[R] problems with plot.data.frame
Berton Gunter
gunter.berton at gene.com
Thu Aug 31 18:46:01 CEST 2006
You need to read R docs. Month is a factor. ?factor
As a result you are getting a bar plot.
You can make month numeric and control axis labelling via ?axis
See also ?plot.default and ?par
There are also undoubtedly functions available either in base R or through
packages that would do this directly. You might check the hmisc and zoo
packages for starters.
-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
"The business of the statistician is to catalyze the scientific learning
process." - George E. P. Box
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Monica Pisica
> Sent: Thursday, August 31, 2006 9:30 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] problems with plot.data.frame
> Importance: High
>
> Hi list,
>
> I have a question about 'plot'. I am trying to plot values
> registered every
> month - or every other month. If i build a data.frame called
> mydata like
> this (as an example)
>
> jan 3 1 7
> mar 2 4 2
> may 1 3 2
> jul 3 7 4
> sep 5 2 3
> nov 3 1 5
>
> and use the command line:
>
> plot(mydata[c(1,3)])
>
> I get a graph that has on the x axis my months in
> alphabetical order - which
> i don't want, and instead of points i have thick horizontal
> lines. I've
> tried everything i could and understood from the R help files
> to give me
> points and on x axis the month in my order instead of alpha order. No
> success. What is the trick?
>
> I fixed the month order by using numerals in front of them
> like 01, 03, ...
> etc, but this is not an elegant solution.
>
> Any help will be much appreciated.
>
> Monica
>
> ______________________________________________
> R-help at stat.math.ethz.ch 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.
>
More information about the R-help
mailing list