Dear all,
I want to save a matrix of integers into a file, similar to .mat file in
MATLAB. To be more specific, my desire block should receive a stream of
integers, convert it to MxN matrix and save this matrix so that I can
get this data for further process after the flow graph stops.
Could you give me some clue to do this in GNU Radio?
Thank in advance,Hoang
Hoang Ngo-KhacResearch Assistant - Lab. of Signal and System, FET, UET,
Vietnam National University-Hanoi (VNU-H)Alternative email: [email protected], [email protected]:
+84.163.682.7874
I’m not familiar with python. I’ve written a C++ block to write integers
to a text file. I use fstream.h library. Some code in general work
function:
std::ofstream fw(d_filename); unsigned char iptr = (unsigned
char)input_items[0]; if (fw.is_open()) { for(int i =
0; i < noutput_items * d_vlen; i++) {
d_data.push_back (iptr[i]); if (((i+1)%10) == 0) fw<<(int)
d_data[i]<<std::endl; else fw<<(int) d_data[i]<<" ";
} fw.close (); } else throw
std::runtime_error(“Error: Can’t open file”);
When I connect this block directly to one source clock (e.g. Vector
Source), this block successfully captures all the input data and write
them to text file.
However, when I used this block at the end of a OFDM simulation flow
graph, it only wrote very few data to the file though I keep the flow
graph running for long time. I printed the input data in Terminal window
and see that the data stream still flow continuously.
Hoang Ngo-KhacResearch Assistant - Lab. of Signal and System, FET, UET,
Vietnam National University-Hanoi (VNU-H)Alternative email: [email protected], [email protected]:
+84.163.682.7874
This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.