Hi to all, As I mentioned above, I am trying to plot the real-time outputs of a grc file. I am using the approach given in the link below. Taking two outputs via message sink and then plotting them by matplotlib functions.
http://recolog.blogspot.com.tr/2015/08/processing-data-out-of-gnuradio.html In this approach, GRC is running "in background". Even I have number sinks, sliders or other wx/qt gui tools, they are not shown. Only matplotlib plots the data. In short, I want to see both matplotlib figure and for example a WX FFT Sink window of GNURadio. Is it possible? How? Thanks, Ali 2017-09-28 9:36 GMT+03:00 Ali <03do...@gmail.com>: > Hi to all, > > For those who are interested in, the approach in the following link seems > to be useful. I tried for my case, and it is working fine. > > http://recolog.blogspot.com.tr/2015/08/processing-data- > out-of-gnuradio.html > > Thanks, > Ali > > 2017-09-21 20:04 GMT+03:00 Marcus Müller <marcus.muel...@ettus.com>: > >> Interesting! >> >> So, my approach in this case would be: >> >> 1. Write a block that takes the data from your flow graph, and converts >> it to a format (e.g. JSON, KML, GPX,…) that makes sense for the receiving >> end. This data should be emitted as messages (not python variables). >> 2. use a UDP or ZeroMQ (I recommend the latter) to send these messages out >> 3. Write a really minimal web application that receives the things from >> 2. and updates a browser visualization. Use your own images or simply >> OpenStreetMap as base layer. >> >> You can of course also write your own visualization block. That's >> absolutely feasible; it's just that matplotlib is really not the tool of >> choice for that here. But it's definitely not the software you need, >> either, to draw points on an image. There's literally dozens of python >> toolkits that can display images and modify them. >> >> Writing visualization blocks will require you to think about how to >> thread them. And since it'll be hard for the block to interact with the >> main thread, but that would be necessary for GUI blocks to work, I don't >> know whether that is an entry level project. Anyway, do have a look at Tim >> O'Shea gr-pyqt ; it contains python visualization blocks, and I don't think >> it'll be hard to understand and modify them. Look at the raster_plot.py for >> example. >> >> Best regards, >> >> Marcus >> On 09/20/2017 10:21 PM, Ali wrote: >> >> Hi, >> >> Actually I want to draw coordinates on a map. So I want to upload a map(a >> png file, like using imshow function in MATLAB, matplotlib) and then draw >> points on this map. I think it is not possible by just using QT >> instruments. >> >> Regards, >> Ali >> >> 2017-09-20 21:14 GMT+03:00 Marcus Müller <marcus.muel...@ettus.com>: >> >>> Dear Ali, >>> >>> don't convert data streams to Python variables. Just use the Qt >>> instrumentation plots that directly come with GNU Radio, they are actually >>> meant for this. >>> >>> Matplotlib is *definitely* not what you want to use for live plots. Far >>> too slow. >>> >>> Best regards, >>> >>> Marcus >>> >>> On 09/20/2017 01:29 AM, Ali wrote: >>> >>> Hi everyone, >>> >>> I have a flowchart in which USRP's are running and after some blocks 2 >>> variables are produced at the output. >>> >>> As the inputs change, outputs change. I want to *dynamically* plot >>> these two variables on x and y axis. I am willing to use matplotlib. >>> >>> What do you suggest to plot these variables? >>> >>> 1- Write them to a .txt file and read by matplotlib at the same time, >>> 2- Without writing the variable anywhere, directly use in >>> matplotlib(somehow) >>> 3- Write a python block and use in GRC directly >>> >>> I don't know whether these can be applied or not. I am open to any ideas. >>> >>> Regards, >>> Ali >>> >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing >>> listDiscuss-gnuradio@gnu.orghttps://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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