Albert Picado wrote: > Dear list, > > I am trying to find the way to add columns to a table > (or a matrix) after a loop. The result of this loop is > an array and I would like to get all the results in a > single table once the loop is finish. I have > reproduced a simplified example below: > >> a<- 1 >> b <- matrix() >> while (a <= 4) { > + b<-rnorm(10) > + a<- a +1 > + }
Staying in your example: a <- 1 b <- matrix(nrow=10, ncol=4) while(a <= 4){ b[,i] <- rnorm(10) a <- a + 1 } Uwe Ligges > # I have tried several methods but without succes so > far. > >> result <- as.data.frame(cbind(b)) >> result > b > 1 -0.03250661 > 2 -0.59823770 > 3 1.58120471 > 4 0.41086546 > 5 0.78959090 > 6 1.23587125 > 7 0.83427190 > 8 1.09035581 > 9 0.11331056 > 10 0.25267231 > > the result above is not what I am looking for because > it shows only the results from the last operation in > the loop, I would like to obtain something like the > following. > >> result > b1 b2 b3 b4 > 1 -0.08420826 -0.0637943 -0.83246201 -1.0902384 > 2 0.40623009 -2.7940096 1.37664973 1.6023967 > 3 -1.13850505 1.1660669 -0.95962296 -0.7325098 > 4 -1.06183391 1.1063677 1.67948677 -1.9875475 > 5 -0.64431067 -0.4843952 -1.30742858 0.5064134 > 6 0.56729468 1.0860484 0.07651954 0.4380108 > 7 0.95036177 -0.5328609 1.28954934 -0.2775614 > 8 -0.17848223 0.5340379 -0.22613700 1.0179886 > 9 2.93145454 -1.8639607 -0.25478610 1.6619754 > 10 1.51942415 -0.2051423 0.09144450 -1.6329481 > > I hope someone can give me a hand > > best regards > > a > > > > > > p5.vert.ukl.yahoo.com uncompressed/chunked Sat Aug 12 13:14:00 GMT 2006 > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.