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How to convert Nan to zero

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Abdulaziz
Abdulaziz 2013-8-25
评论： Walter Roberson 2021-12-24
Hi guys; Please I need urgent help
I have matrix of experiment data in excel file, this excel matrix has some blank cells The problem is that the blank element shows as NaN when import the matrix to matlab for processing. Is there any function or .. to convert the Nan to zero
I appreciate your help.

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采纳的回答

Laurent
Laurent 2013-8-25
To set all NaN in Q to zero:
Q(isnan(Q))=0;
Is that what you need?
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更多回答（2 个）

Hernan Larriva
Hernan Larriva 2019-7-30
Great, Thank you from Barcelona
Santosh Shakya
Santosh Shakya 2021-12-24
i want to replace nan with 0 in an array
can you help me?
  1 个评论
Walter Roberson
Walter Roberson 2021-12-24
Ran in:
a = rand(5,5)
a = 5×5
0.9293 0.2265 0.4353 0.6769 0.2335 0.7836 0.5917 0.3524 0.9278 0.9782 0.3526 0.6221 0.5509 0.6242 0.4922 0.8690 0.6174 0.6444 0.7184 0.1279 0.6544 0.5207 0.1999 0.3623 0.0036
a([2, 7, 23]) = nan
a = 5×5
0.9293 0.2265 0.4353 0.6769 0.2335 NaN NaN 0.3524 0.9278 0.9782 0.3526 0.6221 0.5509 0.6242 NaN 0.8690 0.6174 0.6444 0.7184 0.1279 0.6544 0.5207 0.1999 0.3623 0.0036
b = fillmissing(a, 'constant', 0)
b = 5×5
0.9293 0.2265 0.4353 0.6769 0.2335 0 0 0.3524 0.9278 0.9782 0.3526 0.6221 0.5509 0.6242 0 0.8690 0.6174 0.6444 0.7184 0.1279 0.6544 0.5207 0.1999 0.3623 0.0036
%OR
c = a; c(isnan(c)) = 0
c = 5×5
0.9293 0.2265 0.4353 0.6769 0.2335 0 0 0.3524 0.9278 0.9782 0.3526 0.6221 0.5509 0.6242 0 0.8690 0.6174 0.6444 0.7184 0.1279 0.6544 0.5207 0.1999 0.3623 0.0036

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