Set::setps: b[[1]] in assignment of part is not a symbol.

["Veltman, A.T." <veltman@XXXXXXX.nl>]

Sowwy, immer noch mit Mathematica 3.0,
hab aber folgendes Problem:

Folgendes functioniert:

In[1]:= a = Table[0, {2}]
Out[1]= {0,0}

In[2]:= a[[1]] = 1
Out[2]= 1

In[3]:= b = Table[0, {2}, {3}]
Out[3]= {{0, 0, 0}, {0, 0, 0}}

Aber wenn Ich versuche

In[4]:= b[[1]][[1]] = 2

sagt er (mathematica):

Set::setps: b[[1]] in assignment of part is not a symbol.
Out[4]= 2

und er verweigert sich das Element an zu passen:

In[5]:= b[[1]][[2]]
Out[5]= 0

Wie kann Ich doch, ohne viel Mühe, die Werte im Matrix b anpassen?

danke,

arie veltman




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*      Ir. A.T. Veltman
*      Energy research Centre of the Netherlands  ECN
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