Split a vector where NaN appears

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Marc Cowan
Marc Cowan 2021-4-5
编辑： dpb 2021-4-5
I have many m*3 vectors, and for some of them, they are say, between rows p and q, (which are different for each vector) a number of NaN values in the first column. In these instances, I wish to split them into two vectors, one which contains all rows up to p, and one which contains all rows after q.
To clarify, all the NaN values appear between rows p and q, and there are no values which I wish to keep within these rows.

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dpb
dpb 2021-4-5
编辑：dpb 2021-4-5
>> x=randn(10,1);x([4 7])=nan
x =
0.5080
0.2820
0.0335
NaN
1.1275
0.3502
NaN
0.0229
-0.2620
-1.7502
>> [pq]=[find(isnan(x),1)-1 find(isnan(x),1,'last')+1]
pq =
3 8
>>

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