control (WPF/SL only).