dplyr - why does R markdown says that the column is not found?

Question

I am trying to create a table in R, but it says there is no such column. Here is what I have done:

invis_tib <- readr::read_csv("/Users/bahar/Desktop/yeni_r/veri/invisibility.csv")
─ Column specification ────────────────────────────────────────────────────────────

cols( id;cloak;mischief = col_character() )

``{r,echo=FALSE}
invis_sum <-invis_tib %>%
dplyr::group_by(cloak) %>%
dplyr::summarize(
n=n(),
mean=mean(mischief),
`std.dev` =sd(mischief)

)

Error: Must group by variables found in `.data`. * Column `cloak` is not found.

Please help me to get handle this.

Someone commented use csv2, so I tried and got this:

``? Using ',' as decimal and '.' as grouping mark. Use     `read_delim()`       for more control.

── Column specification   ────────────────────────────────────────────────────────────
cols(
id = col_double(),
cloak = col_character(),
mischief = col_double()
)

[1] "id"       "cloak"    "mischief"

But when I run the code for the mean and sd nothing happens, when I knit I just get ...

question from:https://stackoverflow.com/questions/65944983/why-does-r-markdown-says-that-the-column-is-not-found

Answer 1

Waitting for answers