[R] barplot: different colors for the bar and the strips
hchen at utmem.edu
Thu Sep 7 19:14:38 CEST 2006
Hello Marc Schwartz
On Thu, Sep 07, 2006 at 07:54:05AM -0500, Marc Schwartz wrote:
> On Thu, 2006-09-07 at 06:18 -0500, Hao Chen wrote:
> > Hi,
> > I am using barplot and would like to know if it is possible to have bars
> > filled with one color while use a different color for the shading lines.
> > The following code colors the shading lines, leaving the bars in white:
> > barplot(1:5, col=c(1:5), density=c(1:5)*5)
> > while the colors are applied to the bars when density is removed.
> > barplot(1:5, col=c(1:5))
> > I did check ?barplot and found the following:
> > col: a vector of colors for the bars or bar components.
> > Thanks,
> > Hao
> Note the key word 'or' in the description of the 'col' argument.
> You need to make two separate calls to barplot(). The first using the
> fill colors, then the second using the shading lines AND setting 'add =
> TRUE', so that the second plot overwrites the first without clearing the
> plot device.
> barplot(1:5, col=c(1:5))
> barplot(1:5, col = "black", density=c(1:5), add = TRUE)
> Just be sure that any other arguments, such as axis limits, are
> identical between the two calls.
> Marc Schwartz
Thank you very much for your help. It works but only in the order as you
put it, since the following code only shows the color, but not the
barplot(1:5, col = "black", density=c(1:5))
barplot(1:5, col=c(1:5), add = TRUE)
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