The cells_source_notes() function is used to target all source notes in the
footer section of the table. This is useful for adding custom styles to the
source notes with tab_style() (using the locations argument). The
'source_notes' location is generated by the tab_source_note() function.
This location helper function cannot be used for the locations argument of
tab_footnote() and doing so will result in a warning (with no change made
to the table).
cells_source_notes()A list object with the classes cells_source_notes and
location_cells.
Location helper functions can be used to target cells with virtually any
function that has a locations argument. Here is a listing of all of the
location helper functions, with locations corresponding roughly from top to
bottom of a table:
cells_title(): targets the table title or the table subtitle depending on
the value given to the groups argument ("title" or "subtitle").
cells_stubhead(): targets the stubhead location, a cell of which is only
available when there is a stub; a label in that location can be created by
using the tab_stubhead() function.
cells_column_spanners(): targets the spanner column labels with the
spanners argument; spanner column labels appear above the column labels.
cells_column_labels(): targets the column labels with its columns
argument.
cells_row_groups(): targets the row group labels in any available row
groups using the groups argument.
cells_stub(): targets row labels in the table stub using the rows
argument.
cells_body(): targets data cells in the table body using intersections of
columns and rows.
cells_summary(): targets summary cells in the table body using the
groups argument and intersections of columns and rows.
cells_grand_summary(): targets cells of the table's grand summary using
intersections of columns and rows
cells_stub_summary(): targets summary row labels in the table stub using
the groups and rows arguments.
cells_stub_grand_summary(): targets grand summary row labels in the table
stub using the rows argument.
cells_footnotes(): targets all footnotes in the table footer (cannot be
used with tab_footnote()).
cells_source_notes(): targets all source notes in the table footer
(cannot be used with tab_footnote()).
When using any of the location helper functions with an appropriate function
that has a locations argument (e.g., tab_style()), multiple locations
can be targeted by enclosing several cells_*() helper functions in a
list() (e.g., list(cells_body(), cells_grand_summary())).
Let's use a subset of the gtcars dataset to create a gt table. Add a
source note (with tab_source_note()) and style the source notes section
inside the tab_style() call by using the cells_source_notes() helper
function for the targeting via the locations argument.
gtcars |>
dplyr::select(mfr, model, msrp) |>
dplyr::slice(1:5) |>
gt() |>
tab_source_note(source_note = "From edmunds.com") |>
tab_style(
style = cell_text(
color = "#A9A9A9",
size = "small"
),
locations = cells_source_notes()
)

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v0.3.0 (May 12, 2021)
Other helper functions:
adjust_luminance(),
cell_borders(),
cell_fill(),
cell_text(),
cells_body(),
cells_column_labels(),
cells_column_spanners(),
cells_footnotes(),
cells_grand_summary(),
cells_row_groups(),
cells_stub_grand_summary(),
cells_stub_summary(),
cells_stubhead(),
cells_stub(),
cells_summary(),
cells_title(),
currency(),
default_fonts(),
define_units(),
escape_latex(),
from_column(),
google_font(),
gt_latex_dependencies(),
html(),
md(),
nanoplot_options(),
pct(),
px(),
random_id(),
stub(),
system_fonts()