Hello Marcus and all, Sorry to keep dragging on with this vector decimate.
I’ve gotten “vave” into grc but it is not running properly.
The grc messages I get are below:
Generating: '/Users/glangsto/Desktop/Research/vdecimate/keep5.py'
Executing:
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
-u /Users/glangsto/Desktop/Research/vdecimate/keep5.py
Number work inputs : 1 Length: 10
Number work outputs: 1 Length: 10
Number work inputs : 1 Length: 10
Number work outputs: 1 Length: 10
handler caught exception: operands could not be broadcast together with shapes
(4,) (10,)
Traceback (most recent call last):
File
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/gnuradio/gr/gateway.py",
line 55, in eval
try: self._callback()
File
"/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/gnuradio/gr/gateway.py",
line 160, in __gr_block_handle
) for i in self.__out_indexes],
File "/Users/glangsto/Desktop/Research/gr-vave/python/vave.py", line 73, in
work
self.sum[0:ncp] = self.sum[0:ncp] + vin[0:ncp]
ValueError: operands could not be broadcast together with shapes (4,) (10,)
thread[thread-per-block[4]: <block vave (1)>]: SWIG director method error.
Error detected when calling ‘feval_ll.eval'
I’ve tweaked the python and attached the .xml etc
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2018 <+YOU OR YOUR COMPANY+>.
#
# This is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this software; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
import numpy
from gnuradio import gr, gr_unittest
from gnuradio import blocks
from vave import vave
class qa_vave (gr_unittest.TestCase):
def setUp (self):
self.tb = gr.top_block ()
def tearDown (self):
self.tb = None
def test_001_t (self):
vsize = 1024
vdecimate = 4
vin = numpy.zeros(vsize*vdecimate)
for i in range(vsize):
vin[i] = float(i)
# create a set of vectors
src = blocks.vector_source_f( vin.tolist())
s2v = blocks.stream_to_vector(gr.sizeof_float, vsize)
# block we're testing
vblock = vave( vsize, vdecimate)
v2s = blocks.vector_to_stream( gr.sizeof_float, vsize)
snk = blocks.vector_sink_f(vsize)
self.tb.connect (src, s2v)
self.tb.connect (s2v, vblock)
self.tb.connect (vblock, snk)
# self.tb.connect (v2s, snk)
expected = vin[0:vsize]/4.
print 'Expected: ', expected[0:7]
outdata = None
waittime = 0.01
self.tb.run ()
outdata = snk.data()
print 'Output: ', outdata[0:7]
# check data
self.assertFloatTuplesAlmostEqual (expected, outdata, 6)
if __name__ == '__main__':
gr_unittest.run(qa_vave, "qa_vave.xml")
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2018 <+YOU OR YOUR COMPANY+>.
#
# This is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this software; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
import numpy
from gnuradio import gr
class vave(gr.decim_block):
"""
docstring for block vave
"""
def __init__(self, vsize, vdecimate):
gr.decim_block.__init__(self,
name="vave",
in_sig=[(numpy.float32, int(vsize))],
out_sig=[(numpy.float32, int(vsize))],
decim=int(vdecimate))
self.vsize = int(vsize)
self.vdecimate = int(vdecimate)
self.sum = numpy.zeros(self.vsize)
self.count = 0
self.oneovern = 1./float(self.vdecimate)
def forecast( self, noutput_items, ninput_items):
return self.vdecimate
def work(self, input_items, output_items):
"""
Work averages all input vectors and outputs one vector for all inputs
"""
out = output_items[0]
in0 = input_items[0]
# get the number of input vectors
n = len( input_items)
print 'Number of work inputs: ',n
nout = len( output_items)
print 'Number of work outputs: ',n
nv = len(in0)
for j in range(nv):
# get the lenght of one input
vin = in0[j]
print 'Length of input ', len(vin),' for vectors: ',j
# indicate consumption of a vector from input
self.consume(0, len(vin))
# now save this vector until all are received
self.sum = self.sum + vin
self.count = self.count + 1
if self.count >= self.vdecimate:
# normalize output average
out[:] = self.oneovern * self.sum[:]
# now reset the count and restart the sum
self.count = 0
self.sum = numpy.zeros( self.vdecimate)
return len(output_items[0])
# end for all input vectors
# if here, then not enough vectors input to produce an output
return 0
# end vave()
keep5.grc
Description: Binary data
vave_vave.xml
Description: XML document
The QA code runs fine all by itself. Some of the debugging print statements remain in the code Sorry for the long, complicated email. Suggestions? Best regards Glen
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