Could not find svmRadial function


#1

When I attempt to run the code below, I get the following error

library(caret)
library(kernlab)
library(ROCR)
dim(svm.data)

set.seed(123)
ctrl <- trainControl(method="cv", number = 2, summaryFunction=twoClassSummary, classProbs=TRUE)
   grid <- expand.grid(sigma = c(.01, .015, 0.2), C = c(0.75, 0.9, 1, 1.1, 1.25)
  svm.tune <- train(x=trainX, y= svm.train$Class, method = “svmRadial”, metric=”ROC”, tuneGrid = grid, trControl=ctrl) 
Error: could not find svmRadial function

#2

Hmm, I'm not sure how to reproduce your error.

svmRadial is a method in caret, not a function, so I'm not sure why you'd be getting that error (example from SO thread, below):

library(caret)
#> Loading required package: lattice
#> Loading required package: ggplot2

data(iris)
TrainData <- iris[,1:4]
TrainClasses <- iris[,5]

out1 <- train(TrainData, TrainClasses, method = "svmRadial")
class(out1$finalModel)
#> [1] "ksvm"
#> attr(,"package")
#> [1] "kernlab"

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