?? plot
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clf;subplot(2,1,1);set(semilogx(f, mag), 'LineWidth', 2);holda = axis;set(semilogx([fpm fpm], [0 a(3)], 'r--'), 'LineWidth', 2);if ~isempty(igm) set(semilogx([fgm fgm], [mag(igm) a(3)], 'r--'), 'LineWidth', 2); set(semilogx([f(1) fgm], [mag(igm) mag(igm)], 'r--'), 'LineWidth', 2);endgrid;ylabel('Gain (dB)');subplot(2,1,2);set(semilogx(f, ph), 'LineWidth', 2);holda = axis;axis([a(1) a(2) a(3) 0]);set(semilogx([f(1) fpm], [ph(ipm) ph(ipm)], 'r--'), 'LineWidth', 2);set(semilogx([fpm fpm], [ph(ipm) 0], 'r--'), 'LineWidth', 2);if ~isempty(igm) set(semilogx([fgm fgm], [ph(igm) 0], 'r--'), 'LineWidth', 2);endgrid;ylabel('Phase (dB)');xlabel('Frequency (Hz)');?? 快捷鍵說明
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