R（插入符号）在'；replace=FALSE'；

我正在尝试使用R中的插入符号包训练多项式支持向量机，并获得问题标题中所述的错误消息。我在谷歌上很难找到一个解决方案，不知道是否有人能指导我找到一个解决方案

我的代码在下面共享

Train_CTRL <- trainControl(method = "repeatedcv", 
                           number = 10, repeats = 5)
SVM_Poly <- train(Degree~., 
                  data = Train_Set_Norm, 
                  method = "svmPoly",
                  trControl = Train_CTRL,
                  tuneLength = 1000)

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Train\u CTRL错误非常简单。它表示，在您的数据集中，样本数少于1000
tuneLength
应小于数据集中每个组/类的样本数。由于您没有提供数据，我可以使用
iris
数据重现您的错误，如

library(caret)

Train_CTRL <- trainControl(method = "repeatedcv", 
                           number = 10, repeats = 5)
SVM_Poly <- train(Species~., 
                  data = iris, 
                  method = "svmPoly",
                  trControl = Train_CTRL,
                  tuneLength = 1000)

SVM_Poly <- train(Species~., 
                  data = iris, 
                  method = "svmPoly",
                  trControl = Train_CTRL,
                  tuneLength = 10)