Octave objects

[Jeremy Kepner]

Hi John,
   thanks, got through this error.  Any ideas
on where these errors might be hiding?

error: octave_char_matrix_str::valid_as_scalar_index(): not implemented
error: assignment failed, or no method for `scalar = scalar'
error: evaluating assignment expression near line 59, column 57
error: evaluating if command near line 58, column 11
error: evaluating for command near line 57, column 9
error: evaluating for command near line 56, column 1
error: evaluating if command near line 46, column 1
error: called from `reconstruct' in file `/home/gridsan/kepner/SVN/ 
pMatlab/trunk/pMatlab/src/reconstruct.m'
error: evaluating assignment expression near line 38, column 5
error: evaluating if command near line 23, column 5
error: evaluating if command near line 22, column 1
error: called from `agg' in file `/home/gridsan/kepner/SVN/pMatlab/ 
trunk/pMatlab/src/@dmat/agg.m'
error: evaluating assignment expression near line 78, column 8
error: called from `pStream' in file `/home/gridsan/kepner/ 
KepnerBookCode/Examples/Stream/pStream.m'


Thanks.  Regards.  -Jeremy

On Nov 10, 2008, at 6:31 PM, John W. Eaton wrote:

> On  6-Nov-2008, Jeremy Kepner wrote:
>
> | Hi John,
> |    I am testing version 3.1.51 octave.
> | When I run  the attached program I get the
> | following error having to do with objects
> | in octave:
> |
> |  >> pStream
> | warning: version: ignoring extra arguments
> | error: `argn' undefined near line 0 column 10
> | error: evaluating argument list element number 1
> | error: evaluating assignment expression near line 35, column 5
> | error: called from `inputname' in file `/usr/local/octave-3.1.51/
> | share/octave/3.1.51/m/miscellaneous/inputname.m'
> | error: evaluating argument list element number 2
> | error: called from `subsasgn' in file `/home/gridsan/kepner/pMatlab/
> | src/@dmat/subsasgn.m'
> | error: assignment failed, or no method for `class = matrix'
> | error: evaluating assignment expression near line 0, column 9
> | error: evaluating if command near line 84, column 1
> | error: called from `zeros' in file `/home/gridsan/kepner/pMatlab/ 
> src/
> | @map/zeros.m'
> | error: evaluating argument list element number 1
> | error: evaluating binary operator `+' near line 68, column 39
> | error: evaluating assignment expression near line 68, column 10
> | error: called from `pStream' in file `/home/gridsan/kepner/
> | KepnerBookCode/Examples/Stream/pStream.m'
>
> I don't see "inputname" anywhere in the code you sent, but as I recall
> from the from testing pMatlab you need the following change:
>
>  * assignin.diff: There is a bug in Octave that prevents the
>
>      assignin('caller', inputname(1), []);
>
>    statement from working.  Since this call to assignin is an attempt
>    at optimizing memory usage and does not affect the results, it
>    seems simplest to comment this line out.
>
> diff -ru pMatlab.orig/src/@dmat/subsasgn.m pMatlab/src/@dmat/ 
> subsasgn.m
> --- pMatlab.orig/src/@dmat/subsasgn.m	2005-03-07 15:07:08.000000000  
> -0500
> +++ pMatlab/src/@dmat/subsasgn.m	2008-07-22 11:52:40.000000000 -0400
> @@ -12,7 +12,7 @@
>
> % Instead of creating a copy of a, write directly to the memory
> % allocated for a in the caller's workspace
> -assignin('caller', inputname(1), []);
> +%assignin('caller', inputname(1), []);
>
> if length(s)==1 %subscripting level
>     if s.type == '()' %subscripting type -> parenthesis
>
>
>
> jwe
>