[Numpy-discussion] 2 i/o questions and an announcement
nick at nickbower.com
nick at nickbower.com
Wed Sep 6 04:47:26 EDT 2000
2 really quick questions and an announcement of sorts:
1) Is NumPy v2.0 going to address binary file io at all? Right now, I
use the array module with the "fromfile" method, but this then has to be
re-cast to a NumPy array, which seems inefficient (although I've no
evidence for that), especially for large 50-100 meg data files.
2) Is there a quicker way to get data from PIL to NumPy than:
data = array(Image.open(...).getdata(), typecode=Int)
this takes an eternity for a decent sized image (1.5 minutes on a P400
for a 1200x1000 image).
Some of you may already know, but I've taken a first crack at an free
clone of IDL (as in RSI's Interactive Data Language, which has
similarities to MatLab). Cohesive integration of 2D plotting/contouring
(Dislin), 8/24-bit imaging (PIL) and array arithmetic (NumPy) has been
implemented using standard IDL syntax -
http://nickbower.com/computer/pydl
Cheers, nick.
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