Re: [R] maintaining specified factor contrasts when subsetting in lmer

2007-07-07 Thread Afshartous, David
I'm familiar w/ relevel but that doesn't seem to help here (e.g., tried setting the reference level to 3 but the second model w/ the subset argument doesn't seem to estimate the desired model). Possibly another contrasts statement needs to be provided prior to the second model, this time w/ a

[R] maintaining specified factor contrasts when subsetting in lmer

2007-07-06 Thread Afshartous, David
All, I'm using lmer for some repeated measures data and have specified the contrasts for a time factor such that say time 3 is the base. This works fine. However, when I next use the subset argument to remove the last two time values, the output indicates that the specified contrast is not

Re: [R] maintaining specified factor contrasts when subsetting in lmer

2007-07-06 Thread Francisco J. Zagmutt
See ?relevel Regards, Francisco Afshartous, David wrote: All, I'm using lmer for some repeated measures data and have specified the contrasts for a time factor such that say time 3 is the base. This works fine. However, when I next use the subset argument to remove the last two