Re: 2 Y-axes in the same figure

[Eduardo J. Adam]

Great solution.

clear all, clf

K=1; n=K; d=[1 0.2 1 0];

gs=tf(n,d);

[mag_gs,pha_gs,w]=bode(gs);

mag_gs_db=20*log(mag_gs);

h = plotyy(w,mag_gs_db,w,pha_gs);

set (h, 'xscale', 'log'); grid

But, (always there is a but),
1. I have the following message,

>>>warning: create_set is obsolete and will be removed from a future version of Octave, please use unique instead

And,
2.  Why I don't have a semilogx grid. Please, compera the x-axis in the original figure with this figure. I don't have the tipical division of semilog diagram

2011/10/18 Michael Goffioul <address@hidden>

On Tue, Oct 18, 2011 at 8:34 PM, Eduardo J. Adam <address@hidden> wrote:
> Wowww.
> But It is almost the solution. Look, it is a semilogx with 2 Y-axes.

Something like this should do it:

h = plotyy(...);
set (h, 'xscale', 'log');

Michael.

-- 

Dr. Eduardo J. Adam
Prof. Adjunto Instrumentación y Control de Procesos
Facultad de Ingeniería Química
Santiago del Estero 2654, (S3000AOJ), Santa Fe, SF, Argentina
Tel. +54 (0342) 457-1167 Int. 2742
http://www.fiq.unl.edu.ar/control/index.php?page=adam