Analytics: minor fixes

- Suppressing an integer comparison warning

analytics/operators/clustering/ClusteringOperator.cpp

@@ -180,7 +180,7 @@ std::string ClusteringOperator::printMeans() {
     if(_gmm.empty() || !_gmm->isTrained())
         out << "Model is uninitialized or not trained.\n";
     else {
-        for(size_t idx=0; idx<_gmm->getMeans().size().height; idx++)
+        for(size_t idx=0; idx<(size_t)_gmm->getMeans().size().height; idx++)
             out << "Component " << idx << " :" << _gmm->getMeans().row(idx) << "\n";
     }
     return out.str();