How to select columns, which DO NOT contain a specific character?

Asked Jun 03 '19 at 11:51

Active Jun 03 '19 at 12:05

Viewed 63 times

Consider a vector including predictor names for a glm analysis like as

    pred_vec <- c("var1", 
                  "var2", 
                  "var3", 
                  "var4", 
                  "var1*var2", 
                  "var1*var3", 
                  "var1*var4")

where * indicates the interaction between two predictors! I want to select those elements of pred_vec which do not contain *, i.e.

pred_vec_new <- c("var1", 
                  "var2", 
                  "var3", 
                  "var4")

I need it to construct my Dataset for glm as

Dataset <- Dataset[ , pred_vec_new]

edited Jun 03 '19 at 12:05

asked Jun 03 '19 at 11:51

Fateta

3

`pred_vec[grep("*", pred_vec, fixed = TRUE, invert = TRUE)]` – s_baldur Jun 03 '19 at 12:04
or `pred_vec[!grepl("*", pred_vec, fixed = TRUE)]` and `Dataset[!grepl("*", pred_vec, fixed = TRUE)]` – jogo Jun 03 '19 at 12:10

How to select columns, which DO NOT contain a specific character?

0 Answers0