Merging 2 scatter plots or add data points to an existing scatter plot

[l.r...@gmx.us]

Hi,

I have a simple ggplot:
p1<-ggplot(datared, aes(x=axes1, y=axes2) ) + geom_point( size = 2, aes(color = group))

and another plot that contain the means of the groups

p2<-ggplot(dataredMeans, aes(x=meanaxes1, y= meanaxes 2)) + geom_point(shape = 4, size = 6,   aes(color = group)) + theme(legend.position="none")

How can I merge these plots or how can I add to p1 the p2 external points (dataredMeans) which are marked as X with bigger size?

Thanks a lot.

[Doug Mitarotonda]

Hi,

You would just need to use the `data` argument of the geom to add the second layer.

So something like:

p1<-ggplot(datared, aes(x=axes1, y=axes2) ) + geom_point( size = 2, aes(color = group)) + theme(legend.position="none")

p2 <- p1 + geom_point(data = dataredMeans, shape = 4, size = 6, mapping = aes(x=meanaxes1, y= meanaxes2, color = group))

Best wishes,

Doug

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