[R] lattice : superpose symbols with a great many points

[David Winsemius]

On Jun 20, 2014, at 12:45 PM, Laurent Rhelp wrote:

> Hi,
> 
>  I like to use with xyplot (package lattice) the groups argument and superpose.symbol to compare several curves. But, when there are a great many points, the symbols are very close and the graph becomes unreadable. Would there be an argument  or a tip not to draw all the symbols, for example the symbols could be drawn only every x points, x given as an argument ?

If decreasing the size of the points is not effective, then you it may be more informative to use densityplot.
> 

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David Winsemius
Alameda, CA, USA