Clear Filters
Clear Filters

interpolation in a vector

2 views (last 30 days)
Hinna Ahmed
Hinna Ahmed on 5 Feb 2020
Answered: Jyothis Gireesh on 11 Feb 2020
I have a vector like this:
v = [1 24 56 87 98 45 67 89 34 56]
and my time axis;
t = [1 2 3 4 5 6 7 8 9 10]
If a want to interpolate the value at time point t=9, how can I do that?
Thanks in advance
Adam on 5 Feb 2020
Edited: Adam on 5 Feb 2020
Interpolated based on what? Linear interpolation?
t(9) = mean( t( [8 10] ) );
would do that.
Sindar on 5 Feb 2020

Sign in to comment.

Accepted Answer

Jyothis Gireesh
Jyothis Gireesh on 11 Feb 2020
I am assuming here that you want to replace the sample corresponding to t=9 using linear interpolation. The following line of code may be helpful in solving this.
newValue = interp1([1:8 10], [v(1:8) v(10)], 9);
It is also possible to change the interpolation technique by specifying it as an additional input argument. For instance, if ‘pchip’
technique is to be used,
newValue = interp1([1:8 10], [v(1:8) v(10)], 9, 'pchip');
Please refer to the following documentation link on “interp1()” for any further clarifications
Hope this helps!!

More Answers (0)


Find more on Interpolation in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!