[R] ggplot2 help/suggestions needed

[Bruce Rex]

Hello,

I have written a version of the Kohenen Self Organizing Map (in R) and wish
to use ggplot2 for the visualization. My results are RGB values in a matrix
[x,y,1:3] where x and y comprise the first two dimensions and the third
dimension is the RGB vector.

I am not sure whether to use geom_tile or geom_hex as there really is no
binning at the finest granularity. For testing, the matrix is 100, 100, 3 in
size. What approach would you suggest?

TIA,
DrX