Hi again, I uninstalled what I had installed through PyBOMBS and installed Gnuradio 3.7 through the build_gnuradio script. Then I tried Jareds repo for specest with 3.7 (http://www.github.com/dfxx) and it seems to compile just fine, well done! I can also import specest in python without problems.
Now: I would very much like to use the block moving_average_vff in Gnuradio Companion. Unfortunately it seems there are no xml files for that block, hence invisible to the GRC. I got a hint from Martin Braun that I could use the "gr_modtool makexml" command to generate this. Unfortunately it seems that I don't understand how to use it: ------------------------ gr_specest_jared$ ls apps AUTHORS build cmake CMakeLists.txt COPYING docs examples grc include lib python README swig gr_specest_jared$ gr_modtool makexml moving_average_vff GNU Radio module name identified: specest Warning: This is an experimental feature. Don't expect any magic. Searching for matching files in lib/: None found. ------------------------- There is a file called moving_average_vff.cc in the lib directory, so I guess something more is needed here which I don't know about. I tried looking at the page http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModules?version=16#Making-your-blocks-available-in-GRCwhere there are links to example xml blocks to understand a bit more, but it seems these links are broken. Also the link to the gr_block documentation in the next section (There's more:...) is broken. I'm grateful for any hints on how to make the block moving_average_vff visible in the GRC. Best regards, Eskil 2013/10/4 Jared Clements <jared.cleme...@gmail.com> > I updated gr-specest so it would compile with 3.7, see my repo on > www.github.com/dfxx if you want to try that route. The changes were > almost all namespace stuff and cmake stuff, i.e. I don't think I broke > anything. > > Jared > On Oct 4, 2013 7:33 AM, "Eskil Varenius" <eskil.varen...@gmail.com> wrote: > >> Hi everyone, >> After a long break since June I am now back learning about Gnuradio. I >> asked in June for a way to average vectors elementwise and Martin Braun >> suggested the moving_average_Vff block in the gr-specest. He also said it >> would be available PyBOMBS. Now update: >> >> Since I had installed Gnuradio using the build-script I wanted to >> re-install it using pybombs. I uninstalled the old gnuradio by doing a >> "sudo make uninstall" in each build directory for the old release. Seems to >> work. Now I installed gnuradio 3.6 (since gr-specest is still only verified >> for 3.6, although I'm happy to see people working towards a 3.7 release). I >> did the install using the instructions on the pybombs quickstart page: >> >> git clone git://github.com/pybombs/pybombs >> cd pybombs >> git checkout gr-3.6 >> ./pybombs install gnuradio >> >> Gnuradio seemed to install without problems but: I realised I had >> path-problems since I could not start anything (gnuradio companion, import >> gnuradio etc. fails). Perhaps this was related to me using a custom target >> directory (/opt/gnuradio_pybombs). I looked around and found path >> instructions for custom directory installs at " >> http://gnuradio.org/redmine/projects/gnuradio/wiki/UbuntuInstall#Installing-in-a-custom-directory";, >> i.e. put the following in my .bashrc: >> >> # GNU Radio installation >> export PATH=$PATH:/opt/gnuradio_pybombs/bin >> export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/gnuradio_pybombs/lib >> export >> PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/opt/gnuradio_pybombs/lib/pkgconfig >> export >> PYTHONPATH=$PYTHONPATH:/opt/gnuradio_pybombs/lib/python2.6/site-packages >> >> However, that didn't work completely - I still could not find the >> gnuradio python module. I realised two things: the 2.6 should probably be >> 2.7 for me, and also the pythonpath should end in dist-packages, not >> site-packages, since the site-packages folder was empty. After modifying >> the pythonpath with 2.7 and dist-packages everything runs, I can import >> gnuradio and also use gnuradio companion. So far so good! >> >> Now for gr-specest. I tried to install it using app store (cool stuff, >> you guys are amazing!) and also just command line which is equivalent, i.e. >> I run using "sudo ./pybombs install gr-specest" I get a lot of output, but >> the perhaps most interesting one before it ends abruptly is: >> -- checking for module 'gruel' >> -- package 'gruel' not found >> -- Could NOT find GRUEL (missing: GRUEL_LIBRARIES GRUEL_INCLUDE_DIRS) >> -- checking for module 'gnuradio-core' >> -- package 'gnuradio-core' not found >> -- Could NOT find GNURADIO_CORE (missing: GNURADIO_CORE_LIBRARIES >> GNURADIO_CORE_INCLUDE_DIRS) >> CMake Error at CMakeLists.txt:100 (message): >> Gruel required to compile specest >> >> I am lost here. Any ideas? I can give the rest of the output as well, but >> this is the showstopper as far as I can see. I have tried googling this, >> but it seems to me that the solution used is to use the build-gnuradio >> script instead of PyBOMBS. I could do that, but then I would not be able to >> enjoy installing gr-specest through the app-store ;). Grateful for any >> advice. >> >> Cheers, >> Eskil >> >> >> 2013/6/24 Martin Braun (CEL) <martin.br...@kit.edu> >> >>> On Mon, Jun 24, 2013 at 02:09:51PM +0200, Eskil Varenius wrote: >>> > The grand plan is as follows: >>> > 1) Use an USRP to recieve a signal, I know how. >>> > 2) Divide the stream of samples into vectors, I know how. >>> > 3) Take the FFT of the vectors one by one, I know how. >>> > 4) Average the vectors coming from the FFT together element-wise. I >>> don't know >>> > how. >>> > 5) Save the averaged vector to a file, I know how. >>> > >>> > What I cannot solve is step 4: I need to take the N vectors (each of >>> size M) >>> > coming from the FFT-block and sum them together element-wise to >>> produce one >>> > vector of size M. >>> >>> The spectral estimation toolbox (gr-specest) has a block to do this >>> (moving_average_vff). You can get it through PyBOMBS, it is not yet >>> 3.7-compatible, though. >>> >>> https://github.com/kit-cel/gr-specest >>> >>> MB >>> >>> -- >>> Karlsruhe Institute of Technology (KIT) >>> Communications Engineering Lab (CEL) >>> >>> Dipl.-Ing. Martin Braun >>> Research Associate >>> >>> Kaiserstraße 12 >>> Building 05.01 >>> 76131 Karlsruhe >>> >>> Phone: +49 721 608-43790 >>> Fax: +49 721 608-46071 >>> www.cel.kit.edu >>> >>> KIT -- University of the State of Baden-Württemberg and >>> National Laboratory of the Helmholtz Association >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >>
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