[R] Blank eps output files

[Sundar Dorai-Raj]

Sivakumar Mohandass wrote:

> Dear all,
> 
> The following commands results in a blank graph file,
> 
> postscript(file = "C:/Temp/Fig1.eps", height=4.0, width=4.0, 
> horizontal = FALSE, onefile = FALSE, paper = "special")
> 
> x11(height=3,width=3)
> par(mar=.1+c(4.5,4.5,0,0))
> 
> x <- c(10,20,30)
> y <- c(5, 7, 9)
> plot (x,y)
> dev.off()
> 

Your code above opens 2 devices (1=postscript, 2=x11) and only writes to 
the second. Thus nothing is ever written to nor do you ever close the 
first device. I think what you want is:

postscript(file = "C:/Temp/Fig1.eps", height=4.0, width=4.0,
            horizontal = FALSE, onefile = FALSE, paper = "special")
par(mar=.1+c(4.5,4.5,0,0))
x <- c(10,20,30)
y <- c(5, 7, 9)
plot (x,y)
dev.off()

The fact that you never closed the first device explains why you 
couldn't view it outside of R.

--sundar


> The codes function normally without any error in the command window.
> However, the resulting files (I tried .eps, .emf and .jpeg) are all too
> small in size (< 5 mb). The .jpeg file which one can normally preview in a
> Windows OS, says it's not available for preview when double clicked upon. 
> 
> I am using R version 2.0.0. Are there any changes to the coding in this
> version? Does anyone know how to fix this?
> 
> Thank you in advance,
> Shiva