iOS & macOS Charting Documentation - SciChart iOS & macOS Charts SDK v4.x

ISCIAxisCore

@protocol ISCIAxisCore <ISCIServiceProvider, ISCISuspendable,
                        ISCIInvalidatableElement, ISCIThemeable, ISCIAttachable>

Defines the base protocol for all axes types used throughout the SciChart SDK.

  • Gets or sets the VisibleRange of the Axis.

    Note

    Setting the VisibleRange will cause the axis to redraw.

    Declaration

    Objective-C

    @property (nonatomic, strong) id<ISCIRange> _Nonnull visibleRange;

    Swift

    var visibleRange: any ISCIRange { get set }

  • Gets or sets the GrowBy Factor. e.g. GrowBy [0.1, 0.2] will increase the axis extents by 10% (min) and 20% (max) outside of the data range.

    Declaration

    Objective-C

    @property (nonatomic, strong) id<ISCIRange> _Nonnull growBy;

    Swift

    var growBy: any ISCIRange { get set }

  • Gets or sets the string Id of this axis. Used to associated ISCIRenderableSeries.

    Declaration

    Objective-C

    @property (nonatomic, copy) NSString *_Nonnull axisId;

    Swift

    var axisId: String { get set }

  • Gets or sets the visibleRangeLimit of the Axis.

    Note

    This will be used to clip the axis during ZoomExtents and AutoRange operations.

    Declaration

    Objective-C

    @property (nonatomic, strong, nullable) id<ISCIRange> visibleRangeLimit;

    Swift

    var visibleRangeLimit: (any ISCIRange)? { get set }

  • Gets or ses the VisibleRangeLimitMode of the Axis.

    Note

    This property defines which parts of visibleRangeLimit will be used by axis.

    Declaration

    Objective-C

    @property (nonatomic) SCIRangeClipMode visibleRangeLimitMode;

    Swift

    var visibleRangeLimitMode: SCIRangeClipMode { get set }

  • Gets or sets the minimal zoom constrain of the axis.

    Note

    Used to set the minimum distance between Min and Max of the VisibleRange.

    Declaration

    Objective-C

    @property (nonatomic, strong, nullable) id<ISCIComparable> minimalZoomConstrain;

    Swift

    var minimalZoomConstrain: (any ISCIComparable)? { get set }

  • Gets or sets the maximum zoom constrain of the axis.

    Note

    Used to set the maximum distance between Min and Max of the VisibleRange.

    Declaration

    Objective-C

    @property (nonatomic, strong, nullable) id<ISCIComparable> maximumZoomConstrain;

    Swift

    var maximumZoomConstrain: (any ISCIComparable)? { get set }

  • Gets or sets the minor delta value.

    Note

    Used for axis minor ticks spacing.

    Declaration

    Objective-C

    @property (nonatomic, strong) id<ISCIComparable> _Nonnull minorDelta;

    Swift

    var minorDelta: any ISCIComparable { get set }

  • Gets or sets the major delta value.

    Note

    Used for axis major ticks spacing.

    Declaration

    Objective-C

    @property (nonatomic, strong) id<ISCIComparable> _Nonnull majorDelta;

    Swift

    var majorDelta: any ISCIComparable { get set }

  • Definies the value that indicates whether to calculate ticks automatically. Default is YES.

    Declaration

    Objective-C

    @property (nonatomic) BOOL autoTicks;

    Swift

    var autoTicks: Bool { get set }

  • Definies the max auto ticks amount.

    Declaration

    Objective-C

    @property (nonatomic) unsigned int maxAutoTicks;

    Swift

    var maxAutoTicks: UInt32 { get set }

  • Definies the number of minor delta ticks per major tick.

    Declaration

    Objective-C

    @property (nonatomic) unsigned int minorsPerMajor;

    Swift

    var minorsPerMajor: UInt32 { get set }

  • Gets or sets a flag indicating whether to flip the tick and pixel coordinate generation for this axis, causing the axis ticks to decrement and chart to be flipped in the axis direction.

    Note

    If YES - reverses the ticks and coordinates for the axis.

    Declaration

    Objective-C

    @property (nonatomic) BOOL flipCoordinates;

    Swift

    var flipCoordinates: Bool { get set }

  • Definies a flag indicating whether to draw major ticks or not.

    Declaration

    Objective-C

    @property (nonatomic) BOOL drawMajorTicks;

    Swift

    var drawMajorTicks: Bool { get set }

  • Definies a flag indicating whether to draw major grid lines or not.

    Declaration

    Objective-C

    @property (nonatomic) BOOL drawMajorGridLines;

    Swift

    var drawMajorGridLines: Bool { get set }

  • Definies a flag indicating whether to draw major bands or not.

    Declaration

    Objective-C

    @property (nonatomic) BOOL drawMajorBands;

    Swift

    var drawMajorBands: Bool { get set }

  • Definies a flag indicating whether to draw minor ticks or not.

    Declaration

    Objective-C

    @property (nonatomic) BOOL drawMinorTicks;

    Swift

    var drawMinorTicks: Bool { get set }

  • Definies a flag indicating whether to draw minor grid lines or not.

    Declaration

    Objective-C

    @property (nonatomic) BOOL drawMinorGridLines;

    Swift

    var drawMinorGridLines: Bool { get set }

  • Definies a flag indicating whether to draw tick labels or not.

    Declaration

    Objective-C

    @property (nonatomic) BOOL drawLabels;

    Swift

    var drawLabels: Bool { get set }

  • Defines the string with value for this axis title.

    Declaration

    Objective-C

    @property (nonatomic, copy) NSString *_Nonnull axisTitle;

    Swift

    var axisTitle: String { get set }

  • Defines the attributed string with value for this axis title.

    Warning

    If set - current annotation instance will ignore the axisTitle property.

    Declaration

    Objective-C

    @property (nonatomic, copy) NSAttributedString *_Nonnull attributedAxisTitle;

    Swift

    @NSCopying var attributedAxisTitle: NSAttributedString { get set }

  • Gets or sets auto range mode for current axis. Default is SCIAutoRange.SCIAutoRange_Once.

    Possible values:

    Declaration

    Objective-C

    @property (nonatomic) SCIAutoRange autoRange;

    Swift

    var autoRange: SCIAutoRange { get set }

  • Gets or sets a ISCITickProvider instance on current axis.

    Note

    Used to compute the data-values of Axis Grid Lines, Ticks and Labels.

    Declaration

    Objective-C

    @property (nonatomic, strong) id<ISCITickProvider> _Nonnull tickProvider;

    Swift

    var tickProvider: any ISCITickProvider { get set }

  • Gets or sets a ISCITickCoordinatesProvider instance on current axis.

    Note

    Used to transform the data-values received from ISCITickProvider instance to the coordinates for Axis gridlines, ticks and labels drawing

    Declaration

    Objective-C

    @property (nonatomic, strong) id<ISCITickCoordinatesProvider> _Nonnull tickCoordinatesProvider;

    Swift

    var tickCoordinatesProvider: any ISCITickCoordinatesProvider { get set }

  • Gets or sets a ISCILabelProvider instance.

    Note

    May be used to programmatically override the formatting of text and cursor labels.

    Declaration

    Objective-C

    @property (nonatomic, strong) id<ISCILabelProvider> _Nonnull labelProvider;

    Swift

    var labelProvider: any ISCILabelProvider { get set }

  • Defines the TextFormatting string for tick labels on this axis.

    Note

    The format string uses the format patterns from the Unicode Technical Standard #35.

    Declaration

    Objective-C

    @property (nonatomic, copy, nullable) NSString *textFormatting;

    Swift

    var textFormatting: String? { get set }

  • Defines the text formatting string for labels on this cursor.

    Note

    The format string uses the format patterns from the Unicode Technical Standard #35.

    Declaration

    Objective-C

    @property (nonatomic, copy, nullable) NSString *cursorTextFormatting;

    Swift

    var cursorTextFormatting: String? { get set }

  • Defines the style which is used to draw all major grid lines on this axis.

    Declaration

    Objective-C

    @property (nonatomic, strong) SCIPenStyle *_Nonnull majorGridLineStyle;

    Swift

    var majorGridLineStyle: SCIPenStyle { get set }

  • Defines the style which is used to draw all minor grid lines on this axis.

    Declaration

    Objective-C

    @property (nonatomic, strong) SCIPenStyle *_Nonnull minorGridLineStyle;

    Swift

    var minorGridLineStyle: SCIPenStyle { get set }

  • Defines the style for Axis Bands.

    Declaration

    Objective-C

    @property (nonatomic, strong) SCIBrushStyle *_Nonnull axisBandsStyle;

    Swift

    var axisBandsStyle: SCIBrushStyle { get set }

  • Defines the style which is used to draw all major ticks on this axis.

    Declaration

    Objective-C

    @property (nonatomic, strong) SCIPenStyle *_Nonnull majorTickLineStyle;

    Swift

    var majorTickLineStyle: SCIPenStyle { get set }

  • Gets or sets the style which is used to draw all minor ticks on this axis.

    Declaration

    Objective-C

    @property (nonatomic, strong) SCIPenStyle *_Nonnull minorTickLineStyle;

    Swift

    var minorTickLineStyle: SCIPenStyle { get set }

  • Gets or sets the the length of all major ticks on this axis in pixels.

    Declaration

    Objective-C

    @property (nonatomic) float majorTickLineLength;

    Swift

    var majorTickLineLength: Float { get set }

  • Gets or sets the the length of all minor ticks on this axis in pixels.

    Declaration

    Objective-C

    @property (nonatomic) float minorTickLineLength;

    Swift

    var minorTickLineLength: Float { get set }

  • Defines the style which is used to draw axis title.

    Declaration

    Objective-C

    @property (nonatomic, strong) SCIFontStyle *_Nonnull titleStyle;

    Swift

    var titleStyle: SCIFontStyle { get set }

  • Defines the style which is used to draw all tick labels on this axis.

    Declaration

    Objective-C

    @property (nonatomic, strong) SCIFontStyle *_Nonnull tickLabelStyle;

    Swift

    var tickLabelStyle: SCIFontStyle { get set }

  • Gets the current ISCICoordinateCalculator for this axis, based on visible range and axis type.

    Declaration

    Objective-C

    @property (nonatomic, strong, readonly) id<ISCICoordinateCalculator> _Nonnull currentCoordinateCalculator;

    Swift

    var currentCoordinateCalculator: any ISCICoordinateCalculator { get }

  • Defines the axis thickness in pixels.

    Declaration

    Objective-C

    @property (nonatomic) CGFloat axisThickness;

    Swift

    var axisThickness: CGFloat { get set }

  • Creates a coordinate calculator from specified visible range.

    Declaration

    Objective-C

    - (nonnull id<ISCICoordinateCalculator>)createCoordinateCalculatorFromRange:
    (nonnull id<ISCIRange>)visibleRange;

    Swift

    func createCoordinateCalculator(from visibleRange: any ISCIRange) -> any ISCICoordinateCalculator

    Parameters

    visibleRange

    The visible range to create coordinate calculator from.

    Return Value

    The coordinate calculator instance.

  • Animates the visible range of the axis to the destination visible range, over the specified duration.

    Declaration

    Objective-C

    - (void)animateVisibleRangeTo:(nonnull id<ISCIRange>)range
                 withDuration:(float)duration;

    Swift

    func animateVisibleRange(to range: any ISCIRange, withDuration duration: Float)

    Parameters

    range

    The end range.
    duration

    The duration of the animation.

  • Gets whether the passed range is valid.

    Declaration

    Objective-C

    - (BOOL)isValidRange:(nonnull id<ISCIRange>)range;

    Swift

    func isValidRange(_ range: any ISCIRange) -> Bool

    Parameters

    range

    Passed range, that should be validated.

  • Gets whether visibleRange is valid, e.g. is not nil, the difference between Max and Min is positive.

    Declaration

    Objective-C

    @property (nonatomic, readonly) BOOL hasValidVisibleRange;

    Swift

    var hasValidVisibleRange: Bool { get }

  • Gets whether the visibleRange has default value.

    Declaration

    Objective-C

    @property (nonatomic, readonly) BOOL hasDefaultVisibleRange;

    Swift

    var hasDefaultVisibleRange: Bool { get }

  • Gets the default non zero ISCIRange, called internally by SciChart to reset the visibleRange of an axis to an default state.

    Declaration

    Objective-C

    @property (nonatomic, strong, readonly) id<ISCIRange> _Nonnull defaultNonZeroRange;

    Swift

    var defaultNonZeroRange: any ISCIRange { get }

  • Used internally for notification of axis when data range changes.

    Declaration

    Objective-C

    - (void)onDataRangeChanged;

    Swift

    func onDataRangeChanged()

  • Converts given the x or y pixel coordinate to the data value at this coordinate.

    Declaration

    Objective-C

    - (nonnull id<ISCIComparable>)getDataValueFrom:(float)pixelCoordinate;

    Swift

    func getDataValue(_ pixelCoordinate: Float) -> any ISCIComparable

    Parameters

    pixelCoordinate

    The coordinate in pixels to convert.

    Return Value

    The data value.

  • Converts given data value to the x or y pixel coordinate on this axis.

    Declaration

    Objective-C

    - (float)getCoordinateFrom:(nonnull id<ISCIComparable>)value;

    Swift

    func getCoordinate(_ value: any ISCIComparable) -> Float

    Parameters

    value

    The data value to convert.

    Return Value

    The coordinate in pixels.

  • Gets or sets the visibility of the Axis.

    Declaration

    Objective-C

    @property (nonatomic) BOOL isVisible;

    Swift

    var isVisible: Bool { get set }

  • Gets the axis viewport dimension, which is used by ISCICoordinateCalculator of the Axis.

    Declaration

    Objective-C

    @property (nonatomic, readonly) CGFloat axisViewportDimension;

    Swift

    var axisViewportDimension: CGFloat { get }

Text Formatting

Operations with Ranges

  • Gets the maximum range of the axis, based on the data-range of all series.

    Note

    Computed property, which is calculated via -getMaximumRange: without force cache updating.

    Declaration

    Objective-C

    @property (nonatomic, readonly) id<ISCIRange> _Nonnull maximumRange;

    Swift

    var maximumRange: any ISCIRange { get }

  • Gets the maximum range of the axis, based on the data-range of all series.

    Declaration

    Objective-C

    - (nonnull id<ISCIRange>)getMaximumRange:(BOOL)forceCacheUpdate;

    Swift

    func getMaximumRange(_ forceCacheUpdate: Bool) -> any ISCIRange

    Parameters

    forceCacheUpdate

    Flag indicating whether the cached results should be updated.

    Return Value

    The maximum range for this axis.

  • Gets the data range (full extents of the data) of the Axis.

    Note

    Computed property, which is calculated via -getDataRange: without force cache updating.

    Declaration

    Objective-C

    @property (nonatomic, readonly) id<ISCIRange> _Nonnull dataRange;

    Swift

    var dataRange: any ISCIRange { get }

  • Gets the data range (full extents of the data) of the Axis.

    Declaration

    Objective-C

    - (nonnull id<ISCIRange>)getDataRange:(BOOL)forceCacheUpdate;

    Swift

    func getDataRange(_ forceCacheUpdate: Bool) -> any ISCIRange

    Parameters

    forceCacheUpdate

    Flag indicating whether the cached results should be updated.

    Return Value

    The data range for this axis.

  • Defines the SCIVisibleRangeChangeListener for this axis instance.

    Declaration

    Objective-C

    @property (nonatomic, strong, nullable) SCIVisibleRangeChangeListener visibleRangeChangeListener;

    Swift

    var visibleRangeChangeListener: SCIVisibleRangeChangeListener? { get set }

  • Defines the SCIDataRangeChangeListener for this axis instance.

    Declaration

    Objective-C

    @property (nonatomic, strong, nullable) SCIDataRangeChangeListener dataRangeChangeListener;

    Swift

    var dataRangeChangeListener: SCIDataRangeChangeListener? { get set }

  • Gets the lock for current axis params. Used internally for synchronization of axis updated during render pass

    Declaration

    Objective-C

    @property (nonatomic, readonly) id<ISCIReadWriteLock> _Nonnull axisParamsLock;

    Swift

    var axisParamsLock: any ISCIReadWriteLock { get }

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