Thank you for your answer. I have about 7 stacks it is not very appealing to have just stripes with changing angles. I was wondering if there is a way to have varying patters in black and white. 

Osman 
  ----- Original Message ----- 
  From: Petr Pikal 
  To: Osman 
  Cc: r-help@stat.math.ethz.ch 
  Sent: Monday, May 31, 2004 5:01 AM
  Subject: Re: [R] bar plot patterns






  On 29 May 2004 at 16:54, Osman wrote:


  > Dear R users,
  > 
  > Is there a package or function that can produce multiple fill patterns
  > to be used instead of colors in barplots or pie charts? Shades of grey
  > are difficult to differentiate if more than 3 to 5..


  Hi


  This is what help page says about colours and shading lines 


  density: a vector giving the density of shading lines, in lines per
            inch, for the bars or bar components. The default value of
            'NULL' means that no shading lines are drawn. Non-positive
            values of 'density' also inhibit the drawing of shading
            lines.


     angle: the slope of shading lines, given as an angle in degrees
            (counter-clockwise), for the bars or bar components.


       col: a vector of colors for the bars or bar components.






  Do you want something else than


  barplot(1:3, col=c(2,3,3),density=c(2,4,6), angle=c(30,60,90))


  Cheers
  Petr


  > 
  > Osman
  >  [[alternative HTML version deleted]]
  > 
  > ______________________________________________
  > R-help@stat.math.ethz.ch mailing list
  > https://www.stat.math.ethz.ch/mailman/listinfo/r-help
  > PLEASE do read the posting guide!
  > http://www.R-project.org/posting-guide.html




  Petr Pikal
  petr.pikal@precheza.cz
	[[alternative HTML version deleted]]


