[R] assigning colors to barplot when beside=TRUE

[Alejandro Munoz Del Rio]

Quoting Paul Murrell <p.murrell at auckland.ac.nz>:
> I haven't figured out exactly what your code is supposed to produce, but 
> I suspect that you are calculating colv incorrectly.  In your example, 
> you get a colv with 5 elements.  There are a total of 10 bars plotted 
> (some are zero height because the value they are plotting is NA).  The 
> colours get applied to bars from left to right so in your case we get:
> 
> bar height:  7 NA  6 NA  1 NA NA  4 NA  3
> bar colour:  2  3  2 NA NA  2  3  2 NA NA
[snip]
your hunch is correct. setting:

colv <- rep(colv, each=2)

to "echo" each entry in the old colv solves my problem. i was not aware of the 
zero-height bars.

thanks!

alejandro

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