search for: ophir

Hi, I am trying to apply two different functions on on a vector as follow: a<-c(NA,1,2,3,-3,-4,-6) if a>0 I would like to raise it by the power of 2: 2^a and if the a<0 I would like to have the inverse value, i.e., -1/2^a. so I thought of doing it two steps: a[a>0]<-2^[a>0] a[a<0]<-(-1)/2^a[a<0] I got the following error Error: NAs are not allowed in subscripted

Hi, I'm trying to understand environment object in R. I used the example: f <- function(x) { y <- 10 g <- function(x) x + y return(g) } h <- f() h(3) then i saw that f return an environment > h function(x) x + y <environment: 01B28570> but I coudn't access to x and y object in that environment: I tried

Dear supporter, Can you tell me please how can I mirroring R at our site? One of the reasons I would like to do this is the fact that it is impossible to update R behind our firewalls. Thank in advance Ron Ophir, Ph.D. Bioinformatician, Biological Services Weizmann Institute of Science POB 26 Rehovot 76100 Israel e-mail: Ron.Ophir at weizmann.ac.il Phone: 972-8-9342614 Fax:972-8-9344113

Dear group members, I am trying to install R2HTML on PC, but keep getting the following error message: Error in testRversion(descfile) : This package has not been installed properly See the Note in ?library Can any help me with this? thanks in advance, Ron [[alternate HTML version deleted]]

Dear group members, I am trying to plot two adjacent plots using layout function. One plot is scatter plot and the other is density plot. However, I would like that the density plot would be present horizonaly in respect to the scatter plot. | | | | | | |

Dear all, I am trying to run cloud function in lattice library under r-1.7, and I wlways get gray background. I've tried to chang it by set "...par.box=list(col="white")" or by gpar(background="white") but no result. How do i do it? Thanks in advance, Ron

dear group members, I am looking for a function that assess the stability of cluster. The result of hclust function is an hclust object which can be plot as a dendrogram. However to have confidence in the tree topology usualy bootstap is applied. I understand that I can apply bootstarp on the original data and then run hclust(dist() ) as much as I resampled but how to comapre the topologies the I

Dear All, I have two distributions which I don't their nature. I want to check whether they come from the same distribution. I know that I can use KS test however the standart function ks.test applies only the ks test for testing the difference of two samples (non-parametric). By the way the distribution are of Euclidean distances. One of observed and the other of shuffled data. Thanks, Ron

Dear All, I installed R on linux red-hat 7.3. I tried to run getBioC() script, which download R packages from bioconductor site, but I get the followin error message: Error in getBioC() : Your R is not currently configured to allow HTTP connections, which is required for getBioC to work properly. How do I configure R correctly? Thanks, Ron