search for: mattcstat

...Given the way I've done this, the lines() are all clipped RIGHT at the limit of the plot box. So given the plot is called first these lines leave little coloured dashes on the black of the plot box. To sort this I've called box() at the end. This all seems very redundant? Thanks Matt -- mattcstats@gmail.com [[alternative HTML version deleted]]

Pure curiosity but does anyone know why '<-' and '=' generate different columning headers? > test <- data.frame(V1=c(1,2,3), V2=c(4,5,6)) > test V1 V2 1 1 4 2 2 5 3 3 6 > test <- data.frame(V1<-c(1,2,3), V2<-c(4,5,6)) > test V1....c.1..2..3. V2....c.4..5..6. 1 1 4 2 2 5 3

I know citation() gives the R citation to be used in publications. Has anyone put this into endnote nicely? I'm not very experienced with endnote, and the way I have it at the momeny the 'R Development Core Team' becomes R. D. C. T. etc. Cheers.

Hi All, Will try and keep brief, excuse the poor graphics skills, first time using GIMP. I would like to make the first one look (somewhat) like the second if possible. From: http://d.imagehost.org/0519/Screen_shot_2010-12-08_at_3_50_23_PM.png To here: http://d.imagehost.org/0293/Screen_shot_2010-12-08_at_3_50_23_PM2.png I imagine the line going over the top with the p-values is probably not

Two questions: 1) Are there any good R guides/sites with information/techniques for dealing with large datasets in R? (Large being ~2 mil rows and ~200 columns) 2) My specific problem with this dataset. I am essentially trying to convert a date and add it to a data frame. I imagine any 'data manipulation on a column within dataframe into a new column' will present the same issue, be it

...fine. They have to be defined as *something* .... If you want multivariate distributions with non-normal marginal distributions, consider the 'copula' package, but be prepared to do some reading -- this is a fairly big/deep topic. good luck. --Forwarded Message Attachment-- From: mattcstats at gmail.com To: jholtman at gmail.com; r-help at r-project.org Date: Tue, 24 Aug 2010 11:27:51 +0800 Subject: Re: [R] Adding column to dataframe > > Provide and 'str' and 'object.size' of the object > so that we can see what you are working with. My rule of thumb is &g...

Hi All, I have a dataset, longitudinal in nature, each row is a 'visit' to a clinic, which has numerous data fields and a count variable for the number of 'events' that occurred since the previous visit. ~50k rows, ~2k unique subjects so ~25 rows/visits per subject, some have 50 some have 3 or 4. In STATA there is an adjustment for the fact that you have multiple rows per

Hi All, I have trying to do what I thought was a reasonably simple graph but I think I'm now going in circles with the colour. Attached is a picture of where I'm up to. The line creating this is: qplot(ageincgraph$age, ageincgraph$rate, position="dodge", stat="identity", geom="bar" ) + aes( colour=ageincgraph$era) +