On Jun 2, 2011, at 10:54 PM, Rolf Turner wrote: > On 03/06/11 10:26, CAB wrote: >> Dear R users >> I am modifying a column chart which I have created in R using barplot to >> make it clearer. I have been able to change the settings to increase the >> width of the axes lines and the text size but I cannot find the code to >> change the width of the lines which create the bars/columns themselves. Can >> anyone point me in the right direction please? > > As the code currently stands, it would appear that you *can't* change > the widths of the lines which create the bars. > > However, it wouldn't be too hard to hack the code to make this possible. One > thing that makes it slightly tricky is that the code allows for cross-hatching > of the bars, and that is effected by the rect() function. The lwd argument > to rect() has an impact upon both the perimeter of the rectangle and > the cross-hatch lines. Presumably you don't want to increase the line width > of the latter. Hence you'd have to make two calls to rect() --- one to > draw the perimeter with the line width increased, and no cross-hatching, > and then again with the line width as usual and with the specification of the > cross-hatching included. > > The code for barplot.default() is all in raw R (no mucking around with > calls to .Internal() !!!) and is pretty straightforward, so the hack won't > be too hard to implement. > > Good luck. > > cheers, > > Rolf Turner
If you need the 'density' cross hatching, there is a workaround: par(lwd = 3) barplot(1:5, col = "white") par(lwd = 1) barplot(1:5, density = 10, add = TRUE) If you don't need the cross hatching, just use the first two lines. HTH, Marc Schwartz ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
