Dear list,
I am using the lrm function from the rms package to estimate a logistic
model with weights. The c-statistic (or area under the curve) is part of
the lrm output.
To understand how the weights enter the computation of the c-statistics, I
looked at the script of lrm and lrm.fit but I am o
HI,I am analyzing a risk model for type 2 diabetes using a logistic regression.
In the final model I have only 6 predictors. The regression gives correct
output (fullmod is the fitted model). Now I try to do cross validation using
cv.binary. Any help in resolving this problem will be appreciate
On Wed, 15 Jun 2016 at 18:51 Rolf Turner wrote:
> On 15/06/16 20:18, Jim Lemon wrote:
> > Hi Alice,
> > Have you tried creating a vector of the start position (xpos[1],ypos[1]):
> >
> > xstart<-rep(xpos[1],n)
> > ystart<-rep(ypos[1],n)
> > # where "n" is the number of subsequent positions in the
Dear all;
Unfortunately I did not get any response for my following questions. It is
time sensitive job. I would be greatly appreciate if you give help soon.
Regards,
Greg
I am sorry for this posting. I have got help from Jim, Bert, Jeff and PIKAL
on similar issue before. I tried to modify
> On Jun 15, 2016, at 2:08 PM, Muhuri, Pradip (AHRQ/CFACT)
> wrote:
>
> Hello,
>
> I am using the dplyr's arrange() function to sort one of the many data
> frames on a character variable (named "prevalence").
>
> Issue: I am not getting the desired output (line 7 is the problem, which
>
Hi Pradip,
I'll assume that you are reading the data from a file:
pm.df<-read.csv("pmdat.txt",stringsAsFactors=FALSE)
# create a vector of numeric values of prevalence
numprev<-as.numeric(sapply(strsplit(trimws(pm.df$prevalence)," "),"[",1))
# order the data frame by that vector
pm.df[order(numpre
Hi farzana,
Probably the first thing is to ascertain what the class of "farzana" might be:
class(farzana)
Because "write.csv" expects "the object to be written, preferably a
matrix or data frame. If not, it is attempted to coerce x to a data
frame." to be the first argument. It seems that "farzan
On 6/15/2016 2:08 PM, Muhuri, Pradip (AHRQ/CFACT) wrote:
Hello,
I am using the dplyr's arrange() function to sort one of the many data frames on a
character variable (named "prevalence").
Issue: I am not getting the desired output (line 7 is the problem, which
should be the very last line
HI,I am analyzing a risk model for type 2 diabetes using a logistic regression.
In the final model I have only 6 predictors. The regression gives correct
output (fullmod is the fitted model). Now I have a subset of dataset (mydata1)
with 7 variables (1 response(0/1) + 6 predictors) and try to do
Hello,
I am using the dplyr's arrange() function to sort one of the many data frames
on a character variable (named "prevalence").
Issue: I am not getting the desired output (line 7 is the problem, which
should be the very last line in the sorted data frame) because the sorted field
is cha
Hi
Have you tried to load and run the fortran code using just a wrapper function
in R? I do that as the first step in order to build a package.
Example: fortran sources -> rk4_mod_r.f90 ,derive_henonheilles.f90,
poincare_section.f90
a) I use R CMD SHLIB rk4_mod_r.f90 ,derive_henonheilles
>With the call to gc(), the garbage collector will be called some time in
the
>future and the finalizers will be run then.
Typo: that initial 'With' should be 'Without'.
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Wed, Jun 15, 2016 at 12:57 PM, William Dunlap wrote:
> >>rm(curl) # rel
Fantastic! That did the trick. I still suspect that there may be a command
within RCurl that accomplishes the same thing, but in any case I’m very
grateful to have a solution that works.
Best,
John
From: William Dunlap
Date: Wednesday, June 15, 2016 at 12:57 PM
To: J Payne
Cc: T
Hi,
I'm trying to write an R package that calls a Fortran subroutine on my Mac
os x El Capitan with Xcode 7 and gfortran 6.1, R 3.3.0. I can build and
load the library but when I try to use it in R I get this error:
>library(NEpidemic)
>random_epi(variable_names)
Error in .Fortran("random_epi"
>>rm(curl) # release the curl! (does this end the session???)
Try adding a call to gc() immediately after this removal. That will force
an
immediate run of any finalizer associated with the object just removed.
With the call to gc(), the garbage collector will be called some time in the
futur
in the name of God
hi dear
I use benchmark package to use of dea and when I wanna save my result
as csv by this as below
write.csv(farzana,'D:sajjaad.csv')
I can not and the error is as below
Error in as.data.frame.default(x[[i]], optional = TRUE, stringsAsFactors =
stringsAsFactors) :
c
Thanks Tom! I tried that and it didn’t work, but perhaps there are other
problems. The system administrator wrote “I think closing sessions immediately
upon completion of the transfer,
or continuing to use the same session for additional requests would both have a
similar and positive effect.”
On 06/15/2016 09:05 PM, peter dalgaard wrote:
>
>> On 15 Jun 2016, at 19:37 , Nick Tulli wrote:
>>
>> Hey R-Help,
>>
>> I've got a three dimensional array which I pulled from a netcdf file.
>> The data in array are the humidity values of locations in the United
>> States over a time period. The
> On 15 Jun 2016, at 19:37 , Nick Tulli wrote:
>
> Hey R-Help,
>
> I've got a three dimensional array which I pulled from a netcdf file.
> The data in array are the humidity values of locations in the United
> States over a time period. The three dimensions are [longitude,
> latitude, days], 14
Hey R-Help,
I've got a three dimensional array which I pulled from a netcdf file.
The data in array are the humidity values of locations in the United
States over a time period. The three dimensions are [longitude,
latitude, days], 141x81x92. My goal is to find the mean value at each
longitude/lat
Hello,
thank you for the answer. it's true i was'nt clear enough.
the problem with glm()/gam or coxph() when the spline terms are used
(specialy spline of 3rd degree) the calculated coefficients for the spline
terms are difficult to interpret. for example for spline of degree=3 and 3
knots, there a
> On Jun 15, 2016, at 9:12 AM, takiy berrandou wrote:
>
> Hello,
> thank you for the answer. it's true i was'nt clear enough.
> the problem with glm()/gam or coxph() when the spline terms are used
> (specialy spline of 3rd degree) the calculated coefficients for the spline
> terms are difficu
After converting the table to a data frame, replicate each row by the number of
observations:
> ddd.df <- as.data.frame(ddd) # as.data.frame.table does the same thing
> ddd.new <- as.matrix(ddd.df[rep(seq_along(ddd.df[, 1]), ddd.df$Freq), 1:2])
> head(ddd.new)
a b
1 "a" "A"
1.1 "a" "A"
> On Jun 15, 2016, at 11:10 AM, Patrizio Frederic
> wrote:
>
> Dear R-users,
> I've a problem that puzzle me
>
> suppose I have a two way contigency table
>
> a <- sample(al <- letters[1:10],100,T)
> b <- sample(bl <- LETTERS[1:5],100,T)
> ab <- cbind(a,b)
>
> ddd <- (xtabs(data = ab))
> dd
Em Qua 15 jun. 2016, às 13:10, Patrizio Frederic escreveu:
> Dear R-users,
> I've a problem that puzzle me
>
> suppose I have a two way contigency table
>
> a <- sample(al <- letters[1:10],100,T)
> b <- sample(bl <- LETTERS[1:5],100,T)
> ab <- cbind(a,b)
>
> ddd <- (xtabs(data = ab))
> ddd <- a
Hi Patrizio,
maybe there is a more efficient way, but you can loop over rows and columns
like this
ab.recon <- data.frame()
ddd.rownames <- rownames(ddd)
ddd.colnames <- colnames(ddd)
for(cur.row in ddd.rownames){
for(cur.col in ddd.colnames){
times.found <- ddd[cur.row, cur.col]
tmp.
Dear R-users,
I've a problem that puzzle me
suppose I have a two way contigency table
a <- sample(al <- letters[1:10],100,T)
b <- sample(bl <- LETTERS[1:5],100,T)
ab <- cbind(a,b)
ddd <- (xtabs(data = ab))
ddd <- as.matrix(ddd)
the question is: how do I reverse the code, thus how do I get raw
Em Ter 14 jun. 2016, às 11:43, takiy berrandou escreveu:
> Hello,
>
> I'm looking for a package or function, which calculate OR/HR from spline
> model regression. for example in SAS it exist some MACRO helping to do
> that
> easiely.
>
> i had make some research on the forum here and on the web b
> On Jun 14, 2016, at 7:43 AM, takiy berrandou wrote:
>
> Hello,
>
> I'm looking for a package or function, which calculate OR/HR from spline
> model regression. for example in SAS it exist some MACRO helping to do that
> easiely.
>
> i had make some research on the forum here and on the web b
dear all;
I am sorry for this posting. I have got help from Jim, Bert, Jeff and PIKAL
on similar issue before. I tried to modify Jim`s code to the real data but
it did not work. Now I am posting first two rows the imitation of real data
using dput() format (please see at the bottom). I have two
I have never used that package, but the error message seems clear. You need to
use the correct arguments to the setup_twitter_oauth function, and that
requires that you interact with twitter parsonally to obtain appropriate
credentials. While someone here may be able to give you a pointer as to
Hi all,
I have a df and I want to use supervised Self Organizing Map to do
classification. I should use Kohonen library and xyf function from it. As you
know the xyf function looks like this and I have problem defining my Y:
xyf(data,Y,grid=somgrid(),rlen=100,alpha=c(0.05,0.01))
I want to do
On 15/06/2016 1:22 AM, 李兰婷 wrote:
Dear Team,
A problem occured when I run Rstudio. Could you please give me some
advice?there is a lot of messy code when I read a csv file, which includes
several columns in chinese, and R code run on WIN 10 system. I tried all the
methods I can find on the
Dear Team,
A problem occured when I run Rstudio. Could you please give me some
advice?there is a lot of messy code when I read a csv file, which includes
several columns in chinese, and R code run on WIN 10 system. I tried all the
methods I can find on the internet, but no one is worked. is t
On 15 Jun 2016, at 11:04 , PIKAL Petr wrote:
> Hi
>
> not completely sure but is there a variable with name "fonts" in some of your
> data frames?
That doesn't usually give a warning, unless an option is set, and even then,
it's not quite the same message:
> options(warnPartialMatchDollar=
Hi
not completely sure but is there a variable with name "fonts" in some of your
data frames?
Regards
Petr
> -Original Message-
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of
> g.maub...@weinwolf.de
> Sent: Tuesday, June 14, 2016 4:12 PM
> To: r-help@r-project.org
> S
Hi Elahe
I get slightly different error when using scale to nonnumeric data so I am not
sure if you use the scale function from base package.
> scale(raman[1:20,])
Error in colMeans(x, na.rm = TRUE) : 'x' must be numeric
Anyway, how do you expect scaling shall be done when you have nonumeric
v
On 15/06/16 20:18, Jim Lemon wrote:
Hi Alice,
Have you tried creating a vector of the start position (xpos[1],ypos[1]):
xstart<-rep(xpos[1],n)
ystart<-rep(ypos[1],n)
# where "n" is the number of subsequent positions in the trip
max(trackDistance(xstart,ystart,xpos[2:n],ypos[2:n],...))
may then
Hi Alice,
Have you tried creating a vector of the start position (xpos[1],ypos[1]):
xstart<-rep(xpos[1],n)
ystart<-rep(ypos[1],n)
# where "n" is the number of subsequent positions in the trip
max(trackDistance(xstart,ystart,xpos[2:n],ypos[2:n],...))
may then give you the value of the longest dist
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