NAME

       gr_plot_fft - Frequency domain GNU Radio plotting

SYNOPSIS

       gr_plot_fft: [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

       -d DATA_TYPE, --data-type=DATA_TYPE
              Specify the data type (complex64, float32, (u)int32, (u)int16, (u)int8) [default=complex64]

       -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]

SEE ALSO

       gr_plot_fft_c(1) gr_plot_fft_f(1)