Convert numeric to factor

From: Haibo Huang <edhuang00 at yahoo.com>
To: r-help at r-project.org
Subject: [R] Convert numeric to factor
Date: Wed, 3 Aug 2005 13:52:13 -0700 (PDT)

Hi,

I tried to do a logistic regression with polr(MASS). I
thought I already converted the response to factor,
but obvious I was wrong. Could anyone tell me what I
did wrong and how to correct it? Thank you very much!

Lease=read.csv("LeaseDummy.csv", header=TRUE)
Lease$ID <-

as.integer(factor(Lease$EarlyTermination))

RegA=polr(ID~1+MSA+SIC.Code+TenantOption+LLOption+TOExercised,

+  data=Lease, method=c("logistic"))
Error in polr(ID ~ 1 + MSA + SIC.Code + TenantOption +
LLOption + TOExercised,  :
        response must be a factor

summary(RegA)

Best,
Ed.




--- Jean Eid <jeaneid at chass.utoronto.ca> wrote:

if labda is the elements of the vector and you know
what kexp is , you can
use apply

apply(your_vector, 1, function(x) 1-
exp^(kexp^(-x)))


HTH

Jean
On Wed, 3 Aug 2005, Rangesh Kunnavakkam wrote:

I  have a large vector of around 12597 elements

and I wish to calculate

p-value for each element using a formula of

something like:

                        p-value= 1-

exp^(kexp^(-labda))

I was wondering someone could give some ideas how

to implement for each element.

thankyou very much
Rangesh.K