Re: [Discuss-gnuradio] Question about gnuradio-companion

[Tom Rondeau]

On Mon, May 6, 2013 at 10:34 AM, Bennett, David S. (Scott)
<address@hidden> wrote:
>>
>> Yes, you're using the absolute path. I was just checking to see if you might
>> have been trying to create a file in a write-protected directory or a place 
>> that
>> didn't actually exist, which could have been a result of using a relative 
>> path
>> and having GRC point to a place you weren't expecting.
>>
>> But with this info, I'm not sure. That's not an error that GNU Radio is
>> producing; it's the OS. If you replace the file sink with something else 
>> (like a
>> null sink), do you get the same error? I'm just checking here to see if it's 
>> a
>> problem with the file you are trying to open or maybe complaining about
>> something else.
>>
>> Tom
>
> I just replaced the file sync with a null sync, and I still get that error in 
> gnuradio companion.  But as before if I execute the python script companion 
> generates, it executes fine.  So I'm not sure what's going on.
>
> In doing some additional troubleshooting over the last few minutes, though, I 
> hooked up a WX GUI FFT sync just to see if I could see something in the band 
> I was looking at.  I had forgotten that I set the "generate options" to "No 
> GUI" since I wasn't using a GUI.  So it didn't execute properly.  Curiously, 
> when I changed that option to WX GUI, and the FFT then worked, I went back 
> and replaced it with the null sync, and now strangely it works.  And now the 
> file sink works as well.  So there must be something in the generate options 
> that behaves differently in companion than in python.
>
> This seems to be an adequate workaround.  Is there anything inherently wrong 
> with setting GUI options when you're not using a GUI?
>
> Thanks,
> Scott

You shouldn't have to work around this, though. Sounds like something
small but funky going on in your system. But to your other question,
no, there's nothing wrong with using a GUI option with no GUI
components. It'll just pop up a small dialog box somewhere, though,
and that could be annoying. May also be a problem if trying to
remotely log in and run the app.

Tom