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 2017-7-18

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https://ww2.mathworks.cn/matlabcentral/answers/349301-suppose-you-have-a-2d-matrix-m-and-you-have-certain-indexes-where-the-data-is-not-good-so-you-want

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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Answer 1

Sebastian Castro 2017-7-18

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/349301-suppose-you-have-a-2d-matrix-m-and-you-have-certain-indexes-where-the-data-is-not-good-so-you-want#answer_274686

在 MATLAB Online 中打开

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