On 30/11/2009 7:49 PM, Douglas M. Hultstrand wrote:
Hello,
I am trying to create subsets of grouped data (by area size), and use
the area size as part of the output name. The code below works for area
(xout) 1 and 50, the other files are given NA for an area.
A simple example:
xout <- c(1,5,10,25,50,100)
for(i in xout) { print(paste("Areal_Ppt_",xout[i],"sqmi.txt", sep="")) }
Your loop loops over the values in xout, so no need for xout[i]. You
should be using
for(i in seq_along(xout))
if you want the indices, or just use i instead of xout[i] in the paste.
Duncan Murdoch
[1] "Areal_Ppt_1sqmi.txt"
[1] "Areal_Ppt_50sqmi.txt"
[1] "Areal_Ppt_NAsqmi.txt"
[1] "Areal_Ppt_NAsqmi.txt"
[1] "Areal_Ppt_NAsqmi.txt"
[1] "Areal_Ppt_NAsqmi.txt"
The actual code and partial dataset are below.
Thanks for your help,
Doug
###############
### Real Code ###
###############
data2 <- read.table("GROUP.txt", header=T, sep=",")
xout <- c(1,5,10,25,50,100)
for(i in xout) {
name <- paste("Areal_Ppt_",xout[i],"sqmi.txt", sep="")
b.1 <- subset(data2, area == i)
write.table(b.1, file=name,quote=FALSE,row.names=FALSE, sep=",")
}
######################
### Dataset GROUP.txt ###
#######################
hr,area,avg_ppt
21,1,0
21,5,0.001
21,10,0.001
21,25,0.005
21,50,0.01
21,100,0.011
22,1,0.003
22,5,0.005
22,10,0.00824
22,25,0.04258
22,50,0.057
22,100,0.101
23,1,2.10328
23,5,2.02755
23,10,1.93808
23,25,1.78408
23,50,1.67407
23,100,1.568
24,1,3.20842
24,5,3.09228
24,10,2.95452
24,25,2.71661
24,50,2.54607
24,100,2.38108
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