From bug-octave-request at bevo dot che dot wisc dot edu  Mon Dec 18 22:24:58 2000
Subject: Small Documentation bug in 2.1.32
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Bill Lash <Bill dot Lash at tellabs dot com>
cc: bug-octave at bevo dot che dot wisc dot edu
Date: Mon, 18 Dec 2000 22:24:50 -0600

On 17-Dec-2000, Bill Lash <Bill dot Lash at tellabs dot com> wrote:

| [My first attempt to send this seems to have gotten lost 
|  along the way.  Sorry if you get this twice]

It was not automatically posted since you were not subscribed to the
bug-octave list, and I hadn't forwarded it yet.

| I finally got around to trying a more recent version of the
| 2.1.xx family, and found that a .oct file I had written (for
| 2.1.14) no longer compiled.  I looked at oregonator.cc and 
| noticed that the line which used to read:
| 
|         ColumnVector x = args(0).vector_value ();
| 
| now reads:
| 
|         ColumnVector x (args(0).vector_value ());
| 
| The file func.txi, however still includes the original
| version.  A patch for func.txi is included below.
| 
| Now all I need to do is figure out exactly what this new
| form is trying to say.  My C++ is rusty from lack of
| use.

It's saying that vector_value now returns an Array object, which has
no orientation, so you have to create a ColumnVector object using the
ColumnVector constructor.  You can also now use column_vector_value
or row_vector_value methods to extract ColumnVector or RowVector
objects, but then the Octave_value object must contain exactly what
you ask for.  Using vector_value allows the user of the function to
pass either a row or column vector, and things will still work out
fine.

jwe



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