How to change Nan value with zero and return them again?

2 次查看（过去 30 天）
Ayob
Ayob 2014-1-24
评论： Amit 2014-1-24
I have a matrix like A which some of its members are NAN. I want to do some mathematical works on it, but I can not do it because of nan values. So I decided to change these nan values to zero and after finishing mathematical works return Nan to the same places( my matrix dimension doesn't change during the job.)
for example:
B=A.^(0.5) [it doesn't work because of nan values in A]
I should find nan values and replace them with zero to build a new A.
Now I use A.^0.5 with the A built in the last step for B=A.^2
I have B with the same dimension of A, I should return nan values to the same place of B which were replaced with zero in A.
How can I do it with Matlab features?
[I don't want to replace all zero values in B, I want to replace zero values in B which there were nan values in the similar position of A.] N

请先登录，再回答此问题。

采纳的回答

Amit
Amit 2014-1-24
Ind = find(isnan(A));
A(ind) = 0;
B = A.^0.5;
B(ind) = NaN;

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 NaNs 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by