Automatic polynomial approximation

[Daniel Tourde]

Hello,

I have a question concerning a polynomial approximation of a function
within a given interval.

I use the function polyfit to approximate a function by a polynom. To
take the best approximation, I plot the function and it's approximation.
If the approximation is not good enough, I simply change BY HAND the
degree of approximation. I would like to automatize this process and not
to bother about the best approximation but to be sure that Octave has
chosen the best one by default. How could I do ?

Thanks in advance

                        Daniel Tourde
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Daniel TOURDE                                   E-mail : address@hidden
The Aeronautical Research Institute of Sweden   Tel : +46 8 634 13 44
P.O. Box 11021 S-161 11 BROMMA, Sweden          Fax : +46 8  25 34 81
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