insightdock::charts::ScatterChart

Scatter chart with continuous numeric x and y axes.

Synopsis

Declared in <insightdock/scatter_chart.h>

class ScatterChart
    : public Chart

Base Classes

Name	Description
`Chart`	Abstract base for all chart types.

Member Functions

Name	Description
`add_series`	`add_series` overloads
`apply_theme`	Apply a `ChartTheme` to this chart's color and typography options.
`clear_series`	Remove all series.
`clone` [virtual]
`draw` [virtual]	Draw axes, legend and scatter/bubble marks into any backend.
`options`	`options` overloads
`render` [virtual]	Render axes, grid, legend, and markers to RGBA.
`scatter_options`	Mutable scatter options.
`series`	All data series.
`vector_capability` [virtual]

Protected Data Members

Name
`options_`

Non-Member Functions

Name	Description
`detail::build_chart_svg`	Render `chart` as a native-vector SVG document.

Description

Unlike BarChart / LineChart, the x-axis here is not a category list — both axes use linear Scale mapping over the data domain, so x values need not be evenly spaced or sorted. This is why ScatterChart derives directly from Chart rather than CartesianChart.

Set a positive ScatterPoint::radius on any point to enable the bubble variant: that point's marker is scaled between ScatterOptions::min_bubble_radius and ScatterOptions::max_bubble_radius based on its radius value relative to other bubble points. Points left at radius 0 always draw at the fixed ScatterOptions::point_radius.


ScatterChart chart;
chart.add_series("Devices", {{1, 20}, {2, 35}, {3, 18}});
ChartExporter::save(chart, "scatter.png");