search for: iliketurtl

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2011 Dec 26
4
Other ways to lm() regression? (non-loop?)
Hi, I'm quite new to R (1 month full time use so far). I have to run loop regressions VERY often in my work, so I would appreciate some new methodology that I'm not considering. #--------------------------------------------------------------------------------------------- y<-matrix(rnorm(100),ncol=10,nrow=10) x<-matrix(rnorm(50),ncol=5,nrow=10) #Suppose I want to run the
2012 Mar 24
3
Handling 8GB .txt file in R?
Hi, I am mediocre at R, maybe 1000 hours experience, but I received an 8GB dataset and I don't know what to do with it. I have to do extensive analysis over it for my Honours thesis. I can't even import it. I've tried; - Splitting it up using the free csv-splitter-1.1.zip that seems to be working for everyone else (it doesn't work for me, it just outputs 1 single line). -
2012 Jan 01
3
rep() inside of lm()?
HI all, I'm new to R. Say I have a multi-layered list called newlist. ############ > str(newlist) List of 2 $ :List of 5 ..$ : num [1:8088] NA 464 482 535 557 ... ..$ : num [1:8088, 1:2] NA 464 482 535 557 ... ..$ : num [1:8088, 1:3] NA 464 482 535 557 ... ..$ : num [1:8088, 1:4] NA 464 482 535 557 ... ..$ : num [1:8088, 1:5] NA 464 482 535 557 ... $ :List of 3 ..$ : num
2012 Jan 04
3
problem in R
hello sir, i m a student of bioinformatics,i hv a problem in R, i want to do correlation analysis of microarray data,hw can i ignore the "NA" value for the calculation or correlation.this is a very large data n many empty fields they giving me NA values of correlation,wat i do??? please help me. Regards MUKUL [[alternative HTML version deleted]]
2012 May 04
2
Can't import this 4GB DATASET
Dear Experienced R Practitioners, I have 4GB .txt data called "dataset.txt" and have attempted to use *ff, bigmemory, filehash and sqldf *packages to import it, but have had no success. The readLines output of this data is: readLines("dataset.txt",n=20) [1] " "
2012 Jan 10
2
How to make this for() loop memory efficient?
##I have 2 columns of data. The first column is unique "event IDs" that represent a phone call made to a customer. ###So, if you see 3 entries together in the first column like follows: matrix(c("call1a","call1a","call1a") ) ##then this means that this particular phone call (the first call that's logged in the data set) was transferred ##between 3
2011 Dec 31
2
Very strange function() behaviour.
Hi, R newb here. I've coded a function that inputs N dimensional array(s) [or class=numeric if it's dim=1] of coefficients and tstats, where dim(coef_matrix)=dim(tstat_matrix), it will then output a same dimension matrix of coefficients pasted to tstats in brackets pasted to significance stars. If I go straight to the code INSIDE the function, it works 100% as it's supposed to. The