Well, I think I used io_signature correctly. And, as I am using
gr_sync_block, I dont need to worry about forecast, set_output_multiple or
gr_sync_decimator. (I hope this understanding is correct?!)
I have read the " how to write a block" and followed what's in there, but if
you guide me to bette
On Sat, Jun 12, 2010 at 03:40:21PM -0700, Sammour wrote:
>
> Thanks for everyone, I sorted the problem out. I needed to increment "out"
> after memcpy and then return noutput_items/(N*N).
>
> Cheers,
> Sam
OK. Glad you (think) you solved your problem.
Given that your block was asked to compute
4.000e+00
>4.000e+00
>4.0000000e+00
>4.000e+00
>0.0000000e+00
>0.000e+00
>0.000e+00
>0.000e+00
>0.000e+00
>0.000e+00
>
> I hope the situation is now clearer.
>
> Cheers,
> Sam
>
gr_complex *) output_items[0];
gr_complex out_vector [N*N];
const gr_complex *in[N];
for (unsigned int i = 0; i To: samy-1...@live.com; g...@toad.com
> Subject: Re: [Discuss-gnuradio] complex vector output of a block
> Date: Wed, 9 Jun 2010 16:49:15 -0700
> From: g...@toad
Tom,
I only need a single sample from each stream to generate the vector ( there
is a method of doing this in signal processing) and I am inherting from
gr_sync_block as the block is 1:1. I am also returning noutput_items and
didn't use consume_each() of course. Thanks anyway.
Still thinking :)
On Wed, Jun 9, 2010 at 5:37 PM, Sammour wrote:
>
> HI Eric,
>
> Thanks for replying. My block has N=2:12 complex input streams and one
> complex vector output stream of length N^2 (represents a reshaped NxN
> matrix). The block basically is meant to calculate the covariance matrix
> using a MATLAB
HI Eric,
Thanks for replying. My block has N=2:12 complex input streams and one
complex vector output stream of length N^2 (represents a reshaped NxN
matrix). The block basically is meant to calculate the covariance matrix
using a MATLAB library.
The signatures are:
input: gr_make_io_signature (
On Wed, Jun 09, 2010 at 03:40:07AM -0700, Sammour wrote:
>
> Dear all,
>
> I'm writing a block that outputs a vector of complex number inheriting from
> gr_sync_block. In my code I wrote:
> gr_complex *out =(gr_complex *) output_items[0];
> gr_complex out_vector [N*N];
>
> where out_
Thanks again Martin.
I believe the problem is not in the algorithm as I actually tested it and
can print the output of it on the screen as you suggested (I mean "out" in
my original post). Everything excellent at this stage. However, the problem
is that the block in GRC doesn't generate output.
On Wed, Jun 09, 2010 at 06:06:01AM -0700, Sammour wrote:
> Thanks for replying. N is designed to be 2:12.
> The block uses a number of inputs (N) to update a matrix that I am sending
> to the output as a vector that will be reshaped in the next block when it
> is used. Do you think that my progra
To isolate the problem, I removed all the complex code and wrote the
following in work() to generate a vector of random numbers:
gr_complex *out =(gr_complex *) output_items[0];
unsigned int index = 0;
for (unsigned int m =1; m<=4; m++)
{
*(out+inde
Dear Martin,
Thanks for replying. N is designed to be 2:12.
The block uses a number of inputs (N) to update a matrix that I am sending
to the output as a vector that will be reshaped in the next block when it
is used. Do you think that my programme takes much time to execute?
Cheers,
Sam
--
On Wed, Jun 09, 2010 at 03:40:07AM -0700, Sammour wrote:
> Dear all,
>
> I'm writing a block that outputs a vector of complex number inheriting from
> gr_sync_block. In my code I wrote:
> gr_complex *out =(gr_complex *) output_items[0];
> gr_complex out_vector [N*N];
>
> where out_vec
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