[R] How to extract folowing data?

[Ben Tupper]

On Jul 14, 2008, at 3:03 AM, Megh Dal wrote:

> Hi,
> following data is taken from http://www.economagic.com/em-cgi/ 
> data.exe/var/west-texas-crude-long. Problem with this data is when  
> you copy it from this site you would get something like that :
>
>  1946 063331.27
>  1946 079991.27
>  1946 087771.52
>  1946 096661.52
>
> They should be interpret in following way :
>
> 1946 063331.27 this means : on 1946, June price was 1.27. Can  
> anyone please suggest me the easiest way with R to get extracted  
> the entire series?
>
>


Hi,

You can extract the year, month and price with the following:

 > s = c("1946 063331.27", "1946 079991.27")
 > nc = nchar(s)
 > y = substr(s, 1,4)
 > m = substr(s, 6,7)
 > p = substr(s,nc-3,nc)
 > y
[1] "1946" "1946"
 > m
[1] "06" "07"
 > p
[1] "1.27" "1.27"

But you will want to pay attention to what happens when the price  
requires more digits.

Cheers,
Ben

P.S. Wow!  A 20% increase in the cost of oil in one month! Will  
wonders never cease?


Ben Tupper
PemaquidRiver at tidewater.net

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