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Dear all, I want the title of the plot to print some parameters that change. Also, I want some spots on the plot to be labeled. Is that possible? Thanks in advance for your help. Minghua

Hi, A simple question. I want to assign values to columns (or rows) of a matrix. It seems that AA[,i]<-A; # A is a vector or array; doesn't work. How can I accomplish that? Thanks alot. -MY

All, I am new in R. I found sqlSave() doesn't work for our Oracle9i. The following was the message: > sqlSave(channel, USArrests, rownames="state") Error in sqlColumns(channel, tablename) : USArrests : table not found on channel Check case parameter in...

Hi, My question goes like this. I have two arrays A and B. I want to exclude from A the elements contained in B. Is there an easy way like A[A != x] to exclude a single one. Thanks for...

Could anyone please explain to me why the following writes nothing into "all.Rout" file? If the "for" loop is removed, t.test output can be written into "all.out". Thanks in advance. Minghua Yao ...... zz <- file("all.Rout", open...

Dear all, I tried the following in R: >library(ROracle) >ora <- dbDriver("Oracle") >channel <- dbConnect(ora, user = "scott", password="tiger",dbname="abcdef") >rs <- dbSendQuery(channel, "select * from USArrests") >while(!dbHasCompleted(rs)) { xxx <- fetch(rs, n = 5000) } + + + > xxx Error: Object "xxx...

Dear all, I am a newbie in R. I encounter a problem as follows. I have 2 vectors X and Y that have a equal length of several thousand. I see Y as the function of X. Both of them...

Hi, all, I want to use lowess(x, y) where x and y are vectors of length of 4000+. In fact, x and y are log of some vectors. So, some of the elements are NaN. lowess() can not take...

Hello, everyone, I am having several basic questions that I haven't found the answer to from the manuals: 1. How to remove "[1]" when a single line message is printed? 2. How to print several variables (e.g., a...

Gurus, I used predict(loess(Y~X)); where Y and X are of the same length. But there are same NA's in both Y and X. Those NA's are in the same locations in Y and X. The...

All, In the following, when I just enter R from UNIX and make a connection to Oracle database, dbHasCompleted(rs) is TRUE. This shouldn't have happened since I haven't fetched any thing. Help will be appreciated. -MY --------------------------------------------------------------------- MyUnixMachine...

Dear all, I have the following output generated by linear regression. Since there is only one regression intercept and one slope for one set of data, what is the meaning of std. error for intercept and that of slope? Thanks...

Thanks, Prof. Ripley. Right. I saw nothing, either, when I tried without "for" loop. Does anywhere in the documents mention that Autoprinting does not work inside a for() {} loop? Minghua -----Original Message----- From: Prof Brian Ripley [mailto:ripley at stats...

Thanks for the reply. xxx<-NULL doesn't help. If I disconnected the connection, then both ---------------------------------------------------------------------------- >channel <- dbConnect(ora, user = "scott", password="tiger", dbname="abcdef") >rs <- dbSendQuery(channel, "select * from USArrests") >while(!dbHasCompleted(rs)) { df <- fetch(rs, n = 5000) } >df...

Thank you for your reply. I didn't find what I needed from the archieves. Maybe, I need to figure out how to search the archieves effectively. I used y<-x[!is.na(x)] to get rid of NA and...

Dear Prof. Ripley, Thank you for your reply. It works fine except for question 3. I got > cat(format(round(z, 2)), "\n") 1134567 May variable z has been rounded to 0 digit behind the point at the very beginning...

Thanks, Ben. Could you tell me the formula for calculating this sd., given (x_i, y_i) (i=1,2,...,N)? We only have one intercept and slope for them. -Minghua -----Original Message----- From: Ben Bolker [mailto:bolker at zoo...

Thank you, Prof. Ripley. By adding na.action=na.exclude to loess function, the program runs great. I did omit some trivial things. But I still think it was NA's that caused troubles in predict or loess. Minghua -----Original...

Thanks, Mr. Graves. This is exactly what I need. -MY -----Original Message----- From: Spencer Graves [mailto:spencer.graves at pdf.com] Sent: Saturday, September 27, 2003 8:34 AM To: bolker at zoo.ufl.edu Cc: Yao, Minghua; R Help...

I still haven't found out from the mail archieves How to get the LOWESS or LOESS fitting values for any elements in x? Help please. Thanks. -MY -----Original Message----- From: Prof Brian Ripley [mailto:ripley at stats.ox.ac...