DATA:      B. Post (unpublished)
DIRECTORY: \CANOCO\SAMPLES\PERMUTIO\PLOUGH
PROBLEM:   Effect of ploughing time on weeds
ILLUSTRATION OF:
+ analysis of a randomized block experiment
+ preparation of a data file that defines the design of the experiment
+ definition of permutation groups (blocks)
+ unrestricted permutation within blocks
+ mimicking blocks by a split-plot design
_______________________________________________________________________________
FILE TYPE    |  FILE NAME    |         DESCRIPTION
-------------+---------------+-------------------------------------------------
 SPECIES     | weeds83.dta   | 13 weeds in 12 plots of a randomized block 
             |               |  experiment
ENVIRONMENT  | factors.dta   | blocks and treatments coded by factor levels
             | bloctime.dta  | 7 dummy variables indicating block and treatment
             | design.dta    | as bloctime.dta, but in condensed format
 PROJECTS    | plough.con    | test of the effect of the treatment 
             |               |  (ploughing time) on the weeds by permutation 
             |               |  within blocks
             | mimicblc.con  | as plough.con without the usage of the block
             |               |  indicator variables
-------------+---------------+-------------------------------------------------