Hi, how can I get the first row elapsed time as zero please, for eg, if I have a 42x6 date vector column, I get only 41 x 1 column of time differences.

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Aswas
Aswas 2015-9-26
评论： Star Strider 2015-9-27
My code : e = etime(t2, t1)

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Star Strider
Star Strider 2015-9-26
编辑：Star Strider 2015-9-26
The etime function subtracts two date vectors, producing a single value (elapsed time in seconds). To get 0 as the first entry in the output, either duplicate the first entry in your date vector array, or simply concatenate a zero onto it:
e = [0; etime(t2, t1)]

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