RCBD {FielDHub}

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
)

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.

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.

Author(s)

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)