R help - Sep 2011 - Package lattice: levelplot for matrix method produces images with blank lines ...

Dear R-users,

I am trying to produce a levelplot of a matrix of values (430x430) using
"levelplot" from lattice package. My problem is that I am not able to
obtain an image without blank/white lines in some rows and columns (a continuous
image). Attached are two png files (different resolution) showing the problem.

Is it possible to obtain "continuous images" as with the
'formula' method? I am not able to understand where is the point, and I
would like to use "levelplot" (instead of filled.contour) because I
can choose where to position the colorkey-map.


Thank you very much in advance,
kind regards,

Pedro.



PS:Of course, I 've read the help page and searched in the mail archives but
... no hint.
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