Problem with prediction
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Problem with prediction



I am trying to follow the example on p. 88 of the ASREML manual(version of 2
October 1998).   

I have created a file with five levels for group and 12 unique values in X,
presented in test.dat below.   I have analysed this with the command file
presented in test.as below.   I have then produced predicted values using
the file presented in test.pin below.   I have then tried to produce a plot
of splines in Splus using the command

asr.pvsplot("c:\\docs\\dracup_m\\96wh14\\test.pvs",1,5,12)

This produces some output - i.e. it finds the file okay - but the lines
zigzag all over the place.   What am I doing wrong?

Nick Galwey
____________________

test.dat

group   X       y
       1      12    5.11
       1      13    5.45
       1      15    6.08
       1      16    6.32
       1      18    6.97
       1      19    7.29
       1      21    7.87
       1      24    8.78
       1      25    9.08
       1      26    9.40
       1      27    9.61
       1      29   10.24
       2      12   10.24
       2      13   10.85
       2      15   12.03
       2      16   12.66
       2      18   13.90
       2      19   14.50
       2      21   15.61
       2      24   17.44
       2      25   18.07
       2      26   18.65
       2      27   19.29
       2      29   20.41
       3      12   15.39
       3      13   16.26
       3      15   18.09
       3      16   18.95
       3      18   20.76
       3      19   21.62
       3      21   23.47
       3      24   26.19
       3      25   27.04
       3      26   27.92
       3      27   28.89
       3      29   30.68
       4      12   20.42
       4      13   21.70
       4      15   24.09
       4      16   25.21
       4      18   27.68
       4      19   28.86
       4      21   31.30
       4      24   34.86
       4      25   36.01
       4      26   37.21
       4      27   38.48
       4      29   40.89
       5      12   25.53
       5      13   27.09
       5      15   30.09
       5      16   31.60
       5      18   34.56
       5      19   36.00
       5      21   39.02
       5      24   43.60
       5      25   45.05
       5      26   46.56
       5      27   48.01
       5      29   51.07

test.as

Example - Manual page 88
 group     5
 X
 y

C:\DOCS\Dracup_M\96WH14\test.dat !skip 1

y ~ mu group group.X !r spl(X) group.spl(X)


test.pin

# A is the vector of the 12 knot points
# B is the vector of the average predicted spline
C = C+B # Add average curve to Group 1 specific curve
D = D+B # Add average curve to Group 2 specific curve
E = E+B # Add average curve to Group 3 specific curve
F = F+B # Add average curve to Group 4 specific curve
G = G+B # Add average curve to Group 5 specific curve
GROUP B6 [ 1:5 ] A6 [6:10 ] 11  # Group means at knot point 6
GROUP1 C   1     A   6      11  # Spline for group 1
GROUP2 D   2     A   7      11  # Spline for group 2
GROUP3 E   3     A   8      11  # Spline for group 3
GROUP4 F   4     A   9      11  # Spline for group 4
GROUP5 G   5     A  10      11  # Spline for group 5
_____________________________________________________________________
N.W. Galwey,
Faculty of Agriculture,
University of Western Australia,
Nedlands, WA 6709, Australia.

Tel.: +61 9 380 1959 (direct line)
      +61 9 380 2554 (switchboard)
Fax:  +61 9 380 1108