Name

gainplot — magnitude plot

Calling Sequence

gainplot(sl,fmin,fmax [,step] [,comments] )
gainplot(frq,db,phi [,comments])
gainplot(frq, repf [,comments])

Parameters

sl

list (syslin SIMO linear system).

fmin,fmax

real scalars (frequency interval).

step

real (discretization step (logarithmic scale))

comments

string

frq

matrix (row by row frequencies)

db,phi

matrices (magnitudes and phases corresponding to frq)

repf

complex matrix. One row for each frequency response.

Description

Same as Bode but plots only the magnitude.

Examples

 
s=poly(0,'s')
h=syslin('c',(s^2+2*0.9*10*s+100)/(s^2+2*0.3*10.1*s+102.01))
gainplot(h,0.01,100,'(s^2+2*0.9*10*s+100)/(s^2+2*0.3*10.1*s+102.01)')
clf()
h1=h*syslin('c',(s^2+2*0.1*15.1*s+228.01)/(s^2+2*0.9*15*s+225))
gainplot([h1;h],0.01,100,['h1';'h'])

See Also

bode , black , nyquist , freq , repfreq , g_margin , p_margin