On Nov 7, 2010, at 6:53 PM, bbslover wrote:
http://r.789695.n4.nabble.com/file/n3031344/RSV.Rdata RSV.Rdata
I want to split my dataset to training set and test set using
kennard-stone(KS) algorithm, it is lucky there is R packages
soil.spec to
implement it.
but when I used it to my dataset, it does not work, who can help me,
how
reasons is it, below, it is my code, and my data in the attachment.
No attachment, athough partial credit for making the effort. Most
probable cause... failing to read Posting Guide.
--
David.
ks<-ken.sto(x,per="TRUE",per.n=0.3,va="FALSE",sav="FALSE")
ks
% results
$`Chosen sample names`
NULL
$`Chosen row number`
integer(0)
$`Chosen calibration sample names`
[1] "NULL"
$`Chosen calibration row number`
[1] "NULL"
$`Chosen validation sample names`
[1] "NULL"
$`Chosen validation row number`
[1] "NULL"
attr(,"class")
why it is all NULL ?
and
ks<-ken.sto(x,per="TRUE",per.n=0.3,va="TRUE",sav="FALSE")
Error in val.min[i] <- blub[sample(length(blub), 1)] :
replacement has length zero
In addition: Warning message:
In min(prco[-cal.start.n, i]) :
no non-missing arguments to min; returning Inf
if I set va="TRUE", appearing the errors.
David Winsemius, MD
West Hartford, CT
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