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: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Monica Pisica > Sent: Thursday, August 31, 2006 9:30 AM > To: [email protected] > 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 > > ______________________________________________ > [email protected] 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. > ______________________________________________ [email protected] 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.
