what is the random effect of lmer can you use splines in lmer what is lmer used for can lmer use polygons why is it useful to use splines as random effects what is the use of splines in lmer why is it useful to use splines to control for trends lmer(counts) does random effects use a spline? lmer function used for random effects does lmer use splines in random effect model can lmer use splines can lmer use splines? can the lmer function use splines as random effects can you use splines for random effects if lmer use splines what can I use can lmer use splines lmer functions lmer function random effects can lmer use splines as random effect can you use a random spline