I am forming a data frame where one column is named as a major, and the second column is the list of courses in the major.
df <- data.frame(majors = majors)
df[, "courses"] <- courses, where majors are a vector and courses, is a list of lists. When I try to write using
write.csv(df, "Majors_and_Courses.csv", row. names = FALSE)
I get an error:
"Error in write.table(df, "Majors_and_Courses.csv", row.names = FALSE, : unimplemented type 'list' in 'EncodeElement'"
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Log in to answerBest Answer · By JanBask Data Science Expert
Answered on May 18, 2021
The perfect solution for unimplemented type 'list' in 'encodeelement' error is to use the data.table:
library(data.table)
dt <- data.table(majors = c("John", "Lisa", "Tim"))
courses <- list(a = list("m","n","o"), b = list("p", "q", "r"), c = list("s", "t", "u"))
dt[,"courses"] <- courses
dt$courses <- vapply(dt$courses, paste, collapse = "; ", character(1L))
write.csv(dt, "Majors_and_Courses.csv", row.names = FALSE)
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