Dear list,
I have a problem with freq from prettyR.
Please have a look at my syntax with a litte example:
library(prettyR)
#Version 1
test.df<-data.frame(q1=sample(1:4,8,TRUE),
gender=sample(c("f","m"),8,TRUE))
test.df
freq(test.df) #No error message
#Version 2
test.df<-data.frame(gender=sample(c("f","m"),8,TRUE),
q1=sample(1:4,8,TRUE))
test.df
freq(test.df)
Error message: "Error in vector("integer", length) : Vector size
can?t be NA"
Can someone tell me, why an error message occurs in version two? I am
helpless...
Thanks in advance!
Udo K ? n i g
--------------------------------------------
Clinic for Child an Adolescent Psychiatry
Philipps University of Marburg / Germany
ukoenig at med.uni-marburg.de
2008-Jun-13 13:32 UTC
[R] Problem with Freq function {prettyR}
Does someone have an idea? Thanks a lot! Udo Quoting Udo <ukoenig at med.uni-marburg.de>:> Dear list, > I have a problem with freq from prettyR. > > Please have a look at my syntax with a litte example: > > > library(prettyR) > > #Version 1 > test.df<-data.frame(q1=sample(1:4,8,TRUE), gender=sample(c("f","m"),8,TRUE)) > test.df > freq(test.df) #No error message > > #Version 2 > test.df<-data.frame(gender=sample(c("f","m"),8,TRUE), q1=sample(1:4,8,TRUE)) > test.df > freq(test.df) > > Error message: "Error in vector("integer", length) : Vector size can?t be NA" > > Can someone tell me, why an error message occurs in version two? I am > helpless... > > Thanks in advance! > > Udo K ? n i g > > -------------------------------------------- > > Clinic for Child an Adolescent Psychiatry > Philipps University of Marburg / Germany >
Since this is a contributed package, you should be contacting the
maintainer (as mentioned in the posting guide).
Anyway, the problem occurs because in the second case you have a factor
in the first column and numeric in the second. This part of the code
will illustrate what I mean:
for (i in 1:nfreq) {
if (display.na)
nna <- sum(is.na(x[[i]]))
else nna <- 0
xt <- na.omit(x[[i]])
if (is.null(levels))
levels <- unique(xt)
if (is.numeric(x[[i]]))
xt <- factor(xt, levels = levels)
So the first time through this loop the levels variable is set to
c("m","f"). On the second time levels is no longer NULL, so
when the xt
variable is created it is essentially this:
xt <- factor(xt, levels = c("m","f"))
and since xt contains only numbers you get
[1] <NA> <NA> <NA> <NA> <NA> <NA> <NA>
<NA>
Levels: m f
Best,
Jim
ukoenig at med.uni-marburg.de wrote:> Does someone have an idea?
> Thanks a lot!
>
> Udo
>
>
> Quoting Udo <ukoenig at med.uni-marburg.de>:
>
>> Dear list,
>> I have a problem with freq from prettyR.
>>
>> Please have a look at my syntax with a litte example:
>>
>>
>> library(prettyR)
>>
>> #Version 1
>> test.df<-data.frame(q1=sample(1:4,8,TRUE),
gender=sample(c("f","m"),8,TRUE))
>> test.df
>> freq(test.df) #No error message
>>
>> #Version 2
>>
test.df<-data.frame(gender=sample(c("f","m"),8,TRUE),
q1=sample(1:4,8,TRUE))
>> test.df
>> freq(test.df)
>>
>> Error message: "Error in vector("integer", length) :
Vector size can?t be NA"
>>
>> Can someone tell me, why an error message occurs in version two? I am
>> helpless...
>>
>> Thanks in advance!
>>
>> Udo K ? n i g
>>
>> --------------------------------------------
>>
>> Clinic for Child an Adolescent Psychiatry
>> Philipps University of Marburg / Germany
>>
>
> ______________________________________________
> R-help at 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 provide commented, minimal, self-contained, reproducible code.
--
James W. MacDonald, M.S.
Biostatistician
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109
734-647-5623
ukoenig at med.uni-marburg.de
2008-Jun-13 16:32 UTC
[R] Problem with Freq function {prettyR}
Thanks a lot, Jim!> Since this is a contributed package, you should be contacting the > maintainer (as mentioned in the posting guide).sorry....> > Anyway, the problem occurs because in the second case you have a factor > in the first column and numeric in the second. This part of the code > will illustrate what I mean: > > for (i in 1:nfreq) { > if (display.na) > nna <- sum(is.na(x[[i]])) > else nna <- 0 > xt <- na.omit(x[[i]]) > if (is.null(levels)) > levels <- unique(xt) > if (is.numeric(x[[i]])) > xt <- factor(xt, levels = levels) > > So the first time through this loop the levels variable is set to > c("m","f"). On the second time levels is no longer NULL, so when the xt > variable is created it is essentially this: > > xt <- factor(xt, levels = c("m","f")) > > and since xt contains only numbers you get > > [1] <NA> <NA> <NA> <NA> <NA> <NA> <NA> <NA> > Levels: m f > > Best, > > Jim > > > > ukoenig at med.uni-marburg.de wrote: > > Does someone have an idea? > > Thanks a lot! > > > > Udo > > > > > > Quoting Udo <ukoenig at med.uni-marburg.de>: > > > >> Dear list, > >> I have a problem with freq from prettyR. > >> > >> Please have a look at my syntax with a litte example: > >> > >> > >> library(prettyR) > >> > >> #Version 1 > >> test.df<-data.frame(q1=sample(1:4,8,TRUE), > gender=sample(c("f","m"),8,TRUE)) > >> test.df > >> freq(test.df) #No error message > >> > >> #Version 2 > >> test.df<-data.frame(gender=sample(c("f","m"),8,TRUE), > q1=sample(1:4,8,TRUE)) > >> test.df > >> freq(test.df) > >> > >> Error message: "Error in vector("integer", length) : Vector size can?t be > NA" > >> > >> Can someone tell me, why an error message occurs in version two? I am > >> helpless... > >> > >> Thanks in advance! > >> > >> Udo K ? n i g > >> > >> -------------------------------------------- > >> > >> Clinic for Child an Adolescent Psychiatry > >> Philipps University of Marburg / Germany > >> > > > > ______________________________________________ > > R-help at 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 provide commented, minimal, self-contained, reproducible code. > > -- > James W. MacDonald, M.S. > Biostatistician > Affymetrix and cDNA Microarray Core > University of Michigan Cancer Center > 1500 E. Medical Center Drive > 7410 CCGC > Ann Arbor MI 48109 > 734-647-5623 >