ZoomCharts Documentation

Object structure

The facet chart consists of Facet objects and Item objects. A stack of fact objects is maintained and only topmost item is usually being rendered.. Each facet contains array of items, each individual item represents a single entry in the chart.

The following read-only fields are available. All other fields in the objects are considered internal and subject to change. Each object also has a collection of style fields you can assign to, described in the style section.

Facet fields

• id - facet id
• data[] - pie data as received from data source
• items - array of currently visible items
• parentItem - item in facet up in stack that was drilled down into
• activeItemId - drilled down item id - for background facets only
• offset - offset in data for visible items
• count - number of visible items

Item fields

• id - item id
• facet - owner facet object
• innerFacet - drilled down facet object - if the item item is expanded
• index - index in the data array
• data - item data as received from data source
• values[] - array of ItemValue objects representing individual values. Each array item corresponds to item in settings.series array.
• expandable - if clicking on the item will expand it, true or false
• selected - if is selected, true or false
• active - if is under the cursor, true or false

ItemValue fields

• value - actual value derived form data

Api methods

The following chart API methods return chart objects:

• chart.getActiveFacets() - returns array of facet objects representing stack of all drilled down facets. Last being the topmost.
• chart.getActiveFacet() - returns active facet.
• chart.getActiveItems() - returns array of currently visible items for active facet.