Genotype-environment winners

Computes the ranking for genotypes within environments and return the winners.

Usage

ge_winners(.data, env, gen, resp, type = "winners", better = NULL)

Arguments

.data

The dataset containing the columns related to Environments, Genotypes, and the response variable(s).

env

The name of the column that contains the levels of the environments.

gen

The name of the column that contains the levels of the genotypes.

resp

The response variable(s). To analyze multiple variables in a single procedure a vector of variables may be used. For example resp = c(var1, var2, var3). Select helpers are also allowed.

type

The type of results. Defaults to "winners" (default), i.e., a two-way table with the winner genotype in each environment. If type = "ranks" return the genotype ranking within each environment.

better

A vector of the same length of the number of variables to rank the genotypes according to the response variable. Each element of the vector must be one of the 'h' or 'l'. If 'h' is used (default), the genotypes are ranked from maximum to minimum. If 'l' is used then the are ranked from minimum to maximum. Use a comma-separated vector of names. For example, better = c("h, h, h, h, l"), for ranking the fifth variable from minimum to maximum.

Value

A tibble with two-way table with the winner genotype in each environment (default) or the genotype ranking for each environment (if type = "ranks").

Author

Tiago Olivoto tiagoolivoto@gmail.com

Examples

# \donttest{
library(metan)
ge_winners(data_ge, ENV, GEN, resp = everything())
#> # A tibble: 14 × 3
#>    ENV   GY    HM   
#>    <fct> <chr> <chr>
#>  1 E1    G2    G5   
#>  2 E10   G8    G5   
#>  3 E11   G8    G6   
#>  4 E12   G8    G6   
#>  5 E13   G8    G8   
#>  6 E14   G3    G7   
#>  7 E2    G3    G5   
#>  8 E3    G2    G10  
#>  9 E4    G10   G10  
#> 10 E5    G8    G10  
#> 11 E6    G3    G4   
#> 12 E7    G7    G8   
#> 13 E8    G8    G8   
#> 14 E9    G4    G10  

# Assuming that for 'GY' lower values are better.
ge_winners(data_ge, ENV, GEN,
           resp = everything(),
           better = c("l, h"))
#> # A tibble: 14 × 3
#>    ENV   GY    HM   
#>    <fct> <chr> <chr>
#>  1 E1    G10   G5   
#>  2 E10   G10   G5   
#>  3 E11   G10   G6   
#>  4 E12   G10   G6   
#>  5 E13   G10   G8   
#>  6 E14   G2    G7   
#>  7 E2    G7    G5   
#>  8 E3    G6    G10  
#>  9 E4    G7    G10  
#> 10 E5    G10   G10  
#> 11 E6    G6    G4   
#> 12 E7    G9    G8   
#> 13 E8    G2    G8   
#> 14 E9    G9    G10  

# Show the genotype ranking for each environment
ge_winners(data_ge, ENV, GEN,
           resp = everything(),
           type = "ranks")
#> # A tibble: 140 × 3
#>    ENV   GY    HM   
#>    <fct> <chr> <chr>
#>  1 E1    G2    G5   
#>  2 E1    G8    G4   
#>  3 E1    G3    G6   
#>  4 E1    G7    G8   
#>  5 E1    G4    G9   
#>  6 E1    G1    G7   
#>  7 E1    G9    G10  
#>  8 E1    G6    G1   
#>  9 E1    G5    G3   
#> 10 E1    G10   G2   
#> # ℹ 130 more rows
# }