Re: Creating Symbolic Matrix in Octave

[Neil Ghosh]

On Sat, Oct 23, 2010 at 11:21 PM, Doug Stewart <address@hidden> wrote:

2010/10/23 Neil Ghosh <address@hidden>:

> Yes , I have seen the function list
>
> http://octave.sourceforge.net/symbolic/function/sym.html
>
> But this does not have the usage how to use as function , I think it takes
> only one argument unlike matlab
>
> Any other resource ?
>
>
> 2010/10/23 Jordi Gutiérrez Hermoso <address@hidden>
>>
>> On 23 October 2010 10:46, Neil Ghosh <address@hidden> wrote:
>> > Also what is correct alternative to matlab function ?
>> >
>> > X=[sym(x1); sym(x2)];
>>
>> You might try the symbolic package from the 'Forge:
>>
>>     http://octave.sourceforge.net/symbolic/index.html
>>
>> But I don't know how well it's maintained.
>>
>> - Jordi G. H.
>
>
>
> --
> Thanks and Regards
> Neil
> http://neilghosh.com
>
>
>
>

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See:

http://wiki.octave.org/wiki.pl?CategorySymbolic

http://octave.1599824.n4.nabble.com/determinent-of-undefined-matrix-td1621169.html

The short answer is Use Maxima.
Doug

I could not find the answer in above link , it still the same problem 

octave-3.2.4.exe:139> x1 = sym('x1');
octave-3.2.4.exe:140> x2 = sym('x2');
octave-3.2.4.exe:141> X_t=[x1,x2];

error: octave_base_value::resize (): wrong type argument `ex'
error: octave_base_value::resize (): wrong type argument `<unknown type>'

What do you mean by "Use Maxima" ?
-- 
Thanks and Regards
Neil
http://neilghosh.com