Re: [Discuss-gnuradio] filename in file source from GRC and automatic clear reports?

[Marcus Müller]

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:

It's not a critical issue.

1. How could I put filename which contains variables?

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.

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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