as.table.confusionMatrix
From caret v4.20
by Max Kuhn
Save Confusion Table Results
Conversion functions for class confusionMatrix
- Keywords
- utilities
Usage
## S3 method for class 'confusionMatrix':
as.matrix(x, what = "xtabs", ...)## S3 method for class 'confusionMatrix':
as.table(x, ...)
Arguments
- x
- an object of class
confusionMatrix
- what
- data to conver 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
See Also
Examples
###################
## 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
library(MASS)
fit <- lda(Species ~ ., data = iris)
model <- predict(fit)$class
irisTabs <- table(model, iris$Species)
results <- confusionMatrix(irisTabs)
as.table(results)
as.matrix(results)
as.matrix(results, what = "overall")
as.matrix(results, what = "classes")
Community examples
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