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
[[alternative HTML version deleted]]