CODEWITHSUNDEEP
rlistindexing
lydias
lydias

Reputation: 841

R indexing by column name from a list not working

Suppose I have a dataset, CT_Data, in list format with internet1_group as an item in the list such that:

 $ internet1_group : Factor w/ 3 levels "1","2","3": 3 1 2 1 1 3 2 1 2 1 ...

I will be creating Dependent_Variable_List as a character with the following value:

 Dependent_Variable_List <- Dependent_Variable_List[Dependent_Variable_List %in% colnames(CT_Data)]

 Dependent_Variable_List
 [1] "internet1_group"

Now I'm trying to index Dependent_Variable levels in dataset CT_Data, and store the levels in CT_Vars list.

CT_Vars <- list()
CT_Vars[["DV_Levels"]] <- levels(CT_Data[, Dependent_Variable_List])

I keep on getting CT_Vars[["DV_Levels"]] as NULL, could anyone help me to debug the issue? Thanks!

Upvotes: 1

Views: 372

Answers (1)

user2602640
user2602640

Reputation: 740

You're saying that CT_Data is a list, but your call is structured for a data frame. Does this work? If not, can you run dput(CT_Data) and paste the results in your question?

CT_Vars[["DV_Levels"]] <- levels(CT_Data[[Dependent_Variable_List]])

Upvotes: 2

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