[R] how to specify uncorrelated random effects in nlme::lme()

[王震]

Dear professor,


I'm using package nlme, but I can't find a way to specify two uncorrelated random effects. For example, a random intercept and a random slope. In package lme4, we can specify x + (x ll g) to realize, but how in nlme?


Thanks!








 ————————————————————————
 Zhen Wang
 Graduate student, Department of Medical Statistics, School of Public Health, Sun Yat-sen University
E-mail: wangzh597 using mail2.sysu.edu.cn
王震
中山大学公共卫生学院医学统计学系2022级硕士研究生
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