OptionalbinsHistogram bin count; Sturges' rule when absent.
OptionalclashSaved clash report in the viewer's saved-content library (#6947).
Only valid for clash. Absent means the current clash result, which is
what every chart saved before this field existed reads. Dashboard and
document files keep this ID; the saved report is a local dependency and
is not embedded into the chart specification.
OptionalcomparisonCompleted comparison in the viewer's canonical saved history (#6549).
Only valid for compare. Absent preserves the legacy live comparison.
Dashboard/document files retain this ID; the matching saved history is
a local dependency and is not embedded into the chart specification.
OptionaldimensionOptionalelementIFC field used for grouping, materialized beside the built-in element columns.
OptionalfilterNarrows this chart's rows to those touching the matched elements, on top of the dashboard scope.
OptionalmeasureNumeric IFC field to sum independently of the grouping field.
OptionalsortBucket order; default value (largest first). label sorts by label, dates chronologically.
OptionalstackSecond category column for stackedBar: one series per distinct value.
OptionaltopKeep the first N buckets and fold the rest into one Other bucket.
elementCountshows one total over the (optionally filtered/sliced) source and never buckets by a column, so it carries nodimensionat all — not even an empty string (#5151).