search for: manupulation

Could someone tell me how to fix the following error? It looks like that the reason is that df$x is of the class "factor". Thanks! > x1<-LETTERS[1:8]; x2<-letters[1:8]; x1[2]<-NA; x1[4]<-NA; > df<-data.frame(x1=x1, x2=x2) > idx<-which(is.na(df$x1)) > df[idx,1]<-df[idx,2] Warning message: invalid factor level, NAs generated in:

I am trying to use SOM package to cluster some gene expression data. I got stuck with 2 questions and can't not find any documents to resolve these matters. I would really appreciate if anybody can shed some sort of light. Q1. I clustered the data using SOM function and plotted it using plot function. But I can't figure out how I can list the data elements belongs to different clusters. I

Hi, If I use x<-1:10 y<-rnorm(10,0,1) ### pdf(file="c:\\aldi\\test.pdf") plot(x,y) segments(x,y,x+2,y+2) segments(x,y,x+0.5,y+0.5,col=3) ### dev.off() ### q() Is there a way that I can imbed in the graph plot for each point defined by x to x+0.5 and y to y+0.5 (and colored in green) a different hyperlink? For example point one (together with the green tail) will have the

In real world, data manipulation might take even longer time and more effort than statistical analysis and modeling. Does anyone know a good book and tutorial about data manupulation? Thank you so much. -- WenSui Liu, MS MA Senior Decision Support Analyst Division of Health Policy and Clinical Effectiveness

I''ve been trying to get a handle on AJAX today and am ready to call "BUG!" I started with the code from Curt''s "AJAX on Rails". It used <ul="my_list"> and <li> and worked fine. Except I need a table instead of a list. So I did the simplest thing that I thought could possibly work. In the view, I changed the :position attribute from

Hello , i have 2 questions 1 - how to use shorewall GUI using webming , i found nothing in the doc. 2 - after starting shorewall , is there a way to see the user connections status? Thanks Wahid

Hi all! I want to use 'acl group control' setting to delegate privileges to specific administrators. Unfortunately, I'm unable to set the primary group using windows file permissions dialog, I can only add and remove ACL groups. I tried to do this by removing all groups but one from Windows. This doesn't work: the primary group has all privs removed and the extra group is

hi, ? i am very new to samba and have run into an issue with setting up directory/file permissions. ? i have a nfs share on redhat 6 linux server that a group of users will share. basically each user will run their own respective jobs and save the logs in this share. my issue is that? all of the users are able to delete each others files, which i do not want ? can somebody please help me setup

...; > > > Am Samstag, 12. M?rz 2005 15:08 schrieb Wensui Liu: > > > In real world, data manipulation might take even longer time and > > > more effort than statistical analysis and modeling. > > > > > > Does anyone know a good book and tutorial about data manupulation? > > > Thank you so much. > > > > Well, it would be much easier to meet your demands if you could give > > us an idea what you exactly looking for. > > Anyway, there are some recommendations in R-Manual regarding > > introduxtory materials on doing statistics...

Hello all, Im Fran, and im from Spain. Im currently using an english book to setup my samba server, and im having problems understanding it. I explain my problem. I dont want to use root to join clients to the domain; i prefer creating a plain user. Ok, so, the steps i follow are: net groupmap add unixgroup=srvadmins ntgroup="Server Admins" net groupmap add ntgroup="Domain

Hi all there Can some one clarify me on this issue, features wise which is better R or SAS, leaving the commerical aspect associated with it. I suppose there are few people who have worked on both R and SAS and wish they would be able to help me in deciding on this. THank you for the help --------------------------------- [[alternative HTML version deleted]]

Hi all, My environment is ruby-1.8.4, rails 1.2.2, mongrel 1.0.1, linux 2.6. Now, i have a problem on memory leaks with mongrel. My site is running 5 mongrel processes on a 2G RAM machine, the memory of each process grows from about 20M to about 250M, but it never recover to the initial 20M, so i had to restart the mongrel processes once per day. The load is about 1M hits per day. Waiting for