iOS Charting Documentation - SciChart iOS Charts SDK v3.x

2D Chart Types

All 2D Chart types in SciChart iOS provided by the RenderableSeries API.

The ISCIRenderableSeries in SciChart are visual representations of X,Y Numeric or Date data. Some RenderableSeries render simple X, Y values (2D points in space), while some render additional information (such as X, Y0, Y1 values, or X, Y, Z values).

All RenderableSeries are inherited from SCIRenderableSeriesBase and are added to the SCIRenderableSeriesCollection which is stored in ISCIChartSurface.renderableSeries property. This collection supports multiple RenderableSeries of different types. Each RenderableSeries is rendered to the screen, displaying the data from an associated ISCIDataSeries.

The list of RenderableSeries provided out of the box is available below:

Read on to learn more about the features, that all RenderableSeries have in common. For specific features of any RenderableSeries please refer to a corresponding article on this series type.

NOTE: For more information about which DataSeries are used for which RenderableSeries, see the DataSeries Types page.

Common RenderableSeries Features

As mentioned above - all 2D series types in SciChart iOS conforms to the ISCIRenderableSeries protocol. One of the main features of RenderableSeries API is its extensibility. New series types can be created via the Custom RenderableSeries API. The list of other features shared by all the series types can be found below:

ISCIRenderableSeries property Description
ISCIRenderableSeries.dataSeries A DataSeries is the data-source for a RenderableSeries. Please see the DataSeries API section for a complete walkthrough of the DataSeries API.
ISCIRenderableSeriesCore.isVisible Allows to hide or show a series.
ISCIRenderableSeriesCore.isSelected A series can be made Selected to be drawn on the top of other RenderableSeries. Also, the series can alter its appearance in response to changes in the selection state. Please refer to the SeriesSelectionModifier article for more details.
ISCIRenderableSeries.pointMarker This feature lets you set an optional marker on data points, e.g. Ellipse, Square, Triangle or a custom shape. Its usage is described minutely in the PointMarker API article.
ISCIRenderableSeries.resamplingMode Allows to choose a particular ResamplingMode for a series, which specifies a way to reduce the DataSeries for drawing. For more details, see the Data Resampling article.
ISCIRenderableSeries.paletteProvider The PaletteProvider API allows changing the color of a series on a per-point basis. Please see the PaletteProvider API article for more information.
ISCIRenderableSeries.strokeStyle Allows to assign an SCIPenStyle object to determine how the series’ outline should be drawn. Please refer to the Styling and Theming section for more details.
ISCIRenderableSeries.seriesInfoProvider Allows to customize the result of inspection of a series by Chart Modifiers. Also can be used to specify how modifiers tooltips have to appear for this series. Please refer to the Cursors and Tooltips section for more info.
ISCIRenderableSeriesCore.selectedSeriesStyle Allows to change the appearance of a series when its selection status changes. Please refer to the SeriesSelectionModifier article to learn more about this.
ISCIRenderableSeries.xAxisId In case of multi axis, allows to attach a series to a specific X Axis.
ISCIRenderableSeries.yAxisId In case of multi axis, allows to attach a series to a specific Y Axis.
SCIRenderableSeriesBase property
SCIRenderableSeriesBase.zeroLineY Specifies the minimum Y value which is considered as an up value. Any part of a series which contains values that are above this value will be drawn upwards. Any part of the series with values below it will be drawn downwards.
SCIRenderableSeriesBase.drawNaNAs Specifies how data points with NaN Y values are rendered within a given series type. In SciChart, NaN values is treated as a special value which designates an empty point. It is rendered as a gap within a series. For some chart types, though, the ends of the gap can be connected with a line. See the next paragraph for more details.
IRenderableSeries Event Listeners
-[ISCIRenderableSeriesCore addIsVisibleChangeListener:] Allows to attach a SCIRenderableSeriesChangeListener to a series which will be called when its visibility changes. This can occur when the ISCIRenderableSeriesCore.isVisible property changes.
-[ISCIRenderableSeriesCore removeIsVisibleChangeListener:] Allows to unsubscribe from the series visibility changes.
-[ISCIRenderableSeriesCore addIsSelectedChangeListener:] Allows to attach a SCIRenderableSeriesChangeListener to a series which will be called when it becomes selected/deselected. This can occur when the ISCIRenderableSeriesCore.isSelected property changes.
-[ISCIRenderableSeriesCore removeIsSelectedChangeListener:] Allows to unsubscribe from the series selected/deselected changes.

For more comprehensive walkthrough into any feature or specifics of any series type please refer to articles on that series type. The list of the series types available out of the box can be found at the beginning of this article.

Adding a Gap onto a RenderableSeries

There is a special value reserved for this purpose in SciChart - NaN. If the Y value of a data point is equal to the NaN value, a series will render an empty space at this place, equal to the width of a single series bar:

Gap in RenderableSeries

Some chart types allow to configure how gaps appear on a series via the SCIRenderableSeriesBase.drawNaNAs property, e.g.:

Please see the SCILineDrawMode enumeration for more info.