R does not recognise columns and rows as they are supposed to be
Is the file format documented?
If not you can search for a possible format if you know the values
at the start of the file. For one of your files, show the results of the following:
file <- "your filename here"
for(what in c("double", "integer")) {
for(size in c(4, 8)) {
for(endian in c("little", "big")) {
cat(sep="", what, "/", size, "/", endian, ":\n ");
print(readBin(file, what=what, size=size, endian=endian, n=6))
}
}
}
Do any of them look ok? If not you may want to loop over possible
offsets in the file by opening a connection, reading from 1 to 7 one-byte
integers, and then reading the data of interest.
Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
-----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Jonsson Sent: Thursday, May 24, 2012 11:41 PM To: r-help at r-project.org Subject: Re: [R] R does not recognise columns and rows as they are supposed to be Yes I exactly followed what you all suggested: X<-(82:92) ; Y<-(364:369) ##### for sellected region
extract <- double(365)
setwd("C:\\Users\\aalyaari\\Desktop\\New folder (10)\\")
listfile<-dir()
for (i in 1:365) {
+ conne <- file(listfile[i], "rb")
+ file1<- readBin(conne, double(), n=360*720)
+ file2<-matrix(data=file1,ncol=720,nrow=360)
+ extract[i]<-mean(file2[X,Y],na.rm=TRUE)
+ close(conne) }
write.table(extract,"C:\\Users\\aalyaari\\Desktop\\New folder
(10)\\samregion1.txt")
But I am still getting(negative values) all values like:
-3.75E+306
-1.30E+54
-1.22E+58
and the right ones should be like:
22.25
22.76
33.25
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