Displaying 20 results from an estimated 30000 matches similar to: ""object not found""
2007 Feb 20
0
R: Re: summary polr
Hi all,
The problem is that when you try to use the function summary of a polr object in a function, it does not work.
The problem is not related to the formula or the structure of data involved.
It is probably related to the use of the function "vcov" in the code of summary for polr, and the iterative procedure to estimate the Hessian.
Anyway, here there is an example extracted from
2007 Feb 19
3
summary polr
Hi all,
I have a problem to estimate Std. Error and t-value by ?polr? in library Mass.
They result from the summary of a polr object.
I can obtain them working in the R environment with the following statements:
temp <- polr(formula = formula1, data = data1)
coeff <- summary(temp),
but when the above statements are enclosed in a function, summary reports the following error:
2010 Sep 20
1
ERROR: Object not found
Dear All,
I am trying to use ode solver "rk4" to solve an ODE system, however, it
keeps saying: Error in eval(expr, envir, enclos) : object "dIN" not found.
The sample codes are enclosed as follows, please help me. Thank you very
much!
rm(list=ls())
library(odesolve)
# The ODE system
ode <- function(t,x,p){
with(as.list(c(x,p)),{
2010 Sep 20
1
Ask for help with Error: Object not found
Dear All,
I am trying to use ode solver "rk4" to solve an ODE system, however, it
keeps saying: Error in eval(expr, envir, enclos) : object "dIN" not found.
The sample codes are enclosed as follows, please help me. Thank you very
much!
rm(list=ls())
library(odesolve)
# The ODE system
ode <- function(t,x,p){
with(as.list(c(x,p)),{
2008 Aug 13
1
Arguments to lm() within a function - object not found
Hi all,
I'm having some difficulty passing arguments into lm() from within a
function, and I was hoping someone wiser in the ways of R could tell me
what I'm doing wrong. I have the following:
lmwrap <- function(...) {
wts <- somefunction()
print(wts) # This works, wts has the values I expect
fit <- lm(weights=wts,...)
return(fit)
}
If I call my function lmwrap, I get
2012 May 15
1
Error in eval(expr, envir, enclos) : object 'Rayos' not found???
Hi R-listers,
I am trying to make a trellis boxplot with the HSuccess (y-axis) in each
Rayos (beach sections) (x-axis), for each Aeventexhumed (A, B, C) - nesting
event. I am not able to do so and keep receiving:
Error in eval(expr, envir, enclos) : object 'Rayos' not found
Please advise,
Jean
require(plyr)
resp <- read.csv("ABC Arribada R File Dec 12 Jean
2011 Mar 23
2
) Error in eval(expr, envir, enclos) : object '' not found
> datafilename="E:/my documents/r/sex/bysex1.csv"
> data.sex=read.table(datafilename,header=T)
> data.sex
y.sex.age.region.c.n
1 1980,F,A,N,-18.15,13.61
2 1980,F,A,N,-18.61,13.04
3 1980,F,A,N,-18.81,12.32
4 1990,F,A,N,-21.12,11.7
5 1990,F,A,N,-20.77,11.58
6 1990,F,A,N,-21.6,13.34
7 1990,F,A,N,-21.78,12.6
> model.anova<-aov(c~age*sex,data=data.sex)
2007 Jun 01
1
object not found inside function
Hi!
When running the following code I get the message: Error in eval(expr,
envir, enclos) : object "A" not found
fm <- function(p,ydata, env = parent.frame()) {
#fit model y ~ (b0+b1x1+...+bpxp)*exp(g2plus*z2plus) where bi and g2plus
are parameters
#create design matrix for linear part
fo00 <-
2012 Jan 16
2
Object not found using GAMs in MGCV Package
This is my first time running GAMs in R.
My csv file has these column headings:
"X" "Y" "Sound" "Atlantic" "Blacktip" "Bonnet"
"Bull" "Finetooth" "Lemon" "Scalloped" "Sandbar" "Spinner"
"Abundance" "Diversity"
2006 Jul 19
1
Problem with ordered logistic regression using polr function.
Hi,
I'm trying to fit a ordered logistic regression. The response variable
(y) has three levels (0,1,2).
The command I've used is:
/ordlog<-polr(y~x1+x2+x3+x4, data=finalbase, subset=heard, weight=wt,
na.action=na.omit)
/
(There are no NA's in y but there are NA's in X's)
The error I'm getting is:
/Warning messages:
1: non-integer #successes in a binomial glm! in:
2007 Jun 05
1
Question using stepAIC
Hi - I use stepAIC to automatically select the model. The stepAIC was applied on polr as follow:objPolr <- polr(formula=myformula, data=dat, method=METHOD);objPolr.step <- stepAIC(objPolr, trace=T);Then R complaints that it doesn't know about 'dat' when it executes the second line. Below is the exact error that I got when executing the stepAIC line above:Error in eval(expr,
2002 May 02
1
how to trap any warnings from an R function -- again :(
With the incorporation of the useful hints, my user function now looks like
this:
userfn <- function() {
...
ow <- options("warn")
options(warn = 2);
...
reg<-try(polr(act~.,data=mm,Hess=TRUE))
...
sumreg<-try(summary(reg))
print(length(sumreg))
print(sumreg)
...
options(ow) # reset
}
The routine userfn() is called multiple times, two of which I happen to know
to
2010 Oct 16
1
Error in eval(expr, envir, enclos) : object 'x' not found
Dear all
I tried to use regression to predicted mu data, but it has error like this:
> IWJR.complete
x y
[1,] 33.17635 2.4705021
[2,] 81.61225 3.3815620
[3,] 65.47392 1.6518975
[4,] 57.97806 1.6110785
[5,] 76.05528 2.1601246
[6,] 41.36090 1.5498132
[7,] 68.77844 2.8078691
[8,] 55.57040 2.1183063
[9,] 41.29287 1.8015709
[10,] 65.43935 2.3483183
[11,] 22.44821
2009 Dec 06
2
Error in eval(expr, envir, enclos) : object 'N' not found
I'm running an LSODA to generate some graphs, but I need to stop at a certain
point and use those values to generate another LSODA output. This is
working fine, but when I try to run the second LSODA, I get the "Error in
eval(expr, envir, enclos) : object 'N' not found". Any ideas what can be
causing this? I have no object 'N' anywhere in the script. I made an
2008 Oct 14
1
library MICE warning message
Hello.
I have run the command
imp<-mice(mydata, im=c("","pmm","logreg","logreg"),m=5)
for a variable with no missing data, a numeric one and two variables with binary data.
I got the following message:
There were 37 warnings (use warnings() to see them)
> warnings()
Warning messages:
1: In any(predictorMatrix[j, ]) ... : coercing argument of
2004 Sep 30
1
expand.model.frame gives "object not found"
Hello,
I am a (relatively) experienced programmer, but new to R.
I have a problem using R 1.9.1. I have fit some data using glm(), from
within a function:
formula = as.formula(paste(depvarname, "~", rhs), env=globalenv())
return (glm(formula, family=binomial(link=logit)))
I have now come back to the formula and want to add some more
variables to it. So I do:
2006 Jul 19
0
Problem with ordered logistic regression using polr function
Hi,
I'm trying to fit a ordered logistic regression. The response variable
(y) has three levels (0,1,2).
The command I've used is:
ordlog<-polr(y~x1+x2+x3+x4, data=finalbase, subset=heard, weight=wt,
na.action=na.omit)
(There are no NA's in y but there are NA's in X's)
The error I'm getting is:
Warning messages:
1: non-integer #successes in a binomial glm! in:
2008 Mar 13
0
help with summary(polr_model)
hello everybody
I'm a newbie with ordered probit and with polr too.
The problem is that I have a dependent variable I need to explain
with an ordered probit that is
> head(dfscale$sod.sit.ec.fam,100)
> [1] 5 7 5 6 5 5 6 8 6 8 8 8 6 6 6 5 0 5 NA 6
> [21] 7 NA NA 0 0 2 5 3 6 6 7 6 NA 8 6 6 7 NA NA NA
> [41] 4 5 NA 10 3 9 10 10 7 5 5 5 NA
2002 Jun 04
2
machine dependency [polr()/optim()]
Dear R experts:
I am running some calculations using polr() in MASS library, and found some
differences in results obtained on two different machines (IRIX 6.5, and
Linux RH 7.1). It is not clear to me whether this is due to some error in
my programming the calculation and how to resolve the differences, if
possible.
The polr() call is the following:
2009 Nov 02
2
"object not found" within function
Hi,
I am trying to write a function to compute many cross-tabulations with the -svytable- command. Here is a simplified example of the structure of my code (adapted from the -svytable- help file):
data(api)
func.example<-function(variable){
dclus1<-svydesign(id=~1, weights=~pw,data=apiclus1, fpc=~fpc)
svytable(~ variable, dclus1)
}
When I call this function with: