How to isolate "y" values from smoothed function?

[MaSu]

I am evaluating some measured data with noise. To smooth the data I have used the function "supsmooth". This worked well.

What I need now is to isolate an interval of x values (for example from 100 to 150 with step 0.1) and find y values for each x from the smoothed curve.

How can I get functional notation of the smoothed curve?

Any help is appreciated!

Attached is a ZIP file with data source file and mathcad worksheet with described situation.

[MikeArmstrong]

Something like the attached?

Just a quick one, always keep origin at 0 as most of the functions posted within this site are based on a ORIGIN value of zero.

Mike

[jeanGiraud]

MIke Armstrong wrote:

Something like the attached?

Just a quick one, always keep origin at 0 as most of the functions posted within this site are based on a ORIGIN value of zero.

Mike

Hard to tell if the case is smooth or fit !

[MikeArmstrong]

Worksheet re-attached in M11 format.

Mike

[MaSu]

Mike, it is exactly what I've ment. Thank you.