Open Foris Calc is a modular browser-based tool for data analysis and results calculation. It allows expert users to write custom R modules to perform country/inventory-specific calculations. Calc produces results for forest inventories based on point sampling designed with a variety of sampling designs: single or double sampling, cluster, random, systematic and stratified sampling. Aggregated results can be visualized and analyzed through an open source software: Saiku.
The input data and metadata come from Open Foris Collect and Calc provides a flexible way to produce aggregated results for any defined area of interest. The hierarchical structure defined in Collect is converted into a relational database: the entities are converted into tables and their attributes into columns.
CALC has three main sections: Settings, Data and Calculation.
- In Settings the user can upload and manage an existing survey as well as any other information necessary for producing meaningful calculations such as areas of interest, sampling design specifications, aggregation formulas and models.
- Data is the area of Calc where data can be displayed (in tabular or scatter plot format). Raw data can be sorted, filtered and managed as needed, including upload and download of data sub-sets.
- Calculation, the core of Calc, allows to set up calculation steps in order to analyze the data set and produce results which will be managed and displayed in symbiosis with Saiku
In order to familiarize with CALC and understanding the components and its full potential, a test data-set is available for download. [click below]