Hey guys, i somehow cant fit my train data. I always get this error. "Error in eval(predvars, data, env) : object 'X1' not found" I dont really know why. Please help me.
This is my code:
# Daten einlesen
diabetes<-read.csv(url('https://raw.githubusercontent.com/jbrownlee/Datasets/master/pima-indians-diabetes.data.csv'))
table(diabetes$X1)
prop.table(table(diabetes$X1))
barplot(table(diabetes$X1))
# Daten splitten
index <- createDataPartition(diabetes$X1, p = 0.8, list = FALSE)
train_data <- elena[index, ]
test_data <- elena[-index, ]
# Confusion-Matrix für Test-Data
library(rpart)
library(caret)
library(e1071)
fit_train <- rpart(X1~., data = train_data, method = "class", control = rpart.control(cp = 0))
rpart.plot(fit_train, extra=4)
printcp(fit_train)
plotcp(fit_train)