Question

I am trying to read multiple binary (365)files and do some calculations then read to another folder. I faced 2 problems:

First: The code below gives me an error:

Warning message: closing unused connection 3 (C:\PHD\Climate Data\Out\Temperature_1.dat

setwd("C:\\PHD\\Climate Data\\Wind\\")
listfile<-dir()
for (i in c(1:365)) {
  conne <- file(`listfile[i], "rb")
  file<- readBin(conne, integer(), size=2,  n=360*720, signed=T)
  file<-file-273.15 #
  close(conne)
  to.write = file(paste("C:\\PHD\\Climate Data\\Out\\Temperature_",i,".dat",sep=""),"wb")
  writeBin(file, to.write)
  close(to.write) 
}

Second:
As my files are 16bit,size=2, I wanted to make sure that my output data have the same size. So I just added size=2 to writeBin(file, to.write, size=2) but this gave an error:

Error in writeBin(file, to.write, size = 2) :   size 2 is unknown on this machine.            

Any help on writing binary files properly is appreciated

Answer 1

Based on what I can see you are trying to writeBin() a vector of doubles forcing each element to be of size 2. That is not possible.

You may be able to as.integer(file) and try to write the resulting vector as elements of size=2 but you’ll have to try this.