[R] Cannot scale my map

[Mihalis Tsoukalos]

Dear list,

I have the following problem:

I want to plot my data and display a map at the same graph. The  
problem is that my map is not properly sized (is very small). It  
appears at the bottom-left side of the output.
I am using the following R commands:

{
plot(Time, col="lightgrey")
title("Connections per Minute")
map("world", fill=TRUE, lwd=0.25, col="green", add=TRUE)
box()
}

Please note that Time contains data in the following format:
00:00
00:01
...
22:04, etc.

Can you please help me?

many thanks in advance,
Mihalis.

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