Gnuplot: line 0: no previous plot
Gnuplot: line 0: no previous plot Question: I am trying to save the Gnuplot plot in PNG that I get with my SDR and a tool named rtl_power_fftw. This command displays my plot on the screen but I want to save it in PNG: rtl_power_fftw -f 900M:950M -n 10 -b 512 -q | sed -u …
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