我在函数

Question

****library(readxl)
library(tidyverse)
library(xgboost)
library(caret)
library(dplyr)

setwd("C:/Users/ASMD/Desktop/R files jnefjenfjne")

Data1 = as.data.frame(read_excel("r.xlsx"), header = TRUE)
head(Data1)
summary(Data1)
dim(Data1)
names <- names(Data1)

set.seed(100)

inTrain <- createDataPartition(y=Data1$TLS, p = 0.8, list = FALSE )

training <-Data1[inTrain,]




testing <-Data1[-inTrain,]
**X_train = xgb.DMatrix(as.matrix(training %>% select(-TLS)))**


y_train = training$TLS
X_test = xgb.DMatrix(as.matrix(testing %>% select(-TLS)))
y_test = testing$TLS****

弹出的错误是：

  

X_train = xgb.DMatrix（as.matrix（training％>％select（-TLS）））错误   select（。，-TLS）：未使用的参数（-TLS