See http://www.vaa3d.org/ https://github.com/Vaa3D/v3d_external/blob/master/imagej_io/v3draw_io_imagej/raw_reader.java
is.vaa3draw(f, bytes = NULL)
A character vector specifying the path or a raw vector (see
bytes
).
optional raw vector of at least 24 bytes from the start of a
single file (used in preference to reading file f
).
Note that multiple files can be checked when a character vector of length > 1 is provided, but only one file can be checked when a raw byte array is provided.