Unwanted thick centerlines by default in R-graph function

Question

When I make a graph in R, it always turns out with a thicker axis along the numbered part of the surrounding field. This is a nuisance, since I always have to turn off the axes in the plot () and then redraw them with zero thickness. I noticed that the computers of other employees do not seem to have this problem, which makes me wonder where this problem came from.

Section 1 generates my unwanted thick axes, graph 2 works as a solution:

x<-c(1:10)
y<-c(1:10)
# Plot 1
plot(x,y, main="Plot 1")
# Plot 2
plot(x, y, xaxt='n', yaxt='n', main="Plot 2")
axis(1, lwd=0, lwd.ticks=1)
axis(2, lwd=0, lwd.ticks=1)

I am running RStudio 0.98.501 on Mac OSX 10.9.4

Any ideas at the root of the error are greatly appreciated. Thank.

Answer 1

, - :

plot = function(x, y, ...){
    plot(x, y, xaxt='n', yaxt='n')
    axis(1, lwd=0, lwd.ticks=1)
    axis(2, lwd=0, lwd.ticks=1)
}