Dear all,
I have recently been trying to write a plotting function where a external PNG
file is drawn onto a ggmap object.
I managed to achieve this by using ggmap::inset , inputting as a grob the
result of applying grid::rasterGrob to the image rotated with
magick::image_rotate .
I therefore added ggmap, ggplot2, grid and magick to Imports in DESCRIPTION,
and added the corresponding imports in NAMESPACE
However, when running R CMD check, I got an error saying 'could not find
function editGrob', when running the example code for the mentioned plotting
function.
I confirmed the error also happens if I install and load the package in a fresh
R session.
If I then load explicitly grid through library(grid), the error disappears.
I tried to add explicitly importFrom("grid", editGrob) to NAMESPACE, but that
made no difference.
I have only been able to solve the problem by adding "grid" to Depends in
DESCRIPTION instead of Imports.
The code for the problematic plotting function can be found at
https://github.com/Rafael-Ayala/openSkies/blob/main/R/openSkies_plottingFunctions.R
(lines 61 to 91)
I would greatly appreciate if anybody could clarify why "grid" needs to be
added to Depends in this case, and why not even adding NAMESPACE
importFrom("grid", editGrob) fixes the problem if "grid" is left in Imports!
Thanks a lot in advance
Best wishes,
Rafa
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