Split-plot RCBD experimental design — design_split

Generate a split-plot design under a randomized complete block design (RCBD) structure for Tarpuy.

Usage

design_split_rcbd(
  nfactors = 2,
  factors,
  type = "split-rcbd",
  rep = 3,
  zigzag = FALSE,
  nrows = NA,
  serie = 1000,
  seed = NULL,
  project = "inkaverse",
  qrcode = "{project}{plots}{factors}"
)

Arguments

nfactors: Number of factors in the experiment. For split-plot RCBD it must be 2.
factors: List with exactly two named factors. The first factor is the whole-plot factor and the second factor is the subplot factor.
type: Design type. Default is "split-rcbd".
rep: Number of replications or blocks.
zigzag: Field layout in vertical zigzag order. If TRUE, subplot row order is reversed in even whole-plot columns.
nrows: Experimental design dimension by rows. If NA, it is calculated automatically as rep * number_of_subplot_levels.
serie: Number used as base for plot numbering.
seed: Seed for reproducible randomization.
project: Barcode or QR code prefix.
qrcode: String used to concatenate QR code fields.

Value

A list with the fieldbook design and parameters.

Details

The first factor is interpreted as the whole-plot factor and the second factor as the subplot factor. Factor column names are preserved in the final fieldbook, while their experimental role is stored in parameters.