/sci/ - Science & Math

I'm assuming a number of you use R for your statistical analysis and can help me with this. What are some (preferably free) resources I can use to learn R? I found a couple of online tutorials, but they only cover the very basics.

I want to learn R. I already got a few books and stuff but I realized that I learn best if I actually do the stuff.

Where do I get a big data set with some tasks to analyze? Like do x and y, do that kind of plot etc.
Any R Fags here?

Does anyone of you know R?

I kind of have a very specific problem and I can't seem to find a solution for it.

I have a data set where people answered different questions. For example, "how much cigarettes do you smoke a day?"
The answers range from 0-50.
Now I want to extract only the last digit of each number but I seem to be way too stupid to do this.
To make it more clear, Var1 would be the thing I got now and Var2 is what I want out of it.

Var1 Var2
43 3
21 1
4 4
8 8

Can anyone help me with this? Also general data analysis thread.

I want to learn R, basics and advanced stuff. I kind of taught me some things already but I would prefer if I had like actual exercise tasks you know? Some tutorials that give you a data set and let you do stuff yourself would be very nice.

If anyone has a source for something like this or any other general tips on how to learn R, I would apreciate it a lot. Thanks in advance.

Where my niggas at

hi guys ,does anyone here use R?
any suggested guide or book to learn it?
already took a class in econometrics so i hope i can handle myself. btw is R proficiency any good for job interviews?

I have a short (month-long) internship that involves making short programs in R, but I have zero background in programming. Most of the projects go way over my head even though they require very little code. What can I do in a brief period of time so that I'm not totally incompetent? I'm limited in my free time because I have a second job as well. Help me /sci/.

Do you any of you use R? It's GPL, but it's also useful so /g/ doesn't know anything about it. I just bought The Art of R Programming recently. I know some from intro stats, but this book should make me much better if I study it.

R thread?
R thread.
>what do you use R for?
>how long have you been using it?
>current projects?

How do I define recursive formulas in R? Very new to programming, and I'm trying construct a recursive formula, but I keep getting error messages. What I've got:

> y <- function(y) {
+ if(y==1)
+ return(1.5)
+ else
+ return(1.022*function(y-1))

At which point I receive:
Error: unexpected '-' in:
"else
return(1.022*function(y-"

I'm just really confused because I created my code my mimicking a recursive formula (the factorial formula) that I copy+pasted into R which worked just fine, so where's the problem with mine?

I'm going to need the program a lot next year, so I want to get better with it over this summer. Is there a good online course to follow, or a decent book that anyone can reccomend?

Need quick help in R plots.
My axis values are: (0,5,10,15,20,...);
How can one change to:(10,20,30)?

I hate this program more than anything in the world...

Does anyone have any experience with R ?

REAL statisticians use R.

Is there any way to compare variances for multiple sets in R or must I do it two at a time with the var.test function? That obviously means X choose 2, where X is the total data sets.

Regardless, what does /sci/ think of R in general?