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#' @title read_excel
#'
#' @description Read `.xlsx` (Excel) file.
#'
#' @details Assumes that the first columns stores the row names and the first row the
#' column names.
#'
#' @param filename File name to read from.
#' @param sheet Name of sheet in Excel file.
#' @param dtype Numpy data type.
#'
#' @export
#'
#' @examples
#' \dontrun{
#' ad <- read_excel("spreadsheet.xls")
#' }
read_excel <- function(filename, sheet, dtype = "float32") {
python_anndata <- reticulate::import("anndata", convert = FALSE)
filename <- normalizePath(filename, mustWork = FALSE)
py_to_r_ifneedbe(python_anndata$read_excel(
filename = filename,
sheet = sheet,
dtype = dtype
))
}
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