How to add new column from list column value

Question

How to unlist list column and add new column from unlist column value in data frame.Can you please find my df below.

My data Frame.

Status       Audi         


        

Answer 1

As each of the list columns has a different structure, you'll have to deal with them in different ways.

With base R:

dfnew <- data.frame(df$Status,
                    do.call(rbind, lapply(df$AuditResult, function(x) sapply(x, toString))),
                    do.call(rbind, df$Deship),
                    do.call(rbind, lapply(df$Item, unlist)))
names(dfnew) <- sub('^.*\\.','',names(dfnew))

which gives:

> dfnew
    Status      DDID   Dvalue UserID        Add Menu Bill IDesc vendor
1   Active  2, First Bpin, 67      1 Stet, Bpin    1    9     A      5
2 Inactive Second, 8   CA, 98      2 Stet, Bpin    1    8 B,N,O      4
3   OnHold 78, 8, NA   UK, 76      1 Stet, Bpin    1    7   L,q      2

Answer 2

Assuming that the name of your data frame is called dt, here is an option.

library(tidyverse)

dt2 <- dt %>%
  select(Status, AuditResult) %>%
  mutate(DDID = map(AuditResult, ~.$DDID),
         Dvalue = map(AuditResult, ~.$Dvalue)) %>%
  mutate(DDID = map_chr(DDID, ~toString(.)),
         Dvalue = map_chr(Dvalue, ~toString(.))) %>%
  select(-AuditResult)

dt3 <- dt %>%
  select(Status, Deship) %>%
  unnest()

dt4 <- dt %>%
  select(Status, Item) %>%
  unnest() %>%
  unnest()

dt_final <- reduce(list(dt2, dt3, dt4), left_join, by = "Status")
dt_final
#     Status      DDID   Dvalue UserID        Add Menu Bill IDesc vendor
# 1   Active  2, First Bpin, 67      1 Stet, Bpin    1    9     A      5
# 2 Inactive Second, 8   CA, 98      2 Stet, Bpin    1    8 B,N,O      4
# 3   OnHold 78, 8, NA   UK, 76      1 Stet, Bpin    1    7   L,q      2