> On Oct 17, 2016, at 1:54 PM, Maity, Arnab K <aku...@stat.tamu.edu> wrote:
>
> I try to run the following code:
>
> sis.fit <- SIS(y = Surv(time = y[, 1], event = y[, 2]), x = x, family =
> "cox", penalty = "lasso", tune = "cv",
> nfolds = 10, type.measure = "deviance", nsis = min(dim(x)),
> iter = FALSE, seed = 334)
>
> I get the following error:
>
> Error in names(coef.beta) = paste("X", ix1, sep = "") :
> 'names' attribute [1] must be the same length as the vector [0].
You supplied a matrix as an argument to 'x' but the error message is suggesting
to me that the code was written to expect a list (or dataframe). (On the other
hand I suppose you could have a matrix accessioned with a length-1 'i' or 'j'
argument that would return a "named"-vector.)
Reading the help page for SIS, one sees that x was supposed to be a "design
matrix, of dimensions n * p, without an intercept." I cannot determine whether
your 'x' argument qualifies as such. Others may be able to determine from the
circumstantial evidence whether that is possibly the case. Rhelp's posting
guide suggest that questions about unexpected behavior should be accompanied by
a discussion that include prior correspondence with the package maintainer as
well as data ojects from `dump` or `dput` that would allow replication of the
error.
The code to obtain the maintainer's email address :
maintainer('SIS')
--
David.
>
> here is some information about the data.
>
>> head(y)
> time status
> 1 24 1
> 2 31 0
> 3 39 0
> 4 64 1
> 5 72 1
> 6 6 0
>> str(y)
> num [1:46, 1:2] 24 31 39 64 72 6 87 17 53 54 ...
> - attr(*, "dimnames")=List of 2
> ..$ : chr [1:46] "1" "2" "3" "4" ...
> ..$ : chr [1:2] "time" "status"
>> str(x)
> num [1:46, 1:66] 0.59234 0.30042 0.28278 -0.00966 0.08189 ...
> - attr(*, "dimnames")=List of 2
> ..$ : chr [1:46] "1" "2" "3" "4" ...
> ..$ : chr [1:66] "EIF4EBP1" "TP53BP1" "AKT1.AKT2.AKT3" "AR" ...
>> sessionInfo()
> R version 3.3.1 (2016-06-21)
> Platform: x86_64-w64-mingw32/x64 (64-bit)
> Running under: Windows >= 8 x64 (build 9200)
>
> locale:
> [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United
> States.1252 LC_MONETARY=English_United States.1252
> [4] LC_NUMERIC=C LC_TIME=English_United States.1252
>
> attached base packages:
> [1] stats graphics grDevices utils datasets methods base
>
> other attached packages:
> [1] survival_2.39-4 SIS_0.8-3 glmnet_2.0-5 foreach_1.4.3
> Matrix_1.2-6
>
> loaded via a namespace (and not attached):
> [1] tools_3.3.1 splines_3.3.1 codetools_0.2-14 grid_3.3.1
> iterators_1.0.8 ncvreg_3.6-0 lattice_0.20-33
>>
>
> Please help!?
>
>
>
>
> Arnab Kumar Maity
> Department of Statistics
> Texas A&M University
> 3143 TAMU, Room 401A
> College Station, TX 77843
> aku...@stat.tamu.edu<mailto:arnabkrma...@stat.tamu.edu>
> +1 779 777 3428<tel:%2B1%20779%20777%203428>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA
______________________________________________
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