as.matrix.confusionMatrix

0th

Percentile

Confusion matrix as a table

Conversion functions for class confusionMatrix

Keywords
utilities
Usage
# S3 method for confusionMatrix
as.matrix(x, what = "xtabs", ...)
Arguments
x

an object of class confusionMatrix

what

data to convert to matrix. Either "xtabs", "overall" or "classes"

not currently used

Details

For as.table, the cross-tabulations are saved. For as.matrix, the three object types are saved in matrix format.

Value

A matrix or table

Aliases
  • as.matrix.confusionMatrix
  • as.table.confusionMatrix
Examples
# NOT RUN {
###################
## 2 class example

lvs <- c("normal", "abnormal")
truth <- factor(rep(lvs, times = c(86, 258)),
                levels = rev(lvs))
pred <- factor(
               c(
                 rep(lvs, times = c(54, 32)),
                 rep(lvs, times = c(27, 231))),
               levels = rev(lvs))

xtab <- table(pred, truth)

results <- confusionMatrix(xtab)
as.table(results)
as.matrix(results)
as.matrix(results, what = "overall")
as.matrix(results, what = "classes")

###################
## 3 class example

xtab <- confusionMatrix(iris$Species, sample(iris$Species))
as.matrix(xtab)

# }
Documentation reproduced from package caret, version 6.0-84, License: GPL (>= 2)

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