Entering separate column names gives values in that column

Question

Entering separate column names gives values in that column

Sorry if this sounds like a rookie question, but it messed me up: Are you standardly allowed to type in a partial column name and it won't throw an error, but "guess" based on the name? For example:

d = data.frame(test = c(1,2,3,4),
           tmp = c(5,6,7,8),
           tmp1 = c(9,10,11,12))

If I type 'd $ te' I get:

d$te
[1] 1 2 3 4

but if I type:

d$tm
NULL

I would rather get an error as I type d$tes

. Is this the default behavior and can this be changed?

+3

r

David S June 27. 17 at 16:55

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1 answer

Andrew taylor · Accepted Answer · 2017-06-27T17:01:39+0000

This is a well-known feature. Instead, switch your data.frame to a slice:

library(tibble)
d <- as_tibble(d)
d$te

NULL
Warning message:
Unknown or uninitialised column: 'te'.

Entering separate column names gives values ​​in that column

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Entering separate column names gives values in that column