Multiple bode plots fail on same figure

[Anon5710]

Hi,

It an easy to reproduce bug.
Here's an example.

********************
clear all;
[a1,b1] = butter( 7, [25, 41], 's');
[a2,b2] = butter( 7, [49, 81], 's');
bandpass_1 = tf( a1, b1);
bandpass_2 = tf( a2, b2);
figure(1);
clf;
bode( bandpass_1 )
hold on;
bode( bandpass_2 ) 
********************

The resulting figure has the phase plot of both system functions. But it
only shows the magnitude plot of the last one to given. (in this case
bandpass_2)

Are there any solutions to this?

I am using GNU Octave, version 3.0.1
Compiled from source on my gentoo system. (I have instaled the various
octave-forge-* packages.)


Greetings ANon5710
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