I am trying to plot a simple heatmap of some data distribution in R.

My data = matrix (5000 x3( Time , Complexity, Localisation )).

Time ( 0- 7000) 
Cmplx (0-4) 
Localisation (1-15).

i.e

Time    Cmplx      Localisation 
567      3             1
54       0             2
345      3             12 
567      4             12
345      2             9
989      4             7
...     ...           ...

The idea is to plot the Time in relation to each Cmplx and each Localisation (Something like accumarray in mathlab)

Have someone an idea?

Thanks in advance,

Guillon_