[Octave-cvsupdate] SF.net SVN: octave:[6135] trunk/octave-forge/main/control/inst

[<par...@us...>]

Revision: 6135
          http://octave.svn.sourceforge.net/octave/?rev=6135&view=rev
Author:   paramaniac
Date:     2009-08-25 10:09:44 +0000 (Tue, 25 Aug 2009)

Log Message:
-----------
minor improvements for svplot and initial

Modified Paths:
--------------
    trunk/octave-forge/main/control/inst/initial.m
    trunk/octave-forge/main/control/inst/svplot.m

Modified: trunk/octave-forge/main/control/inst/initial.m
===================================================================
--- trunk/octave-forge/main/control/inst/initial.m	2009-08-24 21:05:03 UTC (rev 6134)
+++ trunk/octave-forge/main/control/inst/initial.m	2009-08-25 10:09:44 UTC (rev 6135)
@@ -185,6 +185,7 @@
     for k = 1 : n_out
       subplot (n_out, 1, k)
       plot (t, y(:, k))
+      grid on
       if (k == 1)
         title ("Response to Initial Conditions")
       endif

Modified: trunk/octave-forge/main/control/inst/svplot.m
===================================================================
--- trunk/octave-forge/main/control/inst/svplot.m	2009-08-24 21:05:03 UTC (rev 6134)
+++ trunk/octave-forge/main/control/inst/svplot.m	2009-08-25 10:09:44 UTC (rev 6135)
@@ -180,6 +180,10 @@
     sigma_min_db = 20 * log10 (sigma_min);
     sigma_max_db = 20 * log10 (sigma_max);
 
+    ## Determine axes
+    ax_vec = axis2dlim ([[w(:), sigma_min_db(:)]; [w(:), sigma_max_db(:)]]);
+    ax_vec(1:2) = [min(w), max(w)];
+
     ## Determine xlabel
     if (digital)
       xl_str = sprintf ('Frequency [rad/s]     Pi / T = %g', pi/t_sam);
@@ -189,6 +193,7 @@
 
     ## Plot results
     semilogx (w, sigma_min_db, 'b', w, sigma_max_db, 'b')
+    axis (ax_vec)
     title ('Singular Values')
     xlabel (xl_str)
     ylabel ('Singular Values [dB]')


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