1GR_PLOT_FFT(1)                   User Commands                  GR_PLOT_FFT(1)
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NAME

6       gr_plot_fft - Frequency domain GNU Radio plotting
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SYNOPSIS

9       gr_plot_fft: [options] input_filename
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DESCRIPTION

12       Takes  a GNU Radio complex binary file and displays the I&Q data versus
13       time as well as the frequency domain (FFT) plot. The y-axis values  are
14       plotted  assuming  volts  as  the amplitude of the I&Q streams and con‐
15       verted into dBm in the frequency domain (the 1/N power  adjustment  out
16       of  the  FFT is performed internally). The script plots a certain block
17       of data at a time, specified on the command line as -B or --block. This
18       value  defaults  to  1000. The start position in the file can be set by
19       specifying -s or --start and defaults to 0 (the start of the file).  By
20       default, the system assumes a sample rate of 1, so in time, each sample
21       is plotted versus the sample number. To set a true time  and  frequency
22       axis, set the sample rate (-R or --sample-rate) to the sample rate used
23       when capturing the samples.
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OPTIONS

26       -h, --help
27              show this help message and exit
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29       -d DATA_TYPE, --data-type=DATA_TYPE
30              Specify the data type (complex64, float32,  (u)int32,  (u)int16,
31              (u)int8) [default=complex64]
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33       -B BLOCK, --block=BLOCK
34              Specify the block size [default=1000]
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36       -s START, --start=START
37              Specify where to start in the file [default=0]
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39       -R SAMPLE_RATE, --sample-rate=SAMPLE_RATE
40              Set the sampler rate of the data [default=1.0]
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SEE ALSO

43       gr_plot_fft_c(1) gr_plot_fft_f(1)
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47gr_plot_fft 3.10.1.0              2022-05-13                    GR_PLOT_FFT(1)
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