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3072
2008 Feb 25
1
Plotting series marked with a symbol on every nth data point, preferably in ggplot...
...ere are so many symbols, that they overplot and
the whole plot is unreadable once again. I am looking for advice on
how to make a plot with continuous lines and symbols appearing at
every nth point. An example of this problem and a solution in SAS can
be found here:
www2.sas.com/proceedings/sugi26/p072-26.pdf
The obvious solution would be to extract the n-th point from the
dataset and overplot as a new line with symbols, but this does not
change the legend, does it? How can I then have a line+symbol in the
legend represent my curve?
Now, ideally I would prefer a solution in ggplot, because of t...