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From: | Murray Thomson |
Subject: | Re: [Discuss-gnuradio] filename in file source from GRC and automatic clear reports? |
Date: | Tue, 9 Jun 2015 13:05:14 +0100 |
Hi Jeon,
I think it's possible GRC looks for " in the field, so maybe
"" +str(var)
works?
Best regards,
Marcus
On 06/09/2015 09:43 AM, Jeon wrote:
Jeon.I've tried and seen that `str(var)` appears as it is. And I thought it didn't work. But according to your answer, it is converted to a string properly when py file was generated and executed. Is it right?Dear Marcus.Thanks for your answers.
And for clearing reports, your suggestion is to modify source code of GRC app itself. I'll try it later.
Again thank you for your kind answers
Regards,
2015-06-09 16:13 GMT+09:00 Marcus Müller <address@hidden>:
Hi Jeon,
the input fields just take "normal" python, so
"/my/file/path"+ str(time)
should just work; for more complex things, try python's (quite frankly awesome) string formatting language
"/home/marcus/{dir}/{date}-{hour:02d}-{minute:02d}-{seconds:02.6f}.dat".format(dir="/samples", date=20150609,hour=8,minute=59,seconds=25.33212324)
will give you
/home/marcus//samples/20150609-08-59-25.332123.dat
notice the length of each number and the padding with zero of the hour.
Possibly, GRC tries to figure out whether what you've entered into the text field is just text (and must be surrounded by " ) or python code, and goes wrong.
2. There's no setting I'd know of that would enable that; the only way I can find in the source code is View->Clear Reports, which triggers the CLEAR_REPORT GRC Action; if you feel like it, you could add a "clear reports on flow graph launch" checkbox there and modify the Action that happens when you click on "run" to include conditional clearing of the reports.
Greetings,
Marcus
On 06/09/2015 06:08 AM, Jeon wrote:
After I define a variable `time` with a value of `20150609`. I want to use a file `/my/file/path/sample20150609` as a file source.It's not a critical issue.1. How could I put filename which contains variables?
In `file` field (filename) in file source block, how can I refer such a variable? I put variable name in the field, but it seems the GRC regards it as a string literal.
2. Every time before I run the GRC flow graph, I want to clear the reports (console log).
I think it is possible if I put something in `.grc` file in the home directory. But, I have no idea about that `something`.
Regards,
Jeon.
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