Re: parsing system call output

[Carlo de Falco]

On 27 Aug 2009, at 21:58, Derek Tsui wrote:

> Hi, does anyone know of a function or way to parse the output  
> returned from a system call? I am using system to query mysql db.
>
> Example
> [status, output] = system ("mysql -u root -N -e 'SELECT * FROM t' ");
>
> disp(output) would return something like
> 0       10      1021    5       11      1       1
> 0       10      1021    5       15      1       1
> 0       10      1021    5       16      1       1
>
> But if I do size(output) it is [1 x] , one dimensional.
>
> I am trying to parse output and put the values into a matrix. Could  
> anyone help?

the output of system is a string, if it reprsents a matrix of numbers  
like in the example above you can convert it
by simply doing

[status, output] = system ("mysql -u root -N -e 'SELECT * FROM t' ");
output = str2num (output);

> Thanks,
> Derek
c.