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

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MSP
MSP 2017-7-18
回答： Sebastian Castro 2017-7-18
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

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Sebastian Castro
Sebastian Castro 2017-7-18
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

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