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[Discuss-gnuradio] GrBlock Inconsistent IO Size
From: |
Jason Bonior |
Subject: |
[Discuss-gnuradio] GrBlock Inconsistent IO Size |
Date: |
Fri, 28 Oct 2011 12:05:36 -0500 |
I used grblock and numpy to create a block which would calculate the
variance of an incoming vector then pass on the result:
class variance(grblock.sync_block):
def __init__(self):
grblock.sync_block.__init__(
self,
name = "variance",
in_sig = [(numpy.float32, 2048)],
out_sig = [numpy.float32],
)
def work(self, input_items, output_items):
output_items[0][:] = numpy.var(input_items[0])
print output_items[0][:].shape
print input_items[0].shape
return len(output_items[0])
I added the print .shape commands to make sure that the block IO was
performing as expected. Most of the time I get (1, 2048) and (1, ) as
I would expect but occasionally I get (2, 2048) (2, ) up to (5, 2048)
(5,). Has anyone else seen anything like this or know how it might
affect the performance of the block?
--
Jason Bonior
- [Discuss-gnuradio] GrBlock Inconsistent IO Size,
Jason Bonior <=