Analytics: minor fixes to CS plugin

analytics/operators/cssignatures/CSOperator.cpp

@@ -82,7 +82,7 @@ void CSOperator::execOnInit() {
         _trainingUnit = _units[0]->getName();
         _actualBlocks = _units[0]->getInputs().size() < _numBlocks ? _units[0]->getInputs().size() : _numBlocks;
         if(_actualBlocks!=_numBlocks)
-            LOG(warning) << "Operator " << _name << ": cannot enforce " << _numBlocks << ", using " << _actualBlocks << " instead.";
+            LOG(warning) << "Operator " << _name << ": cannot enforce " << _numBlocks << " blocks, using " << _actualBlocks << " instead.";
     } else {
         _actualBlocks = _numBlocks;
     }
@@ -164,9 +164,9 @@ bool CSOperator::dumpToFile(std::string &path) {
     // Saving CS data in terms of permutation index, minimum and maximum for each input sensor
     for(size_t idx=0; idx<_permVector.size(); idx++) {
         boost::property_tree::ptree group;
-        group.push_back(boost::property_tree::ptree::value_type("idx", std::to_string(_permVector[idx])));
-        group.push_back(boost::property_tree::ptree::value_type("min", std::to_string(_min[idx])));
-        group.push_back(boost::property_tree::ptree::value_type("max", std::to_string(_max[idx])));
+        group.push_back(boost::property_tree::ptree::value_type("idx", boost::property_tree::ptree(std::to_string(_permVector[idx]))));
+        group.push_back(boost::property_tree::ptree::value_type("min", boost::property_tree::ptree(std::to_string(_min[idx]))));
+        group.push_back(boost::property_tree::ptree::value_type("max", boost::property_tree::ptree(std::to_string(_max[idx]))));
         blocks.add_child(std::to_string(idx), group);
     }
     root.add_child(std::to_string(_permVector.size()), blocks);
@@ -324,7 +324,7 @@ void CSOperator::computeMinMax(std::vector<std::vector<reading_t>>& v) {
             for (const auto &s : v[idx]) {
                 if (s.value > max)
                     max = s.value;
-                else if (s.value < min)
+                if (s.value < min)
                     min = s.value;
             }
         } else {