Re: [R] cut2 error

[David Winsemius]

On Oct 17, 2012, at 12:42 PM, Charles Determan Jr wrote:
To R users,

I am trying to use cut2 function from the 'Hmisc' library.  However,  
when I
try and run the function on the following variable, I get an error  
message
(displayed below).  I suspect it is because of the NA but I have no  
idea
how to address the error.  Many thanks to any insights.

structure(list(var1 = c(97, 97, 98, 98, 97, 99, 97,
98, 99, 98, 99, 98, 98, 97, 97, 98, 99, 98, 96, 98, 98, 99, 98,
98, 99, 99, 98, 99, 98, 99, 99, 99, 99, 98, 99, 96, 99, 98, 98,
99, 97, 98, 99, 99, 97, 99, 99, 98, 98, 98, 99, NA, 99, 98, 98,
98, 98, 98, 98, 98, 99, 99, 98, 99, 99, 98, 98, 99, 99, 97, 98,
98, 98, 99, 98, 98, 98, 99, 98, 98)), .Names = "var1", row.names =  
c(NA,
80L), class = "data.frame")

cut2(dat[,1], g=4)

Warning message:
In min(xx[xx > upper]) : no non-missing arguments to min; returning  
Inf


It's not n error message. You got a factor result. Only a warning.  
What did you expect when you asked for quartiles in a sample that was  
distributed as:

> table(dat[1])

96 97 98 99
 2  9 39 29

> quantile(dat[1], prob=(1:3)/4, na.rm=TRUE)
25% 50% 75%
 98  98  99

--
David Winsemius, MD
Alameda, CA, USA

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