On Thu, 14 Oct 2004 15:16:30 +0200, "Wolf, Michael" <[EMAIL PROTECTED]> wrote :
>Dear list, > >are there any possibilities to fill a polygon with a point pattern or with a symbol >pattern like '+' oder '-' instead of shading lines? I don't think the graphics devices know how to do that, but you could program it yourself: Supposed interior(x,y) is a function that determines whether the points (x,y) are in the polygon, then just create a grid of locations, subset when interior(x,y) is true, and plot using pch='+'. I made a quick search and was unable to find a general implementation of the "interior" function for an arbitrary polygon; I'm a bit surprised about that. Hopefully someone else can point to one, otherwise please write one, and document it and contribute it to R. It's a relatively standard algorithm, and would be useful. Duncan Murdoch ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
