[R] factors and ops

2006-05-26 Thread Erin Hodgess
Dear R People I have a variable which is an ID number that is a factor. I would like to look for ID numberbs that are greeater than a particular value. However, factors are a big ugly for these operations. I was messing with the HR data set from the SASmixed package. HR$Patient is a factor

Re: [R] factors and ops

2006-05-26 Thread Petr Pikal
Hi On 26 May 2006 at 1:33, Erin Hodgess wrote: Date sent: Fri, 26 May 2006 01:33:34 -0500 From: Erin Hodgess [EMAIL PROTECTED] To: r-help@stat.math.ethz.ch Subject:[R] factors and ops Dear R People I have a variable which

Re: [R] factors and ops

2006-05-26 Thread Gabor Grothendieck
Try an ordered factor: subset(HR, ordered(Patient) 214) or HR$Patient - ordered(HR$Patient) subset(HR, Patient 214) You might also check that it orders them in the way you want. ordered(HR$Patient) in the first case or just HR$Patient in the second case will display the data followed

Re: [R] factors

2006-05-12 Thread Prof Brian Ripley
On Thu, 11 May 2006, Arnab mukherji wrote: Hi R-users, I had a minor issue while demonstating R that I can't explain. I am hoping someone will have suggestions. The only difference is a call to fix() in between that I made to ensure people were following me. However, that seems to have

[R] factors

2006-05-11 Thread Arnab mukherji
Hi R-users, I had a minor issue while demonstating R that I can't explain. I am hoping someone will have suggestions. The only difference is a call to fix() in between that I made to ensure people were following me. However, that seems to have altered the way R code got executed. I was

[R] factors and mca

2006-05-02 Thread Carlos Mauricio Cardeal Mendes
Hi ! Wonder if I have this code below: a - c(1, 2, 3, 2, 1) b - c(3, 2, 3, 1, 1) d -as.factor(a) e -as.factor(b) table(d,e) is.factor(a) is.factor(b) is.factor(d) is.factor(e) de - factor(c(d,e)) is.factor(de) require(MASS) mca(de) I'd like to perform a correspondence analysis, but I can't

Re: [R] factors and mca

2006-05-02 Thread Peter Alspach
Mauricio Cardeal Mendes Sent: Wednesday, 3 May 2006 8:23 a.m. To: 'R-Help help' Subject: [R] factors and mca Hi ! Wonder if I have this code below: a - c(1, 2, 3, 2, 1) b - c(3, 2, 3, 1, 1) d -as.factor(a) e -as.factor(b) table(d,e) is.factor(a) is.factor(b) is.factor(d) is.factor(e) de

[R] factors in multinom function (nnet)

2005-04-12 Thread Alexandre Brito
Dear All: I am interested in multinomial logit models (function multinon, library nnet) but I'm having troubles in choose whether to define the predictors as factors or not. I had posted earlier this example (thanks for the reply ronggui): worms- data.frame(year= rep(2000:2004,

RE: [R] factors in multinom function (nnet)

2005-04-12 Thread Bill.Venables
usefully refer. I believe it was on April 1. Bill Venables. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alexandre Brito Sent: Wednesday, 13 April 2005 8:20 AM To: r-help@stat.math.ethz.ch Subject: [R] factors in multinom function (nnet) Dear All: I am

Re: [R] Factors.

2004-07-07 Thread Uwe Ligges
[last week,] [EMAIL PROTECTED] wrote: Hello, I'm new with R. I need some help; I have a matrix of data to wich i want to apply the function dudi.acm to perform multiple correspondence analysis. However to use it all variables must be factors, so how can i turn each column of the matrix into a

[R] Factors.

2004-07-01 Thread assuncao . senra
Hello, I'm new with R. I need some help; I have a matrix of data to wich i want to apply the function dudi.acm to perform multiple correspondence analysis. However to use it all variables must be factors, so how can i turn each column of the matrix into a factor? I've tried as.factor. It