Suppose you have a 2d matrix M. And you have certain indexes where the data is not good.SO you want to fill those indexes by the nearest existing value.Can regionfill be used for this

M=magic(10)

index=[7,8,,5,9,45,43,23,34]

M(index)=nan

Now how to fill up those Nan values such that it contains the nearest existing value

AND

 second average of nearest existing values

Answer 1

[Sebastian Castro]

You can use fillmissing: https://www.mathworks.com/help/matlab/ref/fillmissing.html

>> x = [7,8,NaN,5,9,45,43,23,34,NaN,NaN,100]
x =
   7     8   NaN     5     9    45    43    23    34   NaN   NaN   100

>> fillmissing(x,'nearest')
ans =
   7     8     5     5     9    45    43    23    34    34   100   100

>> fillmissing(x,'linear')
ans =
  7.0000    8.0000    6.5000    5.0000    9.0000   45.0000   43.0000   23.0000   34.0000   56.0000   78.0000  100.0000

- Sebastian