I am experiencing some difficulty using the VarCorr function with a nlme object from a nonlinear mixed effects model analysis. Is VarCorr even available for such an analysis? Any insights would be welcomed. Best, Jeff
**************************************************************************** Jeffrey R. Harring, Assistant Professor Department of Measurement, Statistics& Evaluation (EDMS) 1230 Benjamin Building University of Maryland College Park, MD 20742-1115 Phone: 301.405.3630 Fax: 301.314.9245 Email: harring at umd.edu Web: http://www.education.umd.edu/EDMS/fac/Harring/webpage.html