similar to: Handling of arrays

Dear R-community, I have some trouble with index mappings for arrays. If, for example, I have the array R> A <- array(1:9, c(3,3,2)) and two index mappings both of same size R> x <- c(2, 3) R> y <- c(1, 2) Now I want to access the elements (A[1, x[i], y[i]])_i of A, i.e. A[1, x[1], y[1]] = A[1, 2, 1] and A[1, x[2], y[2]] = A[1, 3, 2]. If I use R> A[1, x, y] I would get

Dear R-experts, I imported successful a workspace from Matlab. The information is stored in the variable data. If I use the command "length(data)" I get back a number which corresponds to the number of variables which were imported. Here it is 82. Now I only want to know the names of the imported variables to modify my program. Can anyone help me? My knowledge which I tested yet to

Hi in dataframe I want to subtract the "next" value in the list from the former one to get this: name var1 output a 9 506 b 515 512 c 1027 453 so I subtract: table$var1[2]-table$var1[1] and write it into table$output[1] etc.. I did this with: for (i in 1:(length(table$var1)){ table$output[i] <- table$var1[i+1]-table$var1[i] } it works

Hi, I would like to share my experimental LLVM API Python bindings with the LLVM enthusiasts. I have created Boost.Python wrappers largely for the VMCore interface and other selected interfaces (e.g. ExecutionEngine). The bindings provide direct runtime access to the LLVM bytecode and JIT execution features from Python. The bindings are complete enough so that one can e.g. run the Fibonacci

Jarno, This looks like it could be very valuable - thanks for making it available. Just out of curiosity, do you have any specific uses in mind for which you created these bindings? --Vikram http://www.cs.uiuc.edu/~vadve http://llvm.cs.uiuc.edu/ On Feb 23, 2005, at 5:21 PM, Jarno Seppänen wrote: > Hi, > > I would like to share my experimental LLVM API Python bindings with >

Hallo, does a package for Matlab exist in R? If yes, where can I find it and how can I install it under R? Thanks, Corinna

Hello everyone, I've a problem and dont know how to solve. This is my first posting and it would be fantastic if you could help me. I want to divide n objects in k classes and need an output with all (n+1)(n+2)/2 possibilities. For example n=4, k=3: That would be: 4 0 0 3 1 0 3 0 1 2 2 0 2 1 1 2 0 2 1 3 0 1 2 1 1 1 2 1 0 3 0 3 1 0 2 2 0 1 3

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Dear list, I have some trouble generating a frequency table over a number of vectors. Creating these tables over simple numbers is no problem with table() > table(c(1,1,1,3,4,5)) 1 3 4 5 3 1 1 1 , but how can i for example turn: 0 1 0 0 0 1 0 1 0 1 0 0 0 1 0 1 0 0 into 0 0 1 1 1 0 0 2 0 1 0 3 My second problem is, sorting rows and columns of a matrix by the rowSums/colSums. I did it

I tried to get a new configure skript with autoconf and then run it but it didn't work: ludwig@Ludwigsnb:~/wine$ autoconf ludwig@Ludwigsnb:~/wine$ ./configure checking build system type... i686-pc-linux-gnulibc1 checking host system type... i686-pc-linux-gnulibc1 checking whether make sets $(MAKE)... no checking for gcc... gcc checking for C compiler default output file name... configure:

#short example version of input file with 2 runs and 5 time steps (instead of 17 runs and 500 time steps) run t cover 1 1 0.234306 1 2 0.188896 1 3 0.198193 1 4 0.213959 1 5 0.184952 2 1 0.189316 2 2 0.185631 2 3 0.20211 2 4 0.216064 2 5 0.216064 #calculate the correlation of lag 1 over 17 replicates a<-0 for (i in 1:17) { c<-ts( cover[run==i] ) d<-acf( c, lag=1, plot=F) a<-a+d$acf[2]

Hey there, I am wondering if there is any list available giving me a list of feature of icecast (maybe also in comparision with shoutcast). Moreover, I was thinking if and how the following scenario is solved: suppose I'd like to stream 1000 different songs at one time, i.e. 1000 user will listen to different mp3s hosted by my streaming server. Are in this scenario all 1000 songs (at

Hi, I'm drawing a very simple plot with both axes logarithmic (default base 10). Example: vec=c(1,10,100,1000,10000,100000,1000000,10000000) plot(vec,vec,log="xy") The axes on the plot now show the technical notation like 1E+3 but I would prefer to have it the notation 10 ^3 i.e. with the exponent here 3 superscript (raised). Any help very much appreciated! Best Regards Tom --

Dear R-experts, I have got an excel file as attached. I imported it successful with the commands: library(RODBC) channel <- odbcConnectExcel("data2.xls") tables <- sqlTables(channel) # list the names of the spreadsheets name1 <- tables[1, "TABLE_NAME"] # get the name of the 1st spreadsheet plan1 <- sqlQuery(channel, sprintf("select * from [%s]",

Hello to all, after noone bother my subject. I think I'm all alone making mistakes on this thing. But I should really know if it is possible to mange the administration of samba in an comfortable way. After all the years I worked with it I never did manage it to be in an sufficent manner. Is there a plan in the future to have a central administration within the samba package? --------

Hello, I would like to reshape a dataframe into an array. This is kind a similar task as Excel performs with a Pivot table. To illustrate it: LOC <- factor(c(1,2,2,3,1,1)) SPEC1 <- c(0,0,23,0,12,11) SPEC2 <- c(1,2,0,0,0,4) df <- data.frame(LOC,SPEC1,SPEC2) # original dataframe a <-

Repeatedly people have asked how to pass arguments by reference in R. Now package "ref" is on CRAN, which provides two referencing methods: Functions ref(), deref() and friends conveniently allow to pass parameters "by reference" instead of "by value". This can be useful in memory critical applications but requires a more careful programming style to track the

Repeatedly people have asked how to pass arguments by reference in R. Now package "ref" is on CRAN, which provides two referencing methods: Functions ref(), deref() and friends conveniently allow to pass parameters "by reference" instead of "by value". This can be useful in memory critical applications but requires a more careful programming style to track the

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Dear R-Experts, here again a question concerning matlab. With the command "matrixM=[1 2 3;4 5 6]" a matrix under Matlab was constructed. It was than stored with the command "save('matrixM.txt','matrixM')". Now I tried to import the data in R with the help of the command "Z=matrix(scan("Z:/Software/R-Programme/matrixM.txt"))" An error