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GR_PLOT_FFT(1) User Commands GR_PLOT_FFT(1) 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 per- formed 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 num- ber. 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) gr_plot_fft 3.10.12.0 2026-08-04 GR_PLOT_FFT(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO
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