... or read about set.seed() and use it. B.
On Nov 24, 2015, at 2:58 PM, William Dunlap <wdun...@tibco.com> wrote: > rpois(100, 5) gives a different set of random numbers each time it is > called, so if you want repeatable results compute it once and use its > value in the calls to plot. E.g., > r <- rpois(100, 5) > plot(table(r), type="h", col="red", lwd=10, main="hello") > Bill Dunlap > TIBCO Software > wdunlap tibco.com > > > On Tue, Nov 24, 2015 at 11:47 AM, Timothy D. Legg <r...@timothylegg.com> > wrote: >> Hello, >> >> I am quite new to R and have high expectations for my future with it. >> >> R version 3.0.2 (2013-09-25) -- "Frisbee Sailing" >> Copyright (C) 2013 The R Foundation for Statistical Computing >> Platform: x86_64-pc-linux-gnu (64-bit) >> >> I have stepped back to an earlier tutorial and found an odd inconsistency >> with one of the examples: >> >> plot(table(rpois(100, 5)), type = "h", col = "red", lwd = 10, main = >> "rpois(100, lambda = 5)") >> >> I read the local documentation on the plot command and it's arguments. >>> From that, I learned that 'main' defines the title from a text string. I >> decide to modify some values to see how the resulting behavior changes. >> What I didn't expect was that modifying the text string caused the chart >> to change greatly. >> >> plot(table(rpois(100, 5)), type = "h", col = "red", lwd = 10, main = >> "rpois(100, lambda = 4)") >> >> With the previous line, the columns change values. >> >> plot(table(rpois(100, 5)), type = "h", col = "red", lwd = 10, main = "hello") >> >> This line even adds a 12th column. >> >> I return to plot the original and the output has changed again. Here are >> some screenshots >> >> http://timothylegg.com/R/lambda5_.png >> http://timothylegg.com/R/lambda5.png >> http://timothylegg.com/R/lambda4.png >> http://timothylegg.com/R/hello.png >> >> What am I doing wrong to get inconsistent results like this? I'm very new >> to R and really hoping that this is a misunderstanding on my part. >> >> ______________________________________________ >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >> 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. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
