VisualN provides an interface to check “how it works” for any available drawer on the site. To see the list of drawers go to VisualN -> Available Drawers Preview menu item.
Available drawers list
Though VisualN allows you to use any resource type as data source (e.g. csv, xls files or views), for demo purposes it is enough to have some dummy data. Such data can be obtained from data generators. Data generators are simple plugins returning an array of data (which is just another resource type) of a given structure that can be used by certain drawers (e.g. Leaflet uses lat, lon and title data fields).
Data generators may also provide info about drawer or drawers that can use generated data. Those drawers and data generators are considered compatible. Drawers highlighted green have compatible data generators.
There are a couple of use cases when you may want to use the Available drawers preview UI:
check drawer in action, examine configuration form settings
set configuration values to create a visualization style
use the preview UI to help drawer development and to test changes
check data format used by drawers (e.g. using table drawer)
Source: New feed