how to do spline without spline

hello i need to do that the function spline do to a data without using this function someone can help me

Answer 1

[Voss]

From the spline documentation page: "You also can perform spline interpolation using the interp1 function with the command interp1(x,y,xq,'spline')."

There you have it: you can do spline interpolation without calling the spline function by calling the interp1 function with the 'spline' option.

[Lior Genfon]

no i need to do a leniear interpolotion without commond that do it

i need to write the code

[Stephen23]

"i need to write the code"

What did you try so far?

[Lior Genfon]

i dont know were to start

i need to compare a spline commond to a code that i will write but i dont know were to start

[Stephen23]

"i dont know were to start"

You should start by deciding if you need to do spline interpolation or linear interpolation, because so far you have written both. Do you know the difference? Do you know what interpolation is?

So, what does your homework actually ask you to do?

[lior genfon]

i need to do the linear interpolation

my home work ask me to record me walking with matlab sensors

then do with the data spline interpolation

and to do a linear interpolation and compare them

then i need to up my sample rate to 500Hz from 50 Hz without using the build in commond like resample

the do fft and colculate the staps that i made

[Stephen23]

You can find plenty of tutorials online that explain how linear and spline interpolation works.

Have you read any? What material are you allowed to use for your homework?