search for: pratap_stat

Hello All, I have 8 variables named a b c d e f g h I need to create four variables from these 8 vraibles in R. the new variables are ab,cd,ef,gh. Can anyone pleas help me thanks, Pratap --------------------------------- [[alternative HTML version deleted]]

Hi, Could anyone tell me what is the command used in R to do 1. Differentiation 2. Newton Raphson method (Numerical Analysis in general...) Are there any packages separately for this? Thanks for your help! BR, Shubha [[alternative HTML version deleted]]

Hi Users, This is regarding the paired t-test. I have 5 variables (say) Data$v1,Data$v2,Data$v3,Data$v4,Data$v5 in my data frame. Now, I need to perform a paired t-test on all the possible 10 pairs.How do I set up the pairs table directly and pass those variables in to t-test. Thanks in advance, Pratap --------------------------------- Now you can chat without

Dear R wizes, I have a data.frame of species abundances with column names consisting of 4 letter codes then an underscore and a number like this: abco_1, abco_2, abco_3, psm_1, psme_2, psme_3, etc. I would like to get an identifier for all the abco, and psme and other species etc. I used spec.fact<-substring(names(spec.count),1,4) To make a vector of the first 4 letters of

Hello together, i have a data.frame, like this one: No. Change Date A 123 final 2013-01-15 B 123 error 2013-01-16 C 123 bug fixed 2013-01-17 D 111 final 2013-01-12 and now a want a new data.frame which includes

...le mistakes made while copying ' or manipultaions made to one file and not to the other'. . kind regards, Tom Disclaimer: click here [[alternative HTML version deleted]] ------------------------------ Message: 41 Date: Mon, 20 Aug 2007 10:05:24 +0100 (BST) From: nalluri pratap <pratap_stat at yahoo.co.in> Subject: Re: [R] Differentiation To: Shubha Vishwanath Karanth <shubhak at ambaresearch.com>, r-help at stat.math.ethz.ch Message-ID: <569019.3104.qm at web8610.mail.in.yahoo.com> Content-Type: text/plain try library(numDeriv) ?genD Pratap Shubha Vis...

Hi All, I have 2 data frames as follows: a b c 1 NA 1 2 NA 2 NA 3 3 So "a", "b" are the input values and "c" is the output which I am interested in. NA - Missing values. I used rbind, but its not working. Let me know if anyone can help me Thanks, Pratap --------------------------------- [[alternative

Hi All, Can some one explain me the following error- " Error in "names<-.default" 'names' attribute [1199] must be the same length as the vector [17]". Thanks, Pratap --------------------------------- [[alternative HTML version deleted]]

Hi All, I have vector containing 10 elements(odservations). I need to put this into a matrix, where the matrix should contain only one column. I need this to be done using the cbind command because in the final table I should have a column of attributes( from adifferent vector) and a column of vectors from the matrix above Please suggest me how this can be done Thanks and

Hi All, Is there a way we can delete the empty white space around when we generate any graph/map using R? The final output should be onaly a picture with no white spaces all around. Cheers, Pratap --------------------------------- 5, 50, 500, 5000 - Store N number of mails in your inbox. Click here. [[alternative HTML version deleted]]