as.matrix.confusionMatrix

Confusion matrix as a table

Conversion functions for class confusionMatrix

Usage

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

Details

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

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)

# }