Re: Problems in my Python OOT specifications using input and output vectors

Hello GNURadio Community, 

No need to respond to my posting, I figured it out.

Thank you!

George

On Wed, Jul 20, 2022 at 1:01 PM George Edwards <gedwards.eng@gmail.com> wrote:

Hello GNURadio Community, 

I wrote a Python OOT block that takes a vector input and outputs a vector of the same size.

In the grc, my OOT block is preceeded by a stream to vector and followed by a  vector to stream (I specify the vector number items in both blocks as well as the yml for my Python OOT). My problem lies in the input/output specification that I am unable to figure out.

First I specified the input/output profile as:

in_sig = [np.float32*vectlen],

out_sig =  [np.float32*vectlen])

The OOT compiled, but when I ran the grc, it showed that the * breaks the code.

Next I tried:

in_sig = [(np.float32, vectlen)],

out_sig =  [(np.float32, vectlen)])

The grc plot for the output came up, but did not work. So I put in some print statements in the work() function after the following lines:

in0 = input_items[0]

out = output_items[0]

print("length of input data: {}".format(len(in0))

for i in range (0, vectlen):

     print(" Iteration i = {}".format(i))

     out[i] = in0[i]

The printed results in the grc were:

length of input data:  4   definitely an indication of error

For the Iterations it printed i = 0,1,2,3,4 and broke with an Error stating index 4 is out of bound for axis 0.

Obviously, my input/output profile specification must be the problem. 

I will appreciate any help or suggestions.

Thank you!

George