On 29.06.2013 22:55, Adam wrote:
> On 29.06.2013 21:19, Raymond Toy wrote:
>> On 6/29/13 11:55 AM, Rupert Swarbrick wrote:
>>> Adam <adammaj1 at o2.pl> writes:
>>>> At the end it should be :
>>>>
>>>> I can do it using linear function , but then curve is not smooth. I
>>>> would like to use nonlinear function.
>>> I don't know whether Maxima has functions for smooth curve
>>> fitting. Maybe other respondents can help you there. Hopefully the
>>> following general pointers will be of some use to you:
>>
>> There's at least lbfgs and minpack_lsquares (and some Lagrange
>> polynomial routine whose name I forget) to fit curves to data.
> I have tried package interpol and cspline function
>
>> But I
>> think you'll have to remove the non-existent data from your data list
>> yourself before using these routines.
>
> OK, but when I remove this points then curve has a sharp bend
I will change the form of the array.
Tt should contain index and the number. Then I can remove negative
points and use cspline
Adam