FunnelChart#

Best for stage-by-stage drop-off — a signup or checkout funnel, a hiring pipeline, a support queue.

FunnelChart(    data = {        listOf(            FunnelStage(label = "Visited",  value = 10_000f),            FunnelStage(label = "Signed up", value = 4_200f),            FunnelStage(label = "Activated", value = 1_800f),            FunnelStage(label = "Paid",      value = 640f),        )    },    modifier = Modifier.fillMaxWidth().height(320.dp),    funnelConfig = FunnelChartConfig(showConversionLabels = true),    onStageClick = { stage -> println("${stage.label}: ${stage.value}") },)

Each band's width is value / firstValue, tapering from its own width to the next stage's; the last band is a rectangle. A stage may carry its own color, otherwise stageColors is cycled.

Nothing else in Charty tapers width across stages — BlockBarChart splits one constant-thickness bar into proportional segments, and PieChart divides angle.

Orientation#

funnelConfig = FunnelChartConfig(orientation = FunnelOrientation.HORIZONTAL)

Vertical is the default, the shape readers expect. Horizontal is a config flag, not a second composable.

Conversion labels#

funnelConfig = FunnelChartConfig(    showConversionLabels = true,    conversionFormatter = { fraction -> "${(fraction * 100).toInt()}% kept" },)

Conversion is measured from the previous stage, not from the first.

Edge cases#

• A first stage of 0f yields all-zero fractions rather than a NaN.
• A stage larger than the first is clamped to full width, rather than silently rescaling every other stage.

Accessibility#

FunnelChart is not a Cartesian chart, so it takes a standalone accessibilityDescription parameter instead of reading one from ChartInteractionConfig. It attaches a chart summary plus one focusable node per stage.

Configuration#

FunnelChartConfig(orientation, stageGap, animation, showStageLabels, showConversionLabels, valueFormatter, conversionFormatter, labelStyle, conversionLabelStyle).

Limitations#

• Not a Cartesian chart: no visibleWindow, no markers, no crosshair, no viewport pan/zoom, and no interactionConfig parameter.
• No tooltip slot — ChartTooltip.canvas() needs a ChartContext that a non-Cartesian chart has none of. Use onStageClick.