[R] Contour plot

[Achim Zeileis]

On Tue, 8 Feb 2005 01:15:06 +0100 dhkblaszyk at zeelandnet.nl wrote:

> Hello,
> 
> I would like to make a contourplot of the following data;
> 
> > x <- 1:10
> > y <- 1:10
> > z <- 100:110
> 
> By doing >contour(x,y,z) I get the following error;
> 
> "Error in contour.default(x, y, z) : no proper `z' matrix specified"
> 
> How do I fix this??

x and y specify a grid and thus z must provide a value for each
combination of the x's and y's! For example:
  x <- y <- 1:10
  contour(x, y, outer(x, y))
Also look at 
  outer(x, y)
and read ?contour.

Z

> Kind regards, Datius Blaszijk
> 
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> 
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