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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 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

show this help message and exit
Specify the data type (complex64, float32, (u)int32, (u)int16, (u)int8) [default=complex64]
Specify the block size [default=1000]
Specify where to start in the file [default=0]
Set the sampler rate of the data [default=1.0]

SEE ALSO

gr_plot_fft_c(1) gr_plot_fft_f(1)

2022-12-14 gr_plot_fft 3.10.5.0-rc1