2D interpolation - how to deal with "missing" data
15 views (last 30 days)
Show older comments
Hello!
I have a matrix with missing numbers. There are some rows and columns missing; these I can find by interpolating with interp2. However, there are also some gaps, i.e. "missing" data, in my matrix that can not be retrieved by the same method. These empty entries are automatically set to 0 (zero) when I import my data to Matlab, and are subsequently treated as such instead of treated as gaps which need to be "filled" when I try to use interp2.
I could do a 1D interpolation at each row, column, and/or diagonal where there are gaps, but I am afraid that this would give me less good results (as I only take two out of eight neighbours into account) and that it will take me a lot of time.
Is there any easy way to perform an interpolation to fill the gaps?
Any help would be much appreciated!
Thank you
/Tomas
1 Comment
nancy gupta
on 2 Feb 2014
how you processed interpolation diagonally? Actually I am stuck with it.
Thank You
Accepted Answer
More Answers (1)
Walter Roberson
on 18 Dec 2011
Perhaps John's File Exchange contribution inpaint_nan would work for you.
See Also
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!