"nana" is meant to express "NA, really NA". Your suggestion sounds good.
On Thu 2 Jan, 2020, 3:38 AM Pages, Herve, <hpa...@fredhutch.org> wrote: > Happy New Year everybody! > > The name (is.nana) doesn't make much sense to me. Can you explain it? > > One alternative would be to add an extra argument (e.g. 'strict') to > is.na(). FALSE by default, and ignored (with or w/o a warning) when the > type of 'x' is not "numeric". > > H. > > > On 12/31/19 22:16, Jan Gorecki wrote: > > Hello R-devel, > > > > Best wishes in the new year. I am writing to kindly request new R > > function so NA_real_ can be more easily detected. > > Currently if one wants to test for NA_real_ (but not NaN) then extra > > work has to be done: `is.na(x) & !is.nan(x)` > > Required functionality is already at C level so to address my request > > there is not that much to do. > > Kevin Ushey made a nice summary of current R C api in: > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__stackoverflow.com_a_26262984_2490497&d=DwICAg&c=eRAMFD45gAfqt84VtBcfhQ&r=BK7q3XeAvimeWdGbWY_wJYbW0WYiZvSXAJJKaaPhzWA&m=oWT1wDiy7pogVlJHGtdOoM3zdB45t9zZVyGYU8qcOgo&s=zFj3lh-N_YlNBRlDKeO-aTs0Bf2qtWLUHKlw_nh2Q4o&e= > > Pasting related part below, extra row added by me is a requested feature. > > > > +---------------------+ > > | C fun | NaN | NA | R fun > > +---------------------+ > > | ISNAN | t | t | is.na > > | R_IsNaN | t | f | is.nan > > | ISNA | f | t | is.na && !is.nan > > | R_IsNA | f | t | is.na && !is.nan > > +---------------------+ > > +---------------------+ > > | R fun | NaN | NA | C fun > > +---------------------+ > > | is.na | t | t | ISNAN > > | is.nan | t | f | R_IsNaN > > +---------------------+ > > | is.nana | f | t | R_IsNA > > +---------------------+ > > > > Strictly speaking, I am asking for a new R function: > > > > is.nana <- function(x) if (typeof(x)=="numeric") > > .Primitive("is.nana") else .Primitive("is.na") > > > > Then probably a copy of C function `do_isnan` as `do_isnana` with a > > minor change from `R_IsNaN` to `R_IsNA`. > > > > Best, > > Jan Gorecki > > > > ______________________________________________ > > R-devel@r-project.org mailing list > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__stat.ethz.ch_mailman_listinfo_r-2Ddevel&d=DwICAg&c=eRAMFD45gAfqt84VtBcfhQ&r=BK7q3XeAvimeWdGbWY_wJYbW0WYiZvSXAJJKaaPhzWA&m=oWT1wDiy7pogVlJHGtdOoM3zdB45t9zZVyGYU8qcOgo&s=tCCxZtQj30QrtAYORMODT-OnjeKiXxiF0qlZtgyj1Mc&e= > > > > -- > Hervé Pagès > > Program in Computational Biology > Division of Public Health Sciences > Fred Hutchinson Cancer Research Center > 1100 Fairview Ave. N, M1-B514 > P.O. Box 19024 > Seattle, WA 98109-1024 > > E-mail: hpa...@fredhutch.org > Phone: (206) 667-5791 > Fax: (206) 667-1319 > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel