Patch to hist for changes in bar

[John W. Eaton]

On 25-Apr-2007, David Bateman wrote:

| As bar can now return the figure handle, hist should be slightly
| changes. See the attached patch
| 
| D.
| Index: scripts/plot/hist.m
| ===================================================================
| RCS file: /usr/local/cvsroot/octave/scripts/plot/hist.m,v
| retrieving revision 1.32
| diff -u -r1.32 hist.m
| --- scripts/plot/hist.m       10 Oct 2006 16:10:28 -0000      1.32
| +++ scripts/plot/hist.m       25 Apr 2007 19:00:47 -0000
| @@ -118,7 +118,7 @@
|      freq = freq / rows (y) * norm;
|    endif
|  
| -  if (nargout > 0)
| +  if (nargout > 1)
|      if (arg_is_vector)
|        nn = freq';
|        xx = x';
| @@ -127,7 +127,7 @@
|        xx = x;
|      endif
|    else
| -    bar (x, freq);
| +    nn = bar (x, freq, 1.0);
|    endif
|  
|  endfunction

What is the extra 1.0 argument to bar for?  It causes an error for me.

Matlab's hist doesn't return anything if nargout == 0.

jwe