[R] Replacing cretin value in a file

[Ken Hutchison]

Perhaps you are in the first circle of the R Inferno?
   Ken Hutchison



On May 13, 2012, at 9:31 AM, Berend Hasselman <bhh at xs4all.nl> wrote:

> 
> On 13-05-2012, at 15:08, Jonsson wrote:
> 
>> Dear All, 
>> 
>> I am trying to replace a value of 528.8933 to -9999 in my file 
>> 
>> t<- file("C:\\Users\\Amin\\Desktop\\1999n_Resample11.img", "rb") 
>> e=readBin(t, double(), size=4,n=720*360, signed=TRUE) 
>> e[e != -9999] <- e[e != -9999]*0.0099 + 477.65 -273.15  
>> 
>> This code given above would read a binary file . Then It would do some
>> clculations to  e.  That worked well. I opend the file again in order to
>> look at the results    and I found weird numbers ( 528.8933).
>> 
>> I then used this  line      >e[e == 528.8933] <- -9999            to replace
>> the value of 528.8933  by -9999. I got no errors but when I looked again at
>> the values, I found them as they were(528.8933 is still there) 
>> any idea on how to replace a value by another value?Thanks in advance
>> 
> 
> Please read the R FAQ section 7.31  "Why doesn't R think these numbers are equal?"
> 
> http://cran.r-project.org/faqs.html
> http://cran.r-project.org/doc/FAQ/R-FAQ.html
> 
> Berend
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.