From bug-octave-request at bevo dot che dot wisc dot edu  Tue Aug  1 11:04:46 2000
Subject: mesh*.m complex argument vectors
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Rolf Fabian <fabian at tu-cottbus dot de>
Cc: "'bug-octave UWISC'" <bug-octave at bevo dot che dot wisc dot edu>
Date: Tue, 1 Aug 2000 11:05:18 -0500 (CDT)

On  1-Aug-2000, Rolf Fabian <fabian at tu-cottbus dot de> wrote:

| The help part of 'scripts/plot/meshgrid.m' says:
|   ## The rows of  at var{xx} are copies of @var{x},
|   ## and the columns of  at var{yy} are copies of @var{y}.
| Depending on orientation, this is incorrect if complex
| x,y vectors are involved, namely if x is column type, 
| or/and y is row type. Then erraneously complex conjugated
| copies are returned!
| 
| e.g.
| :> [X,Y]=meshgrid([i;2i],[3i,4i])
| X =
|   0 - 1i  0 - 2i
|   0 - 1i  0 - 2i
| Y =
|   0 - 3i  0 - 3i
|   0 - 4i  0 - 4i
| 
| ( I've no idea what Matlab does in this case )
| 
| Note, that analogous incorrect features appears in all mesh*.m scripts,
| i.e. also in 'meshdom.m' and 'mesh.m'.

I fixed this problem in my sources.

In the future, can you please send patches made with diff -u or diff -c?

Thanks,

jwe



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