WHY THIS IS NOT IN theme_cyto(): putting a border on every panel would box
the single-panel figures too, where there is nothing to divide and the frame
is just ink. This is for figures whose panels are meant to be COMPARED.
Usage
theme_panel_borders(colors = fcs_colors(), spacing = 0.7)Arguments
- colors
Named list of colours; defaults to the package palette. Default
fcs_colors().- spacing
Gutter between panels, in lines. Default
0.7.
Details
WHY A BORDER AT ALL. Two scatters side by side with nothing between them read
as one wide cloud: the eye has to find the boundary from a gap in the point
density, and where a facet's cells reach the edge of their panel there is no
gap to find. A thin border and a wider gutter make the division explicit at a
glance. umap_<marker>_by_<category>.png has always done this; every other
multi-panel figure in the package now does it through this one function, so a
report cannot contain framed and unframed versions of the same kind of figure.