How to get maximum coordinate in Zed Graph Pane

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Hi all,

I would like to write the line in the pane that divide graph into two parts. I already knew the method to do this. The coordinates between the start and end of the line are required. I could not find how to get the maximum coordinate (xxxxxx)of Y axis in my graph. Here is my code snippet.

// Add a line to graph 
LineObj line = new LineObj(Color.Black, 2009, 0, 2009, xxxxxx);
line.Location.CoordinateFrame = CoordType.AxisXYScale;
line.Line.Style = System.Drawing.Drawing2D.DashStyle.DashDot;
myPane.GraphObjList.Add(line);

Thank you very much.

Posted 27-Dec-10 20:29pm

Wipoosit Udomsrisuk

Updated 27-Dec-10 20:33pm

JF2015

v2

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JF2015 28-Dec-10 2:33am

Added code formatting.

wizardzz 28-Dec-10 11:32am

How are you populating the graph? Could you possibly get the maximum value when you retrieve, parse, or bind the data?

Wipoosit Udomsrisuk 29-Dec-10 1:40am

Hi wizardzz,

I used the following code to populate the graph. First create PointPairList of (x,y) value by adding Array of double of x and y (GraphDataXJapan[] and GraphDataYJapan[]) into it.
After that, create the curve using that PointPairList. I do not know how to get the maximum Y coordinate of Y-axis.

PointPairList listJapan = new PointPairList();
listJapan.Add(GraphDataXJapan, GraphDataYJapan);
LineItem curveJapan = myPane.AddCurve("Japan", listJapan, Color.Blue,
SymbolType.Circle);

I am not sure I answered your question because I am quite new with Zed Graph library.

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Thomas Krojer · Answer 1 · 2010-12-30T03:34:00

Solution 1

use (with name of your GraphPane):

.Rect.Size.Height (or Width ... I never know what is X or Y ...)

Posted 30-Dec-10 3:34am

Thomas Krojer

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Wipoosit Udomsrisuk 2-Jan-11 23:00pm

Hi Thomas,

Thanks for your reply. I tried it but it gets the height of the graph pane which is in pixels. What I need is the graph coordinate.