[R] browser() can not stop the execution

2009-11-15 Thread chao83
I need to use browser() to stop a while loop to input some value for the loop. But the browser() just will not stop until the last line of the code. Does anyone know the possible reason? I use ggobi in the loop, and open a few ggobi windows before the browser(), will that be the reason? Thanks A

Re: [R] re move row if the column date_abandoned has a date in it

2009-11-15 Thread frenchcr
sorry David, im really new to R (my first week) and appreciate your help. Also I dont always know what info to give people on the forum (although im starting to catch the drift). heres what i get... summary(new_data4$date_abandoned) Min.1st Qu.Median Mean 3rd Qu.

[R] R crashing

2009-11-15 Thread Dimitri Szerman
Hello, This is what I am trying to do: I wrote a little function that takes addresses (coordinates) as input, and returns the road distance between every two points using Google Maps. Catch is, there are 2000 addresses, so I have to get around 2x10^6 addresses. On my first go, this is what I did:

Re: [R] R crashing

2009-11-15 Thread Barry Rowlingson
On Sun, Nov 15, 2009 at 11:10 AM, Dimitri Szerman dimitri...@gmail.com wrote: Hello, This is what I am trying to do: I wrote a little function that takes addresses (coordinates) as input, and returns the road distance between every two points using Google Maps. Catch is, there are 2000

Re: [R] R crashing

2009-11-15 Thread Dimitri Szerman
2009/11/15 Barry Rowlingson b.rowling...@lancaster.ac.uk On Sun, Nov 15, 2009 at 11:10 AM, Dimitri Szerman dimitri...@gmail.com wrote: Hello, This is what I am trying to do: I wrote a little function that takes addresses (coordinates) as input, and returns the road distance between

Re: [R] browser() can not stop the execution

2009-11-15 Thread jim holtman
How are you executing your script? Are you doing a cut/paste into the command window? On WIndows using Tinn-R, this procedure will invoke 'browser' and it will then continue to read the rest of the script since it is coming from the standard input. The way around it is to put the script in a

Re: [R] naive collinear weighted linear regression

2009-11-15 Thread Mauricio O Calvao
Peter Dalgaard p.dalgaard at biostat.ku.dk writes: The point is that R (as well as almost all other mainstream statistical software) assumes that a weight means that the variance of the corresponding observation is the general variance divided by the weight factor. The general variance is

Re: [R] R crashing

2009-11-15 Thread Barry Rowlingson
On Sun, Nov 15, 2009 at 11:57 AM, Dimitri Szerman dimitri...@gmail.com wrote: Thanks. The reason I didn't want to do something like that is because, in the event of a crash, I'll loose everything that was done. That's why I though of appending the results often. Oops yes, I missed the

[R] Presentation of data in Graphical format

2009-11-15 Thread Sunita22
Hello My data contains following columns: 1st column: Posts (GM, Secretary, AM, Office Boy) 2nd Column: Dept (Finance, HR, ...) 3rd column: Tasks (Open the door, Fix an appointment, Fill the register, etc.) depending on the post 4th column: Average Time required to do the

[R] lme model specification

2009-11-15 Thread Green, Gerwyn (greeng6)
Dear all this is a question of model specification in lme which I'd for which I'd greatly appreciate some guidance. Suppose I have data in long format gene treatment rep Y 11 1 4.32 11 2 4.67 11 3 5.09 .. .. .. .. .

Re: [R] naive collinear weighted linear regression

2009-11-15 Thread Mauricio O Calvao
David Winsemius dwinsemius at comcast.net writes: It's really not that difficult to get the variance covariance matrix. What is not so clear is why you think differential weighting of a set that has a perfect fit should give meaningfully different results than a fit that has no

Re: [R] re move row if the column date_abandoned has a date in it

2009-11-15 Thread David Winsemius
On Nov 14, 2009, at 8:43 PM, frenchcr wrote: sorry David, im really new to R (my first week) and appreciate your help. Also I dont always know what info to give people on the forum (although im starting to catch the drift). heres what i get... summary(new_data4$date_abandoned) Min.

[R] update.lm question

2009-11-15 Thread Karsten Weinert
Hello, at the Rgui command line I can easily remove a term from a fitted lm object, like fit - lm(y~x1+x2+x3, data=myData) update(fit, .~.-x1) However, I would like to do this in a function with term given as string, like removeTerm - function(linModel, termName) { ??? } removeTerm(fit, x1)

Re: [R] Error running lda example from Help File (MASS library )

2009-11-15 Thread David Winsemius
On Nov 14, 2009, at 7:02 PM, Greg Riddick wrote: Hello all, I'm trying to run lda() from the MASS library but the Help example generates the following error: #Code from example in lda Help file no code included # Resulting Error Error in if (targetlist[i] == stringname) { : argument is

Re: [R] update.lm question

2009-11-15 Thread David Winsemius
You need to review: ?update ?update.formula ?as.formula The way should be clear at that point. If not, then include a reproducible data example to work with. -- David On Nov 15, 2009, at 9:23 AM, Karsten Weinert wrote: Hello, at the Rgui command line I can easily remove a term from a

[R] where is a value in my list

2009-11-15 Thread Grzes
I heve got a list: lista=list() a=c(2,4,5,5,6) b=c(3,5,4,2) c=c(1,1,1,8) lista[[1]]=a lista[[2]]=b lista[[3]]=c lista [[1]] [1] 2 4 5 5 6 [[2]] [1] 3 5 4 2 [[3]] [1] 1 1 1 8 I would like to know where is number 5 (which line)? For example I have got a loop: k= vector(mode

[R] Relase positive with log and zero of negative with 0

2009-11-15 Thread rkevinburton
This is a very simple question but I couldn't form a site search quesry that would return a reasonable result set. Say I have a vector: x - c(0,2,3,4,5,-1,-2) I want to replace all of the values in 'x' with the log of x. Naturally this runs into problems since some of the values are negative

Re: [R] Presentation of data in Graphical format

2009-11-15 Thread milton ruser
Google R graph grallery Google R ggplot2 Google R lattice and good luck milton On Sun, Nov 15, 2009 at 7:48 AM, Sunita22 sunita...@gmail.com wrote: Hello My data contains following columns: 1st column: Posts (GM, Secretary, AM, Office Boy) 2nd Column: Dept (Finance, HR, ...) 3rd column:

Re: [R] where is a value in my list

2009-11-15 Thread David Winsemius
On Nov 15, 2009, at 10:01 AM, Grzes wrote: I heve got a list: lista=list() a=c(2,4,5,5,6) b=c(3,5,4,2) c=c(1,1,1,8) lista[[1]]=a lista[[2]]=b lista[[3]]=c lista [[1]] [1] 2 4 5 5 6 [[2]] [1] 3 5 4 2 [[3]] [1] 1 1 1 8 I would like to know where is number 5 (which line)? For example I

Re: [R] Relase positive with log and zero of negative with 0

2009-11-15 Thread Berwin A Turlach
G'day Kevin, On Sun, 15 Nov 2009 7:18:18 -0800 rkevinbur...@charter.net wrote: This is a very simple question but I couldn't form a site search quesry that would return a reasonable result set. Say I have a vector: x - c(0,2,3,4,5,-1,-2) I want to replace all of the values in 'x' with

Re: [R] Relase positive with log and zero of negative with 0

2009-11-15 Thread David Winsemius
On Nov 15, 2009, at 10:18 AM, rkevinbur...@charter.net wrote: This is a very simple question but I couldn't form a site search quesry that would return a reasonable result set. Say I have a vector: x - c(0,2,3,4,5,-1,-2) I want to replace all of the values in 'x' with the log of x.

Re: [R] package tm fails to remove the with remove stopwords

2009-11-15 Thread Ingo Feinerer
On Thu, Nov 12, 2009 at 11:29:50AM -0500, Mark Kimpel wrote: I am using code that previously worked to remove stopwords using package tm. Thanks for reporting. This is a bug in the removeWords() function in tm version 0.5-1 available from CRAN: require(tm) myDocument - c(the rain in Spain,

Re: [R] sum(row1==y) if row2=x

2009-11-15 Thread Knut Krueger
Thanks to all R is fantastic but ... not easy to know all possible terms ;-) Knut __ R-help@r-project.org 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

Re: [R] update.lm question

2009-11-15 Thread Karsten Weinert
Hello David, of course I read those help pages and searched the r-help archive. I agree that the way should be clear, but I am stuck and looking for help. Here is reproducible code removeTerm1 - function(linModel, termName) { update(linModel, .~. - termName) } removeTerm2 - function(linModel,

Re: [R] update.lm question

2009-11-15 Thread Duncan Murdoch
On 15/11/2009 9:23 AM, Karsten Weinert wrote: Hello, at the Rgui command line I can easily remove a term from a fitted lm object, like fit - lm(y~x1+x2+x3, data=myData) update(fit, .~.-x1) However, I would like to do this in a function with term given as string, like removeTerm -

Re: [R] R crashing

2009-11-15 Thread Dimitri Szerman
So here's the funny thing: I've now ran my function 5 times, and in each one of them R crashes after I got around 20.000 distances. It could be google, but then as soon as I quit and launch R again, I manage to get another 20.000 distances. So maybe it does have something to do with the memory

Re: [R] where is a value in my list

2009-11-15 Thread Grzes
But it's not what I wont I need get a number of line my list 5 is in: list[[1]][1] and list[[2]][1] so I would like to get a vector k = 1,2 David Winsemius wrote: On Nov 15, 2009, at 10:01 AM, Grzes wrote: I heve got a list: lista=list() a=c(2,4,5,5,6) b=c(3,5,4,2) c=c(1,1,1,8)

Re: [R] where is a value in my list

2009-11-15 Thread David Winsemius
On Nov 15, 2009, at 10:47 AM, Grzes wrote: But it's not what I wont I need get a number of line my list 5 is in: list[[1]][1] and list[[2]][1] so I would like to get a vector k = 1,2 I am sorry. I do not understand what you want the second solution offered gave you numbers (and they

Re: [R] update.lm question

2009-11-15 Thread David Winsemius
On Nov 15, 2009, at 11:15 AM, Karsten Weinert wrote: Hello David, of course I read those help pages and searched the r-help archive. But did you look at the as.formula page? I agree that the way should be clear, but I am stuck and looking for help. Here is reproducible code And here is

[R] JGR GUI for R-2.10.0 Help Print

2009-11-15 Thread Bob Meglen
I have updated R 2.9.1 to 2.10.0. and JGR GUI 1.7. I am running Windows XP. I can't seem to get the JGR Print or Help functions to work. The system locks and requires me to stop the process. In the past I have preferred the opreation and feel of JGR GUI. I realize that this help forum is for

[R] resampling problem counting number of means above a specific value

2009-11-15 Thread Graham Smith
I am trying to modify some code from Good 2005. I am trying to resample the mean of 8 values and then count how many times the resampled mean is greater than 10. But my count of means above 10 is coming out as zero, which I know isn't correct. I would appreciate it if someone could look at the

Re: [R] update.lm question

2009-11-15 Thread Duncan Murdoch
On 15/11/2009 11:28 AM, Duncan Murdoch wrote: On 15/11/2009 9:23 AM, Karsten Weinert wrote: Hello, at the Rgui command line I can easily remove a term from a fitted lm object, like fit - lm(y~x1+x2+x3, data=myData) update(fit, .~.-x1) However, I would like to do this in a function with term

Re: [R] resampling problem counting number of means above a specific value

2009-11-15 Thread David Winsemius
On Nov 15, 2009, at 12:12 PM, Graham Smith wrote: I am trying to modify some code from Good 2005. I am trying to resample the mean of 8 values and then count how many times the resampled mean is greater than 10. But my count of means above 10 is coming out as zero, which I know isn't

Re: [R] update.lm question

2009-11-15 Thread Karsten Weinert
Thanks Duncan and David for opening my eyes :-). It took quite a while but I think I learned a lot about lm today. I used your advice to produce added variable plots as mentioned here [1], [2]. I would bet someone did it in R already (may leverage.plot in car) but it was worth doing it myself.

Re: [R] resampling problem counting number of means above a specific value

2009-11-15 Thread Dimitris Rizopoulos
try the following: LL - c(12.5,17,12,11.5,9.5,15.5,16,14) n - length(LL) N - 1000 threshold - 10 smpls - sample(LL, N*n, replace = TRUE) dim(smpls) - c(n, N) cnt - sum(colMeans(smpls) threshold) cnt I hope it helps. Best, Dimitris Graham Smith wrote: I am trying to modify some code from

Re: [R] resampling problem counting number of means above a specific value

2009-11-15 Thread Graham Smith
David, Thanks, its me getting mixed up I actually meant less than or equal to 10. That apart, I guess the code is OK, I just expected, especially as I increased N that I might have got some means less than 10, but having gone back to it , I see I need a million iterations before getting two

Re: [R] lme model specification

2009-11-15 Thread Douglas Bates
On Sun, Nov 15, 2009 at 7:19 AM, Green, Gerwyn (greeng6) g.gre...@lancaster.ac.uk wrote: Dear all this is a question of model specification in lme which I'd for which I'd greatly appreciate some guidance. Suppose I have data in long format gene treatment rep Y 1        1      1  4.32 1  

Re: [R] resampling problem counting number of means above a specific value

2009-11-15 Thread Graham Smith
Dimitris, Thanks, I shall give this a try as an alternative. Graham 2009/11/15 Dimitris Rizopoulos d.rizopou...@erasmusmc.nl: try the following: LL - c(12.5,17,12,11.5,9.5,15.5,16,14) n - length(LL) N - 1000 threshold - 10 smpls - sample(LL, N*n, replace = TRUE) dim(smpls) - c(n, N)

Re: [R] gregmisc library (Mandriva)

2009-11-15 Thread Paul Johnson
On Sat, Oct 3, 2009 at 9:18 AM, chi ball c...@hotmail.it wrote: Hi, I'm not able to find a rpm of gregmisc library (2.0.0)  for Linux Mandriva 2008 Spring. Any suggestion? Thanks If you don't find an up to date RPM, either you have to learn how to build an RPM or just install the package

[R] Help with unstack() function

2009-11-15 Thread Tariq Perwez
Hi Everyone, I am trying to understand the unstack() function but after struggling for two days, I have given up. More specifically, I am trying the exercises at the end of Chapter 1 of Data Analysis and Graphics Using R by Maindonald and Braun, 2nd ed. Exercise 18 (p. 41) asks to unstack the

[R] wilcox.test loop through variable names

2009-11-15 Thread Jacob Wegelin
Often I perform the same task on a series of variables in a dataframe, by looping through a character vector that holds the names and using paste(), eval(), and parse() inside the loop. For instance: rm(environmental) thesevars-names(environmental) environmental$ToyReal

Re: [R] multivariate meta-analysis with the metafor package

2009-11-15 Thread Viechtbauer Wolfgang (STAT)
Dear Antonio, Yes, I am currently working on these extensions. It will take some time before those functions are sufficiently tested and documented and can become part of the metafor package. My goal is to do so within the next year, but I cannot give any specific date for when this will be

Re: [R] re move row if the column date_abandoned has a date in it

2009-11-15 Thread frenchcr
this works perfectly... new_data5 - new_data4[nchar(new_data4$date_abandoned) != 8, ] ...and i can now think of a few different ways to manipulate my data with what ive learned from these tricks, thanks alot David! David Winsemius wrote: On Nov 15, 2009, at 11:00 AM, frenchcr wrote:

[R] Finding Largest(or smallest) values

2009-11-15 Thread alphaace
Hi, I am trying to find a model of best fit, with 8 parameters. As such, I have created a table with 2^8=256 rows with every variable either in or out of the model(denoted by 1 or 0), and for each row, I have computed the Adjusted R^2, AIC, CP and Press. I know I can use the leaps package to

Re: [R] where is a value in my list

2009-11-15 Thread Grzes
It's excellent! Now, if I have a vector k=c( TRUE, TRUE, FALSE) how I may get lines from list? which (list ?? k) ? David Winsemius wrote: On Nov 15, 2009, at 10:47 AM, Grzes wrote: But it's not what I wont I need get a number of line my list 5 is in: list[[1]][1] and list[[2]][1]

Re: [R] where is a value in my list

2009-11-15 Thread David Winsemius
The term line in R refers to a sequence of text ending in and EOL marker, which I doubt is what you meant. Please stop referring to the items or elements of a list as lines if you hope to communicate with R-users. lista[1:2] [[1]] [1] 2 4 5 5 6 [[2]] [1] 3 5 4 2 lista[

[R] how to permute, simulate Markov chain

2009-11-15 Thread martin08
Hi all, I am new to R. Can someone please give me some hints in how to do the following things: 1- Get ONE permutation of a set. I have looked at the gregmisc package's permutations() method, but I just want to get one permutation at a time. 2- Simulate a Markov chain in R. For instance, I

Re: [R] how to permute, simulate Markov chain

2009-11-15 Thread David Winsemius
On Nov 15, 2009, at 4:11 PM, martin08 wrote: Hi all, I am new to R. Can someone please give me some hints in how to do the following things: 1- Get ONE permutation of a set. I have looked at the gregmisc package's permutations() method, but I just want to get one permutation at a time.

[R] How to get the string '\'?

2009-11-15 Thread Peng Yu
I can not get the string '\'. Could somebody let me know how to get it? print('\') + + print('\\') [1] \\ __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide

Re: [R] Finding Largest(or smallest) values

2009-11-15 Thread Joe King
There are probably better ways but cant you subset each parameter? So create new variables for parameter 1, 2, ... and look at the summary data for those which will include a min and max for all variables. Joe King 206-913-2912 j...@joepking.com Never throughout history has a man who lived a life

Re: [R] How to get the string '\'?

2009-11-15 Thread David Winsemius
?cat cat(\\) \ On Nov 15, 2009, at 5:30 PM, Peng Yu wrote: I can not get the string '\'. Could somebody let me know how to get it? print('\') + + print('\\') [1] \\ __ R-help@r-project.org mailing list

[R] Basic Question about local

2009-11-15 Thread Saptarshi Guha
I have some beginner's questions regarding local, in the docs, it says that local evaluates an expression in a local environment. Q1: why is B different from A? In B, is a-a+1 getting evaluated before eval proceeds? #A a=0 eval(quote(a-a+1),new.env()) a # 0 #B a=0 eval(a-a+1,new.env()) a # 1

[R] pairs

2009-11-15 Thread cindy Guo
Hi, All, I have an n by m matrix with each entry between 1 and 15000. I want to know the frequency of each pair in 1:15000 that occur together in rows. So for example, if the matrix is 2 5 1 6 1 7 8 2 3 7 6 2 9 8 5 7 Pair (2,6) (un-ordered) occurs together in rows 1 and 3. I want to return the

Re: [R] How to get the string '\'?

2009-11-15 Thread Peng Yu
My question was from replacing a pattern by '\\'. How to replace '/' in string by '\'? string='abc/efg' gsub('/','\\',string) On Sun, Nov 15, 2009 at 5:07 PM, David Winsemius dwinsem...@comcast.net wrote: ?cat cat(\\) \ On Nov 15, 2009, at 5:30 PM, Peng Yu wrote: I can not get the

Re: [R] How to get the string '\'?

2009-11-15 Thread Linlin Yan
Regular expression needs double the '\' again, so try this: gsub('/','',string) On Mon, Nov 16, 2009 at 7:35 AM, Peng Yu pengyu...@gmail.com wrote: My question was from replacing a pattern by '\\'. How to replace '/' in string by '\'? string='abc/efg' gsub('/','\\',string)

Re: [R] How to get the string '\'?

2009-11-15 Thread David Winsemius
On Nov 15, 2009, at 6:35 PM, Peng Yu wrote: My question was from replacing a pattern by '\\'. How to replace '/' in string by '\'? string='abc/efg' gsub('/','\\',string) No, that was most definitely _not_ your posed question. If you want now to change your question and supply a

Re: [R] pairs

2009-11-15 Thread cls59
cindy Guo wrote: Hi, All, I have an n by m matrix with each entry between 1 and 15000. I want to know the frequency of each pair in 1:15000 that occur together in rows. So for example, if the matrix is 2 5 1 6 1 7 8 2 3 7 6 2 9 8 5 7 Pair (2,6) (un-ordered) occurs together in rows

Re: [R] pairs

2009-11-15 Thread Linlin Yan
Hope this help: m - matrix(c(2,1,3,9,5,7,7,8,1,8,6,5,6,2,2,7),4,4) p - c(2, 6) apply(m == p[1], 1, any) apply(m == p[2], 1, any) [1] TRUE FALSE TRUE FALSE If you want the number of rows which contain the pair, sum() could be used: sum(apply(m == p[1], 1, any) apply(m == p[2], 1, any))

Re: [R] How to get the string '\'?

2009-11-15 Thread Peng Yu
On Sun, Nov 15, 2009 at 6:05 PM, David Winsemius dwinsem...@comcast.net wrote: On Nov 15, 2009, at 6:35 PM, Peng Yu wrote: My question was from replacing a pattern by '\\'. How to replace '/' in string by '\'? string='abc/efg' gsub('/','\\',string) No,  that was most definitely _not_

[R] Normalization of Data

2009-11-15 Thread Abhishek Pratap
Hi All I am looking for some resource to learn data normalization. I understand I am talking very broad here, I need something like a primer to give me a jump start. If you happen to know any good resource please do let me know. Cheers, -Abhi [[alternative HTML version deleted]]

Re: [R] pairs

2009-11-15 Thread cindy Guo
Hi, Charlie, Thank you for the reply. Maybe I don't need the frequency of each pair. I only need the top, say 50, pairs with the highest frequency. Is there anyway which can avoid calculating for all the pairs? Thanks, Cindy On Sun, Nov 15, 2009 at 4:18 PM, cls59 ch...@sharpsteen.net wrote:

Re: [R] pairs

2009-11-15 Thread David Winsemius
I could of course be wrong but have you yet specified the number of columns for this pairing exercise? On Nov 15, 2009, at 5:26 PM, cindy Guo wrote: Hi, All, I have an n by m matrix with each entry between 1 and 15000. I want to know the frequency of each pair in 1:15000 that occur

[R] How to name a tag in a list or a data.frame from a string?

2009-11-15 Thread Peng Yu
Suppose I have a string variable string='some_string' Now I want to have a list, where tag is the same as the string in the variable string. I'm wondering if this is possible in R. list(tag=1:3) data.frame(tag=1:3) __ R-help@r-project.org mailing

Re: [R] pairs

2009-11-15 Thread David Winsemius
Assuming that the number of columns is 4, then consider this approach: prs -scan() 1: 2 5 1 6 5: 1 7 8 2 9: 3 7 6 2 13: 9 8 5 7 17: Read 16 items prmtx - matrix(prs, 4,4, byrow=T) #Now make copus of x.y and y.x pair.str - sapply(1:nrow(prmtx), function(z) c(apply(combn(prmtx[z,], 2),

Re: [R] How to name a tag in a list or a data.frame from a string?

2009-11-15 Thread Duncan Murdoch
On 15/11/2009 8:15 PM, Peng Yu wrote: Suppose I have a string variable string='some_string' Now I want to have a list, where tag is the same as the string in the variable string. I'm wondering if this is possible in R. list(tag=1:3) data.frame(tag=1:3) The most straightforward way is x -

[R] How to make all elements all elements lower-cap ?

2009-11-15 Thread RON70
I have a vector of letters like c(a, B, c). Is there any R function to force all elements to lower-cap ? Thanks, -- View this message in context: http://old.nabble.com/How-to-make-all-elements-all-elements-lower-cap---tp26365794p26365794.html Sent from the R help mailing list archive at

Re: [R] How to make all elements all elements lower-cap ?

2009-11-15 Thread jim holtman
try this: x - c(a, B, c) ?tolower tolower(x) [1] a b c On Sun, Nov 15, 2009 at 8:45 PM, RON70 ron_michae...@yahoo.com wrote: I have a vector of letters like c(a, B, c). Is there any R function to force all elements to lower-cap ? Thanks, -- View this message in context:

Re: [R] How to make all elements all elements lower-cap ?

2009-11-15 Thread Jorge Ivan Velez
Hi Ron, Yes. Take a look at ?tolower HTH, Jorge On Sun, Nov 15, 2009 at 8:45 PM, RON70 wrote: I have a vector of letters like c(a, B, c). Is there any R function to force all elements to lower-cap ? Thanks, -- View this message in context:

[R] How to generate dependency file that can be used by gnu make?

2009-11-15 Thread Peng Yu
gcc has options like -MM, which can generate the dependence files for a C/C++ file that I can be used by gnu make. I'm wondering if there is a tool that can generate dependence file for an R script. For example, I have an R script test.R #test.R load('input.RData')

Re: [R] wilcox.test loop through variable names

2009-11-15 Thread Jacob Wegelin
On Sun, 15 Nov 2009 14:33 -0500, Jacob Wegelin jacobwege...@fastmail.fm wrote: Often I perform the same task on a series of variables in a dataframe, by looping through a character vector that holds the names and using paste(), eval(), and parse() inside the loop. For instance:

Re: [R] pairs

2009-11-15 Thread cindy Guo
Hi, David, The matrix has 20 columns. Thank you very much for your help. I think it's right, but it seems I need some time to figure it out. I am a green hand. There are so many functions here I never used before. :) Cindy On Sun, Nov 15, 2009 at 5:19 PM, David Winsemius

Re: [R] Normalization of Data

2009-11-15 Thread Kenneth Roy Cabrera Torres
What do you mean with normalization? Maybe you are looking for scale function on R. El dom, 15-11-2009 a las 16:29 -0800, Abhishek Pratap escribió: Hi All I am looking for some resource to learn data normalization. I understand I am talking very broad here, I need something like a primer

[R] How to use SQL code in R

2009-11-15 Thread sdlywjl666
Dear All, How to use SQL code in R? Thanks! [[alternative HTML version deleted]] __ R-help@r-project.org 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

Re: [R] Simple if else statement problem

2009-11-15 Thread Petr PIKAL
Hi r-help-boun...@r-project.org napsal dne 13.11.2009 18:54:05: Ok Jim it worked, thank you! it´s funny because it worked with the first syntax in some cases... you can use another approach in this case P-max(c(P1,P2)) Regards Petr anna_l wrote: Hello, I am getting an error

Re: [R] Normalization of Data

2009-11-15 Thread Abhishek Pratap
Hey Sorry if it was not very clear, I assumed few things. Normalization is actually subjective, I am basically comparing data from two similar experiments and would like to normalize for the systematic errors which might affect the actual result and inference. What I am looking for is some

[R] ARMAX model fitting with arima

2009-11-15 Thread Rafael Laboissiere
I am trying to understand how to fit an ARMAX model with the arima function from the stats package. I tried the simple data below, where the time series (vector x) is generated by filtering a step function (vector u, the exogenous signal) through a lowpass filter with AR coefficient equal to 0.8.