...
Location in Source: Tools » Plugins Contributor Contributor
Basic operation
Select and run the constituent of interest (functional units cannot be chosen yet). The map provides a graphical representation of the amount of the constituents that have contributed to the terminal (or outlet) node in the network (Figure 1). You can select another point in the system by clicking on the link above the desired node on the map. The results are automatically recalculated and may be standardised for catchment areas by clicking the Standardise for area checkbox at the bottom left of the plugin window.
...