[R] Changing pch spacing

[Wolfgang Viechtbauer]

Hello R-Helpers,

plot(x, y, type="b", pch="1")

plots x vs. y with both a line and the symbol "1" but how do I change
the "spacing" of the symbol being plotted. In other words, I don't want
to plot the "1" at every data point, but only at every kth point (things
get too cluttered when there are many data points). Thanks in advance!

--
Wolfgang Viechtbauer

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