[R] Adjusting for within-cluster correlation: robcov() in Design-package and 'ids' in survey-package

[Bernd Weiss]

Dear all,

I would like to know if it possible to use the the robcov()-command in the Design-
package in order to obtain a robust variance-estimate that adjusts for within-cluster 
correlation. Does the ids-option in the survey-package the same job? 

TIA,

Bernd