How to eliminate Repeated NaNs in a array?

I have two vectors X, and Y; both will have NaNs present in them.

If X has a NaN, Y will have a NaN as well at the same location.

I would like to squeeze repepated NaNs to just one NaN.

For e.g. if X = [1,2.3, NaN, NaN, NaN, 2, 1].. then

X should be replaced by X=[1,2,3,NaN,2,1] and

Y also should reflect the same.

How would I achieve it?

Answer 1

[Adam Danz]

% Demo data
x = [1:5 nan nan nan nan nan nan, 7:10, nan, 12, nan, 13:15, nan nan nan 19 ]; 

keepIdx = ~isnan(x);                          % keep all non-nans  
keepIdx(logical([1,diff(~keepIdx)])) = true;  % keep first of consecutive nans

x = x(keepIdx); % remove unwanted values from x
y = y(keepIdx); % remove unwanted values from y

[Pappu Murthy]

Thanks for helping me out. It woked exactly the way i wanted.

[Adam Danz]

Glad I could help!