C:\Rmisc>C:\R-2.9.0\bin\Rterm --vanilla 

R version 2.9.0 (2009-04-17)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> pdf("oehemp4_3.pdf")
> 
> 
> leaflet <- matrix(c(
+                 1,              140,
+                 1,              138,
+                 1,              140,
+                 1,              138,
+                 1,              142,
+                 2,              140,
+                 2,              150,
+                 2,              120,
+                 2,              128,
+                 2,              130,
+                 3,              118,
+                 3,              130,
+                 3,              128,
+                 3,              118,
+                 3,              118), ncol=2, byrow=T)
> 
> 
> angle <- leaflet[,2]
> delay <- leaflet[,1]
> delayf <- C(factor(delay),contr=contr.poly,scores=sort(unique(delay)))
> 
> delay
 [1] 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3
> angle
 [1] 140 138 140 138 142 140 150 120 128 130 118 130 128 118 118
> delayf
 [1] 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3
attr(,"contrasts")
             .L         .Q
1 -7.071068e-01  0.4082483
2 -9.073264e-17 -0.8164966
3  7.071068e-01  0.4082483
Levels: 1 2 3
> 
> tapply(angle, delayf, mean)
    1     2     3 
139.6 133.6 122.4 
> tapply(angle, delayf, sd)
       1        2        3 
 1.67332 11.61034  6.06630 
> 
> contr.poly(3)
                .L         .Q
[1,] -7.071068e-01  0.4082483
[2,] -9.073264e-17 -0.8164966
[3,]  7.071068e-01  0.4082483
> 
> angle.aov <- aov(angle ~ delayf)
> 
> summary(angle.aov, split=list(delayf=list(linear=1,quadratic=2)))
                    Df Sum Sq Mean Sq F value   Pr(>F)   
delayf               2 762.13  381.07  6.5550 0.011912 * 
  delayf: linear     1 739.60  739.60 12.7225 0.003875 **
  delayf: quadratic  1  22.53   22.53  0.3876 0.545205   
Residuals           12 697.60   58.13                    
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 
> 
> 
> angle2.aov <- aov(angle ~ delay + I(delay^2))
> 
> summary(angle2.aov)
            Df Sum Sq Mean Sq F value   Pr(>F)   
delay        1 739.60  739.60 12.7225 0.003875 **
I(delay^2)   1  22.53   22.53  0.3876 0.545205   
Residuals   12 697.60   58.13                    
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 
> 
> 
> dev.off()
null device 
          1 
>