Standard Errors for Contrasts among Model Terms - Generic Function

DESCRIPTION:

Returns the standard error of a specified contrast, or matrix of contrasts.

This function is an S Version 3 generic (see Methods); method functions can be written to handle specific S Version 3 classes of data. Classes which already have methods for this function include:
aov , aovlist

USAGE:

se.contrast(x, contrast.obj, ...) 

REQUIRED ARGUMENTS:

x
a model object
contrast.obj
a structure specifying the contrasts. See specific methods for details.

VALUE:

a matrix of standard errors corresponding to the contrasts.

SEE ALSO:

, .

EXAMPLES:

gun.aov <- aov(Rounds ~ Method + Physique/Team, gun) 
se.contrast(gun.aov, list(Method=="M1", Method=="M2"), data=gun)