spline derivative

Andras · Post by **Andras** » Mon Mar 10, 2008 6:21 am

Dear Support

The spline smoothing feature of TChart AX is very powerful. My question: is it possible to access the derivate (dy/dx) of the spline? This would be a very useful feature in some numerical applications. If this is not available in the current ActiveX, could you implement it in future, upcoming versions? As splines are analytic, I guess this could be done easily with some little extra programming work.

Tx in advance, best regards

Andras

Narcís · Post by **Narcís** » Wed Mar 12, 2008 9:21 am

Hi Andras,

I'm afraid this is not possible at the moment. I have added your request to our wish-list to be considered for inclusion in future releases. Keep in mind that splines are "glued" together as piece-wise polynomials so the derivative will depend on spline type (b-spline, cubic spline, ...).