Add interpolated data at a specific location in the main array.

2 views (last 30 days)
Hello,
I am working with an array which has a size of 603x1. However, there is data that is missing at two locations in the array. I have used the interp1 function to determine missing data and have it stored in a matrix. The location where the data is missing has 25 and 14 interpolated points respectively. I want to add the interpolated data into the main array at the specific locations, which are between the elements 28 and 29, and 186 and 187 respectively, such that the new array has a size of 642x1. I have attached the two variables with this question for reference. How can this be done?
Kind regards,
Harjot

Answers (2)

KALYAN ACHARJYA
KALYAN ACHARJYA on 21 Nov 2020
Edited: KALYAN ACHARJYA on 21 Nov 2020
This way?
array_new=[array_data(1:28),int_data,array_data(29:end)]
  1 Comment
Harjot Singh Saluja
Harjot Singh Saluja on 21 Nov 2020
Thank you for your input.
This will work. But how can I make it a general purpose thing? For example, instead of two locations, what if there is missing data for three/four locations?

Sign in to comment.


Andrei Bobrov
Andrei Bobrov on 21 Nov 2020
a =tlv_lis_alt;
input = interpol_alt;
idx = [29;187];
k = numel(a);
b = ones(k,1);
[m,n] = size(input);
lo = ~isnan(input);
ct = sum(lo);
b(idx) = ct + 1;
out = nan(sum([k;ct(:)]),1);
out(cumsum(b)) = a;
out(isnan(out)) = input(lo);

Categories

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!