scatterplot of 100000 points and pdf file format

(Ted Harding) <Ted.Harding at nessie.mcc.ac.uk> writes:

I want to look into this a bit more systematically (I have
an idea why 'unique' may be taking longer on the array from
'cbind' than on the dataframe),

Just look inside the functions. One is pasting columns together, the
other is using a paste() construct inside an apply() function. So with
two columns by 1e6 rows, one is doing one large paste and the other a
million small ones.

O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907