[Rd] oddity in transform
Note the inconsistency in the names in these two examples. X.Time in the first case and Time.1 in the second case. > transform(BOD, X = BOD[1:2] * seq(6)) Time demand X.Time X.demand 118.3 1 8.3 22 10.3 4 20.6 33 19.0 9 57.0 44 16.0 16 64.0 55 15.6 25 78.0 67 19.8 42118.8 > transform(BOD, X = BOD[1] * seq(6)) Time demand Time.1 118.3 1 22 10.3 4 33 19.0 9 44 16.0 16 55 15.6 25 67 19.8 42 -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Suggestion for updating `p.adjust` with new method (BKY 2006)
Dear R contributors,
I suggest adding a new method to `p.adjust` ("Adjust P-values for Multiple
Comparisons",
https://stat.ethz.ch/R-manual/R-devel/library/stats/html/p.adjust.html).
This new method is published in Benjamini, Krieger, Yekutieli 2016 Adaptive
linear step-up procedures that control the false discovery rate
(Biometrika). https://doi.org/10.1093/biomet/93.3.491
This paper described multiple methods for adjusting p-values, where the "TST"
method (Definition 6) performed the best when test statistics are
positively correlated, per my interpretation. This method can be labeled as
"BKY", for the three authors Benjamini, Krieger, Yekutieli.
I apologize if this is a duplication.
Best,
Claire
Xiaoqing Claire Rong-Mullins
Bioinformatic Specialist
Division of Biostatistics
College of Public Health
The Ohio State University
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[Rd] Is NULL a vector?
Hi all, Would you generally consider NULL to be a vector? Base R functions are a little inconsistent: ## In favour ``` r identical(as.vector(NULL), NULL) #> [1] TRUE identical(as(NULL, "vector"), NULL) #> [1] TRUE # supports key vector vector generics length(NULL) #> [1] 0 NULL[c(3, 4, 5)] #> NULL NULL[[1]] #> NULL ``` ## Against ``` r is.vector(NULL) #> [1] FALSE is(NULL, "vector") #> [1] FALSE ``` ## Abstentions ``` r is.atomic(NULL) #> [1] TRUE # documentation states "returns NULL if x is of an atomic type (or NULL)" # is "or" exclusive or inclusive? ``` Hadley -- http://hadley.nz __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Is NULL a vector?
On 23/07/2018 3:03 PM, Hadley Wickham wrote: Hi all, Would you generally consider NULL to be a vector? According to the language definition (in the doc directory), it is not: "Vectors can be thought of as contiguous cells containing data. Cells are accessed through indexing operations such as x[5]. More details are given in Indexing. R has six basic (‘atomic’) vector types: logical, integer, real, complex, string (or character) and raw. The modes and storage modes for the different vector types are listed in the following table." and later "There is a special object called NULL. It is used whenever there is a need to indicate or specify that an object is absent. It should not be confused with a vector or list of zero length." Duncan Murdoch Base R functions are a little inconsistent: ## In favour ``` r identical(as.vector(NULL), NULL) #> [1] TRUE identical(as(NULL, "vector"), NULL) #> [1] TRUE # supports key vector vector generics length(NULL) #> [1] 0 NULL[c(3, 4, 5)] #> NULL NULL[[1]] #> NULL ``` ## Against ``` r is.vector(NULL) #> [1] FALSE is(NULL, "vector") #> [1] FALSE ``` ## Abstentions ``` r is.atomic(NULL) #> [1] TRUE # documentation states "returns NULL if x is of an atomic type (or NULL)" # is "or" exclusive or inclusive? ``` Hadley __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Is NULL a vector?
On Mon, Jul 23, 2018 at 2:17 PM, Duncan Murdoch wrote: > On 23/07/2018 3:03 PM, Hadley Wickham wrote: >> >> Hi all, >> >> Would you generally consider NULL to be a vector? > > > According to the language definition (in the doc directory), it is not: > "Vectors can be thought of as contiguous cells containing data. Cells are > accessed through indexing operations such as x[5]. More details are given in > Indexing. > > R has six basic (‘atomic’) vector types: logical, integer, real, complex, > string (or character) and raw. The modes and storage modes for the different > vector types are listed in the following table." > > and later > > "There is a special object called NULL. It is used whenever there is a need > to indicate or specify that an object is absent. It should not be confused > with a vector or list of zero length." Perfect, thanks! Also available online at https://cran.r-project.org/doc/manuals/r-release/R-lang.html#Vector-objects Hadley -- http://hadley.nz __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
