[R-pkg-devel] R package NOTE: \item in \describe must have non-empty label

[Walter, Vonn]

Hi Everyone,

The /data directory of my R package includes three objects, each of which has its own documentation in the /R and /man directories.  Running R CMD check -as-cran produces the NOTE "\item in \describe must have non-empty label." I get this NOTE for each of these three objects.  The first two objects are numeric matrices (luadSubset and luscSubset).  The documentation for each matrix includes a \describe field (see below for luadSubset... luscSubset is essentially the same), but I do not have an \item inside \describe because the object is not a data frame.  This *seems* correct because distinct columns correspond to data from different subjects, not different variables.  However, I could be wrong.  Here's some of the documentation from luadSubset.R:

#' @format A numeric matrix of quantitative DNA copy number values with 3475 rows and 65 columns.
#'   \describe{
#'                            Rows are indexed by genes, and columns are indexed by samples.  The entries are on the log
#'            ratio scale and were produced by the GISTIC pipeline.
#'                            }
#'
#' @source \url{https://gdac.broadinstitute.org/}

The third object is a list (pD), and inside the \describe field I have \item fields for list item, as shown below.  Here's some of the documentation from pD.R:

#' @format A list containing three components for a common set of genes:
#' \describe{
#'   \item{X}{DNA copy number data for lung adenocarcinoma}
#'   \item{Y}{DNA copy number data for lung squamous cell carcinoma}
#'   \item{posDT}{Gene position data}
#' }

Any help would be greatly appreciated.

Best,

Vonn


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