FielDHub (version 1.4.2)

RCBD: Generates a Randomized Complete Block Design (RCBD)

Description

It randomly generates a randomized complete block design (RCBD) across locations.

Usage

RCBD(
  t = NULL,
  reps = NULL,
  l = 1,
  plotNumber = 101,
  continuous = FALSE,
  planter = "serpentine",
  seed = NULL,
  locationNames = NULL,
  data = NULL
)

Value

A list with five elements.

• infoDesign is a list with information on the design parameters.

• layoutRandom is the RCBD layout randomization for each location.

• plotNumber is the plot number layout for each location.

• fieldBook is a data frame with the RCBD field book design.

Arguments

t

An integer number with total number of treatments or a vector of dimension t with labels.

reps

Number of replicates (full blocks) of each treatment.

l

Number of locations. By default l = 1.

plotNumber

Numeric vector with the starting plot number for each location. By default plotNumber = 101.

continuous

Logical value for plot number continuous or not. By default continuous = FALSE.

planter

Option for serpentine or cartesian arrangement. By default planter = 'serpentine'.

seed

(optional) Real number that specifies the starting seed to obtain reproducible designs.

locationNames

(optional) Names for each location.

data

(optional) Data frame with the labels of treatments.

Author

Didier Murillo [aut], Salvador Gezan [aut], Ana Heilman [ctb], Thomas Walk [ctb], Johan Aparicio [ctb], Richard Horsley [ctb]

References

Federer, W. T. (1955). Experimental Design. Theory and Application. New York, USA. The Macmillan Company.

Examples

# Example 1: Generates a RCBD design with 3 blocks and 20 treatments across 3 locations.
rcbd1 <- RCBD(t = LETTERS[1:20], reps = 5, l = 3, 
              plotNumber = c(101,1001, 2001), 
              continuous = TRUE,
              planter = "serpentine", 
              seed = 1020, 
              locationNames = c("FARGO", "MINOT", "CASSELTON"))
rcbd1$infoDesign                  
rcbd1$layoutRandom
rcbd1$plotNumber
head(rcbd1$fieldBook)

# Example 2: Generates a RCBD design with 6 blocks and 18 treatments in one location.
# In this case, we show how to use the option data.
treatments <- paste("ND-", 1:18, sep = "")
treatment_list <- data.frame(list(TREATMENT = treatments))
head(treatment_list)
rcbd2 <- RCBD(reps = 6, l = 1, 
              plotNumber = 101, 
              continuous = FALSE, 
              planter = "serpentine", 
              seed = 13, 
              locationNames = "IBAGUE",
              data = treatment_list)
rcbd2$infoDesign                  
rcbd2$layoutRandom
rcbd2$plotNumber
head(rcbd2$fieldBook)