From bug-octave-request at bevo dot che dot wisc dot edu  Tue Apr  4 15:09:57 2000
Subject: Re: Bug? Size of empty matrix changes
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: etienne at isr dot isr dot ist dot utl dot pt
Cc: bug-octave at bevo dot che dot wisc dot edu, etienne@isr.ist.utl.pt
Date: Tue, 4 Apr 2000 15:09:47 -0500 (CDT)

On  4-Apr-2000, etienne grossmann <etienne at anonimo dot isr dot ist dot utl dot pt> wrote:

| From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
| #  On  3-Apr-2000, etienne grossmann <etienne at anonimo dot isr dot ist dot utl dot pt> wrote:
| #
| #  |   is it normal that the size of 'a' changes, in the example below?
| #  | 
| #  | octave:136> a=zeros(0,6); for i=1:6, a(:,i)=[], end;
| #  | a = [](0x5)
| #  | a = [](0x4)
| #  | a = [](0x3)
| #  | a = [](0x3)
| #  | a = [](0x3)
| #  | a = [](0x3)
| #
| #  Yes.  Assignment of an empty matrix deletes elements.
| 
|   Is that intentional? 

Yes.  Read the section on assignment expressions in the manual.

jwe



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