[R] How to represent certain values in a file as we want?

[David Winsemius]

On Mar 31, 2013, at 6:15 AM, Jonsson wrote:

> I have a raster file(1440*720 rows) contains values of 1 ,2 , and 3. when I
> plot the file , I got a map of three colors but I do not know which is
> which. How can I put those colors as as I want :
> 
>   1=red
>   2=blue
>   3=green
> code:
> 
> pvm <- file("C:\\User_sm-das.bin","rb")
> cor1<- readBin(pvm, numeric(), size=4,  n=1440*720, signed=TRUE)
> r <-raster(t(matrix((data=cor1), ncol=720, nrow=1440)))

Wouldn't this just be:

image(r, col=c("red", "blue", "green")[r])

> image(r)
> 

Nabble falsehoods deleted.

-- 

David Winsemius
Alameda, CA, USA