[R] levelplot blocks size

[jonathan]

Thanks for your advice, but my data is not decimals, so I don't need to round
the values. Instead, what I need to really do is "group" the values into
larger "blocks".

My data looks sort of like this:

x    y     z 
0    0    687 
0    1    64 
0    2    71 
0    3    55 
0    4    52 
0    5    51 
0    6    38 
0    7    38 
0    8    54 
0    9    49 
......... 
......... 
......... 
987   988    1
999   998    1
999   999    1


But what I need to do is make it so that on the graph rather than having
tiny little dots for each point (as shown in the bigplot diagram), there are
bigger points, so say 0<=x<10, 0<=y<10 is one point in the lower left,
rather than having 100 points for each x,y value.

The same strategy should then be applied to the whole graph.

Any ideas how to achieve this? I'm sure this is quite a common thing to do
want to with heatmaps??

Thanks,

Jonathan

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