Interpolation of Data

[mallows]

Hi,

I have a text file which looks (briefly) like the following:

x y
0 2391
2.1 2478
4.3 2871
6.2 3019

The actual file has the first column going up to about 55000 in the same increment.

Does anyone know a fortran program (or any program - say Matlab) that can take this input file and interpolate it to give an output file which has readings for y at, say, every x=10?

Grateful for any help you can offer!

Kind regards, mallows

 

[gummibaer]

HHmmmm,

you do not expect us to do your homework from PC classes, don't you ?

If not:

google 'interpolation fortran' and you will receive 616.000 links covering all kinds of interpolation routines, not only linear.

Norbert

 

[Predictor]

Yes, try the 'pchip' or 'spline' functions in MATLAB.