Display original and modified maps to determine necessary rotation
ms_rotate_map(map_original, map_modified, rotation = 0, apply_rotation = FALSE)
No return value. Function either modifies files on disk by rotating
images by the specified amount (if apply_rotation = TRUE
), or displays a
rotated version of map_original
(if apply_rotation = FALSE
).
File name of the original map without anything drawn over
it (either a .pdf
or .png
; extension will be ignored).
File name of the modified version with drawings (either a
.pdf
or .png
; extension will be ignored).
Rotation value to be applied, generally +/- 90
If FALSE
, display results of rotation without
actually applying it; otherwise transform the specified map_modified
image
according to the specified rotation.