Histograms: default breaks
Peter Dalgaard BSA
p.dalgaard@biostat.ku.dk
22 Sep 1998 16:13:09 +0200
hist() uses pretty() to set its default breaks. For integer data, this
isn't really desirable, although it is Splus compatible, because all
the values fall at one end of each bar. Wouldn't it be better with
breaks <- pretty(x)
adj <- diff(breaks[1:2])/2
breaks <- pretty(x+adj) - adj
- or something like that? There's a slightly sticky issue involving
the possibility that pretty(x+adj) will have a different interval than
pretty(x), though.
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk) FAX: (+45) 35327907
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