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This is less of a question than a warning. In LyX 2.1.0 with pgfSweave under Ubuntu 10.04 I've been trying to generate a number of plots with a for loop. For example 

<<fig=TRUE>>=
for (lala in 1:200) { hist(rpois(1234,lala)); }
@

. After a long period of experimentation I'm confident saying that the loop works for for(lala in 1:20), for(lala in 21:40), for(lala in 41:60), ..., for(lala in 181:200), but not for more than twenty plots at a time.

Strange, I know, and if I come up with a resolution to the problem I'll post it.

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Does pgfSweave really have the capability of making plots from a for loop like that? I've always generated them in a for loop but then used cat to write out the LaTeX code, just like you have to do for regular Sweave. (On the other hand, judging by the missing parentheses, maybe this is meant to be pseudo-code, in which case, a reproducible example would be helpful.) Thanks for your clarification. – Aaron Nov 14 '11 at 3:13
@Aaron Missing parentheses fixed, thanks for the correction. To actually run the code just insert something like plot(hist(rpois(33,i))). What do you mean by cat to write out the LaTeX code? I am doing this within LyX. – isomorphismes Nov 14 '11 at 4:03
@Aaron "I've always generated them in a for loop but then used cat to write out the LaTeX code, just like you have to do for regular Sweave." Do you have a link that explains this? – isomorphismes Nov 14 '11 at 4:15
1  
See the Sweave FAQ. Sorry I can't get the link right now but it should be easy to google for. – Aaron Nov 14 '11 at 5:10
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closed as not a real question by Joseph Wright♦ Feb 4 '12 at 22:51

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