Hi all,
I use ireadLines function to iterate large '.csv' files from '.zip' file.
When I execute the nextElem function in R console, I can only fetch the first
line of file content no matter how many times . Example code show as bellow.
> library(iterators)
> con<-unz(description='g:\\hourly_WIND_2013.zip',filename='hourly_WIND_2013.csv')
>
> it<-ireadLines(con)
> nextElem(it)
[1] "\"State Code\",\"County Code\",\"Site Num\",\"Parameter
Code\",\"POC\",\"Latitude\",\"Longitude\",\"Datum\",\"Parameter Name\",\"Date
Local\",\"Time Local\",\"Date GMT\",\"Time GMT\",\"Sample Measurement\",\"Units
of Measure\",\"MDL\",\"Uncertainty\",\"Qualifier\",\"Method Type\",\"Method
Name\",\"State Name\",\"County Name\",\"Date of Last Change\""
> nextElem(it)
[1] "\"State Code\",\"County Code\",\"Site Num\",\"Parameter
Code\",\"POC\",\"Latitude\",\"Longitude\",\"Datum\",\"Parameter Name\",\"Date
Local\",\"Time Local\",\"Date GMT\",\"Time GMT\",\"Sample Measurement\",\"Units
of Measure\",\"MDL\",\"Uncertainty\",\"Qualifier\",\"Method Type\",\"Method
Name\",\"State Name\",\"County Name\",\"Date of Last Change\""
>
Can anybody tell me what did i missed?
Regards
Jianwen Luo
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