>>>>> "ChRi" == Ritter, Christian C MCIL-CTGAS <[EMAIL PROTECTED]>
>>>>>     on Wed, 13 Aug 2003 11:49:03 +0200 writes:

    ChRi> This might be easy (but I didn't find an answer in the archives).
    ChRi> I'm trying to make nice looking images (using image()). 

    ChRi> To make them look nice (not jagged), it usually takes
    ChRi> me at least 100x100 points. This can be slow for
    ChRi> frequent redraws.

and also for (postscript) printing.
For true image data, it would be nice to have "true pixel-map"
graphics as part of the basic graphic engine, but I'm not really
competent here


    ChRi> Is there a smarter (less point intensive) way? 

    ChRi> I was thinking in terms of hexabins, for example,
    ChRi> which for much less jagged looking regions, or of an
    ChRi> option to image ( or a variation) which internally
    ChRi> increases the grid.

    ChRi> Any help welcome. Thanks in advance.

There's the "hexbin" package from Bioconductor for hexagonal bin
plots -- which really does help for some of the problems you mention.

Martin Maechler <[EMAIL PROTECTED]>     http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum  LEO C16    Leonhardstr. 27
ETH (Federal Inst. Technology)  8092 Zurich     SWITZERLAND
phone: x-41-1-632-3408          fax: ...-1228                   <><

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