[2005] NPlot - If you know how to use it ...please help!

[dinosaur_uk]

Hello there,

I am using Nplot at the moment, all is fine and well but I am trying to capture the co ordinates of where the user clicks on the graph.

I can see the co ordinates when i float over the graph, but i cant seem to find the class which shows the co ordinate in a little tooltip by the mouse cursor.

ANyone help ???

CHeers

[jmcilhinney]

If that functionality has been declared Friend ('internal' in C#, which was probably the development language) then you won't be able to see it. I've never used NPlot but if it involves placing a control on your form then you should be able to use the members of the Control class. All the mouse-related events of the Control class give you cursor coordinates. As a last resort you can use the Cursor.Position property to get the cursor location in screen coordinates and then use the PointToClient method of the appropriate control to get that point in relation to that control.

[public]

This may come a bit late (and is in C#):

            MouseEventArgs eA = (MouseEventArgs)e;

            // Calculate data value
            Point here = new Point(eA.X, eA.Y);
            double x = this.plotFull.PhysicalXAxis1Cache.PhysicalToWorld(here, true);
            double y = this.plotFull.PhysicalYAxis1Cache.PhysicalToWorld(here, true);