I wonder if there is a way/package that provides a means to overlay plots (I am thinking of a scatter plot generated by geom_point) in a way similar to overlaying channels in ImageJ.
I would like to check if the two points are overlapped. Visually, a red pixel and green pixel overlay will turn yellow if done in ImageJ. However, the closest I can get to getting a similar result is to set the alpha of the point in geom_point. However, the color is not exactly yellow.
Therefore, I would like to know if there is a way I can produce a similar plot in R.
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written
by
cwwong13 •
1 answer
Can you show an example of your data? The big difference is that for channel overlay, the underlying datagrid is the same:
x y v
1 1 0.1
1 2 0.1
.. .. ..
1 n 0.0
2 1 0.1
2 2 0.2
.. .. ..
k n 0.0
so you could conceviably combine with paste0('#', as.hexmode(255*ch1$v), as.hexmode(255*ch2$v), as.hexmode(255*ch3$v)).
However if you have a bona-fide scatter plot (x and y not aligned) then you'll need to approximate v(x,y) using some kind of interpolation.
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