I'm a new learner of OpenMX and R , I want to use it to do simple SEM analysis, but I can't find the estimator information in OpenMxUserGuide. please tell me how can I find and how can I understand the estimator in OpenMx .
The current version of OpenMx implements maximum likelihood (either covariance or full information) as a default. Other objective functions are possible to specify using our mxAlgebraObjective. See, for instance, the post on WLS in this same forum.