Sometimes you may want to see just a small portion of your input data. We can
use gt_preview() in place of gt() to get the first x rows of data and the
last y rows of data (which can be set by the top_n and bottom_n
arguments). It's not advised to use additional gt functions to further
modify the output of gt_preview(). Furthermore, you cannot pass a gt
object to gt_preview().
gt_preview(data, top_n = 5, bottom_n = 1, incl_rownums = TRUE)An object of class gt_tbl.
A data.frame object or a tibble.
This value will be used as the number of rows from the top of
the table to display. The default, 5, will show the first five rows of
the table.
The value will be used as the number of rows from the bottom
of the table to display. The default, 1, will show the final row of the
table.
An option to include the row numbers for data in the
table stub. By default, this is TRUE.
Use gtcars to create a gt table preview (with only a few of its
columns). You'll see the first five rows and the last row.
gtcars %>%
dplyr::select(mfr, model, year) %>%
gt_preview()

1-2
Any grouped data or magic columns such as rowname and groupname will be
ignored by gt_preview() and, as such, one cannot add a stub or group rows
in the output table. By default, the output table will include row numbers in
a stub (including a range of row numbers for the omitted rows). This row
numbering option can be deactivated by setting incl_rownums to FALSE.
Other table creation functions:
gt()