strip_plot {FielDHub}

Strip Plot Design

Description

It randomly generates a strip plot design across locations.

Usage

strip_plot(
  Hplots = NULL,
  Vplots = NULL,
  b = 1,
  l = 1,
  plotNumber = NULL,
  planter = "serpentine",
  locationNames = NULL,
  seed = NULL,
  factorLabels = TRUE,
  data = NULL
)

Arguments

Hplots

Number of horizontal factors, as an integer or a vector.

Vplots

Number of vertical factors, as an integer or a vector.

b

Number of blocks (full replicates).

l

Number of locations. By default l = 1.

plotNumber

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

planter

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

locationNames

(optional) Names for each location.

seed

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

factorLabels

(optional) If TRUE retain the levels labels from the original data set otherwise, numeric labels will be assigned. Default is factorLabels =TRUE.

data

(optional) data frame with the labels of vertical and hirizontal plots.

Value

A list with four elements.

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

• stripsBlockLoc is a list with the strip blocks for each location.

• plotLayouts is a list with the layout plot numbers for each location.

• fieldBook is a data frame with the strip plot field book.

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 strip plot design with 5 vertical strips and 4 horizontal strips,
# with 3 reps in one location.
H <- paste("H", 1:4, sep = "")
V <- paste("V", 1:5, sep = "")
strip1 <- strip_plot(Hplots = H, 
                     Vplots = V, 
                     b = 3, 
                     l = 1, 
                     plotNumber = 101,
                     planter = "serpentine",
                     locationNames = "A", 
                     seed = 333)
strip1$infoDesign                  
strip1$stripsBlockLoc
strip1$plotLayouts
head(strip1$fieldBook,12)                     

# Example 2: Generates a strip plot design with 5 vertical strips and 5 horizontal strips,
# with 6 reps across to 3 locations. In this case, we show how to use the option data.
Hplots <- LETTERS[1:5]
Vplots <- LETTERS[1:4]
strip_data <- data.frame(list(HPLOTS = Hplots, VPLOTS = c(Vplots, NA)))
head(strip_data)
strip2 <- strip_plot(Hplots = 5, 
                     Vplots = 5, 
                     b = 6, 
                     l = 3, 
                     plotNumber = c(101,1001,2001),
                     planter = "cartesian",
                     locationNames = c("A", "B", "C"), 
                     seed = 222,
                     data = strip_data)
strip2$infoDesign                  
strip2$stripsBlockLoc
strip2$plotLayouts
head(strip2$fieldBook,12)