gr_plot_fft_f(1)
plot complex binary data using GNU Radio
SYNOPSIS
gr_plot_fft_f:
[options] input_filename
DESCRIPTION
Takes a GNU Radio complex binary file and displays the I&Q data versus time as
well as the frequency domain (FFT) plot. The y-axis values are plotted
assuming volts as the amplitude of the I&Q streams and converted into dBm in
the frequency domain (the 1/N power adjustment out of the FFT is performed
internally). The script plots a certain block of data at a time, specified on
the command line as -B or --block. This value defaults to 1000. The start
position in the file can be set by specifying -s or --start and defaults to 0
(the start of the file). By default, the system assumes a sample rate of 1, so
in time, each sample is plotted versus the sample number. To set a true time
and frequency axis, set the sample rate (-R or --sample-rate) to the sample
rate used when capturing the samples.
OPTIONS
- -h, --help
-
show this help message and exit
- -B BLOCK, --block=BLOCK
-
Specify the block size [default=1000]
- -s START, --start=START
-
Specify where to start in the file [default=0]
- -R SAMPLE_RATE, --sample-rate=SAMPLE_RATE
-
Set the sampler rate of the data [default=1.0]