How do I able to see the output like a mathematical formula.
The attached notebook does not have the data for str. Include the full list in the assignment to str or Iconize it so it is available in the notebook.
Is there a reason for wanting to see a "mathematical formula" for the InterpolatingFunction? How do you intend to use the "mathematical formula"?
I attached the new notebook including str list.
There is no especial reason, only I want to learn and see it.
Thank you for your help.
Since the InterpolatingFunction uses Hermite polynomials you can use this method to convert it to a piecewise function.
Extract the InterpolatingFunction and use InterpolationToPiecewise from the above post.
if = skdUstr[[1, 1, 1]] // Head
Not sure if that is what you are looking for.