Spacing and margins in plot
"Earl F. Glynn" <efg at stowers-institute.org> writes:
AFAIK, the only way to get the axis label "closer" to the axis is to suppress the actual axis labels and use the mtext command to display alternative text where you want it. For example, look at the blue text in Figure 2B (at the above link) that is between the axis label and the axis. This blue text is at line=2, when the axis labels are at line=3.
how about plot(..., xlab="") title(xlab="label text", line=2) ?