[changeset] - improve clf() compatibility

[David Bateman]

David Bateman wrote:
> John W. Eaton wrote:
>> * The refreshdata demo does not seem to be working correctly for me.
>>   I'm seeing
>>
>>     octave:1> demo refreshdata
>>     refreshdata example 1:
>>      x = 0:0.1:10;
>>      y = sin (x);
>>      plot (x, y, "ydatasource", "y");
>>      for i = 1 : 100
>>        pause(0.1)
>>        y = sin (x + 0.1 * i);
>>        refreshdata();
>>      endfor
>>
>>     refreshdata example 1: failed
>>     `y' undefined near line 0 column 1octave:2> 
>
>
> Strange, run from the command line as
>
> x=0:0.1:10;y=sin(x); plot(x,y,"ydatasource","y"); for i = 1:100, 
> pause(0.1); y = sin(x + 0.1*x); refreshdata(); endfor
>
> it works fine.. Not sure yet what is going on here.
>
> D.

Ok, this is in fact obvious.. refreshdata by default evaluates its 
arguments in the "base" workspace and in a demo script it needs to do it 
in the "caller" workspace.. Patch attached and pushed to Savannah..

D.

-- 
David Bateman                                David.Bateman at motorola.com
Motorola Labs - Paris                        +33 1 69 35 48 04 (Ph) 
Parc Les Algorithmes, Commune de St Aubin    +33 6 72 01 06 33 (Mob) 
91193 Gif-Sur-Yvette FRANCE                  +33 1 69 35 77 01 (Fax) 

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