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Clipping IDLgrPolyLine objects? [message #13844]

Thu, 17 December 1998 00:00

dEdmundson
Messages: 23
Registered: February 1998

Junior Member

I've created my own Plot2D object that contains axes and
any number of line plots. The user sets the axes range
via a keyword parameter. Plots are then added via an
object method, e.g.

p = Obj_New('Plot2D', xrange=[0.0,50.0], yrange=[-0.5,0.5])
x=findgen(100)
p->addplot,x,sin(x)

The problem is that the polyline object is not clipped to
the box defined by the Plot2D range. If x spans a larger
range (as it does above), the line crosses the boundary.
While I can deal with clipping at the x endpoints easily
enough, I can't think of a simple way to clip pieces of
the polyline that go over the top or bottom. Is there
a simple method of clipping polylines?

Cheers,
Darran.

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[Message index]

		Clipping IDLgrPolyLine objects? By: dEdmundson on Thu, 17 December 1998 00:00
		Re: Clipping IDLgrPolyLine objects? By: Struan Gray on Fri, 18 December 1998 00:00
		Re: Clipping IDLgrPolyLine objects? By: Mark Hadfield on Fri, 18 December 1998 00:00

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