R help - May 2002 - plot() accepts arrays of cex and col, xyplot() does not

An inconsistancy:

    n <- 6
    x <- 1:n
    y <- rnorm(1:n)
    q <- ( x %% 3 + 1 ) * 2
    plot( x, y, cex=q, col=q )
    xyplot( x ~ y, cex=q, col=q )

While plot() draws different sizes and colors
xyplot() uses only one color and size.

Wolfram Fischer

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plot and xyplot use different technologies and syntax. For instance,
there is a typo in your code below: you meant xyplot(y ~ x, cex = q, col
= q) instead of xyplot(x ~ y, cex = q, col = q).

If you want to reproduce your example with xyplot:

xyplot( y ~ x, groups = x,
    panel = function(x, y,...){
      panel.superpose(x, y, cex=q, col=q,... )
      })

Best,

Renaud



Wolfram Fischer - Z/I/M wrote:
> 
> An inconsistancy:
> 
>     n <- 6
>     x <- 1:n
>     y <- rnorm(1:n)
>     q <- ( x %% 3 + 1 ) * 2
>     plot( x, y, cex=q, col=q )
>     xyplot( x ~ y, cex=q, col=q )
> 
> While plot() draws different sizes and colors
> xyplot() uses only one color and size.
> 
> Wolfram Fischer
> 
>
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> r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
> Send "info", "help", or "[un]subscribe"
> (in the "body", not the subject !)  To: r-help-request at
stat.math.ethz.ch
>
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-- 
Dr Renaud Lancelot, v?t?rinaire
CIRAD, D?partement Elevage et M?decine V?t?rinaire (CIRAD-Emvt)
Programme Productions Animales
http://www.cirad.fr/presentation/programmes/prod-ani.shtml (Fran?ais)
http://www.cirad.fr/presentation/en/program-eng/prod-ani.shtml (English)

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