similar to: combine 2 data frames with missing values

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 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

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]]

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 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

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

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

Dear list, here are my two data frames: av <- structure(list(DESCRIPTION = c("COFFEE C Sep/10", "COPPER Sep/10", "CORN Dec/10", "CRUDE OIL miNY Sep/10", "GOLD Aug/10", "HENRY HUB NATURAL GAS Sep/10", "PALLADIUM Sep/10", "SILVER Sep/10", "SOYBEANS Nov/10", "SPCL HIGH GRADE ZINC USD", "SUGAR

Hello everyone, My problem is better explained with an example: > x=data.frame(a=1:4,b=1:4,c=rnorm(4)) > x a b c 1 1 1 -0.8821089 2 2 2 -0.7082583 3 3 3 -0.5948835 4 4 4 -1.8571443 > y=data.frame(a=c(1,3),b=3,c=rnorm(2)) > y a b c 1 1 3 -0.273155973 2 3 3 0.009517862 Now I want to merge x and y by columns a and b, hence creating a data.frame with all

Dear list, as a result of a logical operation I want to assign a new variable to a DF with NA-values. z <- data.frame( x = c(5,6,5,NA,7,5,4,NA), y = c(1,2,2,2,2,2,2,2) ) p <- (z$x <= 5) & (z$y == 1) p z[p, "p1"] <-5 z # ok, this works fine z <- z[,-3] p <- (z$x <= 5) & (z$y == 2) p z[p, "p2"] <-5 z # this failed... - how

Hi R-experts, suppose I have a list with containing data frame elements: [[1]] (Intercept) y1 y2 y3 y4 -6.64 0.761 0.383 0.775 0.163 [[2]] (Intercept) y2 y3 -3.858 0.854 0.834 Now I want to put them into ONE dataframe like this: (Intercept) y1

For certain reason, the content was not visible in the last mail, so posting it again. Dear Members, I have two different dataframes with a different number of rows. I need to apply a set of functions to each possible combination of rows with one row coming from 1st dataframe and other from 2nd dataframe. Though I am able to perform this task using for loops, I feel that there must be a more

Dear all, suppose I have a vector with elements as: Vec <- c(2,3,4,5,6) Now I want to have all possible combination of length 3 using those elements and without any repetition. Like, I want to have 1 possibility like 2-3-4 but not 3-2-4. Can somebody guide me how to achieve that in R? Thanks for your help.

Hi All, In openssh, do we support multi-channeling? Rather than opening a new TCP socket for each SSH connection, all the SSH connections are multiplexed into one TCP connection. If so, from which version , do openssh supports it? Thanks Ravi Pratap

I am trying to extract rows from a data.frame based on the presence/absence of a single value in any column. I've figured out how to do get the positive matches, but the remainder (rows without this value) eludes me. Mining the help pages and archives brought me, frustratingly, very close, as you'll see below. My goal: two data frames, one with -99 in at least one column in each row,

Hello, from time to time I keep getting problems with some emails causing signal 6. I've already reported those, but it seems not to be easy to find the cause. From the logs, it seems to occur in sieve implementation. I've checked the email envelopes tody by accident, probably this part of my telnet session might help: a11 fetch 1 all * 1 FETCH (RFC822.SIZE 16750 INTERNALDATE

I'd like to remove duplicated rows within a matrix, with missing data being treated as wildcards. For example > x <- matrix((1:3), 5, 3) > x[4,2] = NA > x[3,3] = NA > x [,1] [,2] [,3] [1,] 1 3 2 [2,] 2 1 3 [3,] 3 2 NA [4,] 1 NA 2 [5,] 2 1 3 I would like to obtain [,1] [,2] [,3] [1,] 1 3 2 [2,] 2 1 3

You appear to be trying to write C code in R. Don't do this. If you can trade off space for efficiency, the calculation can be easily vectorized (assuming I correctly understand what you want to do, of course). set.seed(135) ## for reproducibility D1<-data.frame(x=1:5,y=6:10,z=rnorm(5)) D2<-data.frame(x=19:30,y=41:52,z=rnorm(12)) D.all <-merge(D1,D2, by.x=NULL,by.y=NULL) ##

Hi All, During scp, I am seeing this message protocol error : expected control record This message came because scp sink was expecting the message starting from 'C' or 'D' , something like C0644 299 group or D0755 0 docs but during dns query we were printing "Using IP address" message on the stdout. So , the message in the buffer was "Using IP address" and