Summarizing objects of class TD — summary.TD • statgenSTA

summary method for class TD.

Usage

# S3 method for class 'TD'
summary(
  object,
  ...,
  trial = names(object),
  traits,
  groupBy = NULL,
  what = if (!is.null(groupBy)) {
     c("nObs", "mean", "sd")
 } else {
     c("nObs",
    "nMiss", "mean", "median", "min", "max", "firstQ", "thirdQ", "var")
 }
)

Arguments

object

An object of class TD.

...

Further arguments - currently not used.

trial

A character string specifying the trial to be summarized.

traits

A character vector specifying the traits to be summarized.

groupBy

A character string specifying a column in TD by which the summary should be grouped. If NULL, no grouping is done.

what

A character vector indicating which summary statistics should be computed. If what = "all", all available statistics are computed.
Possible options are:

nVals: The number of values, i.e. non-missing + missing values.
nObs: The number of non-missing observations.
nMiss: The number of missing values.
mean: The mean.
median: The median.
min: The minimum.
max: The maximum.
range: The range (maximum - minimum).
firstQ: The first (25pct) quantile.
thirdQ: The third (75pct) quantile.
sd: The standard deviation.
seMean: The standard error of mean.
var: The variance.
seVar: The standard error of variance.
CV: The coefficient of variation.
sum: The sum.
sumSq: The sum of squares.
uncorSumSq: The uncorrected sum of squares.
skew: The skewness.
seSkew: The standard error of the skewness.
kurt: The kurtosis.
seKurt: The standard error of the kurtosis.
all: All summary statistics.

Value

A table containing the selected summary statistics.

Examples

## Summarize TDHeat05.
summary(TDHeat05,
        traits = "yield")
#> 
#> Summary statistics for yield in HEAT05  
#> 
#>                             yield
#> Number of observations      338.0
#> Number of missing values      0.0
#> Mean                       184.16
#> Median                     179.81
#> Min                         54.58
#> Max                        341.77
#> First quantile             148.56
#> Third quantile             220.50
#> Variance                 2569.229
#> 

## Summarize TDHeat05 grouping by repId.
summary(TDHeat05,
        traits = "yield",
        groupBy = "repId")
#> 
#> Summary statistics for yield in HEAT05 grouped by repId 
#> 
#>                             1      2
#> Number of observations  169.0  169.0
#> Mean                   208.98 159.34
#> Standard deviation     45.674 42.756
#>

Summarizing objects of class `TD`

Usage

Arguments

Value

See also

Examples