To simplify complex data processing with Matlab, a dedicated framework was developed. It provides common data processing algorithms in an object- oriented way. Figure 10 shows a cutout of the class diagram. The MainCtrl initializes the framework (instantiates required objects – Datapoint’s, Statis- ticCtrl, etc.) and keeps track of the database connec- tion. A set of Objects (StatisticCtrl, PlotCtrl, Data- pointCtrl, Datapoint, ZoneCtrl, etc.) provide various methods to simplify data analysis. The figure shows a sample psychrometric chart generated with the method plotMollierOfZone(). Due to the open- source nature of the framework, functionality can be easily enhanced or adopted to respective needs.