Having built a working gnuradio with rtlsdr stuff from github sources,
I've now made a proof-of-concept change to the QT Number Sink to change
the precision to two decimal places. One-line change patch file
attached. I am at a loss to add a "precision" parameter to the GRC form
so this patch
Well, good news on one front. I just built gnuradio from github on a
fresh Linux Mint 18.3 install and the osmocom/rtlsdr stuff seems to work
fine. So whatever problem was there has now been cleaned up. Thanks to
whoever was responsible for that!
Now on to patching QT Number sink...
John
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I must now reflect and ponder to wisely choose my path. All options suck.
I'd actually like most to go back to the build-gnuradio script but I
haven't been able to verify that the issue I had last summer was
addressed -- I don't know what broke or where, but with changes to
librtlsdr around t
Indeed, I was misjudging the syntax of QString.arg(double, int);
the second thing is just a minimal width to be filled up with spaces.
The optional precision argument is never specified, so Qt just does
whatever the hell it feels like. Splendid functionality.
Regarding moving things out-of-tree: I
Thanks, Marcus!
First, there's something goofy because I am getting 6 decimal places,
not 4. See the attached screen shot.
Second, unfortunately at the moment I'm using the Ubuntu packages. I
used to always use the build-gnuradio script, but last summer I started
having problems with librt
Hi John,
there's no dumb questions, maybe badly researched ones, and you
definitely don't have the habit of posting the latter, so: Good
question!
It all boils down to this line in gnuradio/gr-
qtgui/lib/numberdisplayform.cc:
d_text_box[i]->setText(QString("%1 %2").arg(f, 4, ' ').\
io@gnu.org
제목: Re: [Discuss-gnuradio] Rounding values in QT Number
I don't remember if the QT sink has this, but I seem to recall that some GUI
sinks have "formatters" which are basically the same as the python formatter
concept.
On Mon, Mar 5, 2018 at 4:41 PM John Ackermann N
I don't remember if the QT sink has this, but I seem to recall that some
GUI sinks have "formatters" which are basically the same as the python
formatter concept.
On Mon, Mar 5, 2018 at 4:41 PM John Ackermann N8UR wrote:
> I hate to put such a dumb question to the list, but I'm going nuts
> tryi
I hate to put such a dumb question to the list, but I'm going nuts
trying to do something that ought to be simple.
I am using a QT Number Sink to display dB values in float format. It is
showing many more decimal places than have any meaning. I'd like to
round the display to one or two decim
