hi ,everyone,

I have a script shown as below:

> bj2=bjerrdata$tyerr[bjyearnum[2]+1:bjyearnum[3]]
> length(bj2)
[1] 448

while

> b=bjyearnum[3]
> a=bjyearnum[2]+1
> bj1=bjerrdata$tyerr[a:b]
> length(bj1)
[1] 169


it is different with bj2 and bj1 . and the array  bjyearnum is
 [1]    0  279  448  633 1021 1365 1813 2237 2839 3314 3798 4157   12

why bj1 is 169 while bj2 is 448 ?

how to let bj2 is also array with the length 169 ?

thank you .
--


TANG Jie
Email: totangjie@gmail.com
Tel: 0086-2154896104
Shanghai Typhoon Institute,China

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