search for: r_intro

hello!! say that i have the values of x1 and x2. my x1 has longer length than x2. how am i going to remove the similar values of x1 and x2. Any suggestion?? Thanks in advance!! Cheers, Anisah e f [1,] 17358865 17906353 [2,] 17966995 21295547 [3,] 21306539 27880531 [4,] 27880531 34118702 [5,] 34166504 35395488 [6,] 36111044 36132622 [7,]

...an call a function element-wise The problem, I want to restrict the cumulative population of each circle within 50% of the total population, which will make every row-vector have different length. e.g. the first row-vector have a length of 123, but the second maybe have a length of 141. I checked R_intro, it seems ragged array can do it, but I can't find any material to learn. 1.Can anyone teach me how to creat and manage a matrix with vector of different length? 2.Can anyone teach me 2 or 3 matrices call a function element wise by vectorization? e.g. for (i in 1:10) A[i]^B[i]/C[i] Thank yo...

...ting systems (yes I have FreeBSD and Windows ME both running on my PC, I admit that using R on FreeBSD is much more stable...). As a result I have produced 2 versions of pdf files from the PowerPoint file. All of them can be found from http://www.stat.auckland.ac.nz/~kwan022/pub/R/Introduction/. R_Intro.ppt file is obviously the PowerPoint file. R_Intro_1up_Colour.pdf is for those of you who think the slides are worth of putting in front of students, can do so on OHP. R_Intro_6up_BW.pdf is for black/white handouts printing. For those who have Windows but do not have PowerPoint in the Office sui...

Hi, What functions should I use in order to perform the following steps: 1) Load a particular column (e.g., column 5) from a csv file 2) Append the column 5 to another csv file 3) select those rows that match specific keywords in column 5 [[alternative HTML version deleted]]

Hi, I have a data frame Y with the following information, ORF spectra 1 YAL001C 2 2 YAL005C 21 3 YAL007C 2 4 YAL012W 8 5 YAL016W 24 6 YAL019W 3 7 YAL020C 2 8 YAL021C 7 9 YAL022C 3 10 YAL023C 6 11 YAL026C 2 12 YAL029C 1 13 YAL031C 1 14 YAL035W 48 15 YAL038W 173 16 YAL041W 4 17 YAL042W 4 18

Hello, I'm new to R and would like to know how to create a vector of "rolling sums". (I have seen the Rmetrics package and the rollMean function and I would like to do the same thing except Sum instead of Mean.) I imagine someone has done this, I just can't find it anywhere. Example: x <- somevector #where x is 'n' entries long #what I would like to do is: x1

I have a probably basic problem concerning the R language. I will write some small R programs but don't really know how to start. Do I have to create my files in some editor like emacs or can I write my code in the R prompt? How to compile the code? I haven't found any good manual parts about this subject. regards A.P