as.matrix.confusionMatrix
From caret v6.0-86
by Max Kuhn
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
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)
# }
Community examples
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