[R] advanced plotting

downunder larsfromspace at web.de
Fri Nov 10 01:09:12 CET 2006

!urgent! Hi all. I am facing a problem plotting a indicatormatrix to
visualize the pattern. Matrix consist from 1's and  0's. 

 for example x <- matrix(c(0,0,1,0, 1,1,1,1, 0,0,0,1, 1,0,1,1), nrow = 4,
 an i want to have a plot like

  |     .
  | . . . .
  |       .
  |  .  . .  

  I thinking of somethink like a for loop, which creates a data point
whenever a data point in x[i,j]=1. Anybody  
 can give me a hint or has an idea how to do this???? thanks in advance for
every help. Lars
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