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Function Reference: bodemag

Function File: bodemag (sys)
Function File: bodemag (sys1, sys2, …, sysN)
Function File: bodemag (sys1, sys2, …, sysN, w)
Function File: bodemag (sys1, ’style1’, …, sysN, ’styleN’)
Function File: [mag, w] = bodemag (sys)
Function File: [mag, w] = bodemag (sys, w)

Bode magnitude diagram of frequency response. If no output arguments are given, the response is printed on the screen.

Inputs

sys
LTI system. Must be a single-input and single-output (SISO) system.
w
Optional vector of frequency values. If w is not specified, it is calculated by the zeros and poles of the system. Alternatively, the cell {wmin, wmax} specifies a frequency range, where wmin and wmax denote minimum and maximum frequencies in rad/s.
’style’
Line style and color, e.g. ’r’ for a solid red line or ’-.k’ for a dash-dotted black line. See help plot for details.

Outputs

mag
Vector of magnitude. Has length of frequency vector w.
w
Vector of frequency values used.

See also: bode, nichols, nyquist, sigma

Source Code: bodemag 

 s = tf('s');
 G = s*(1 + 0.5*s)/(s^2 + 0.2*s + 1)/(1+10*s);
 bodemag(G);
plotted figure