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is_bm_bitmap() returns TRUE for bm_bitmap objects (or subclasses) and FALSE for all other objects.
is_bm_bitmap()
TRUE
bm_bitmap
FALSE
is_bm_bitmap(x)
TRUE or FALSE
An object
bm_bitmap()
space_matrix <- matrix(0L, nrow = 16L, ncol = 16L) is_bm_bitmap(space_matrix) space_glyph <- bm_bitmap(space_matrix) is_bm_bitmap(space_glyph)
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