Core Plot (iOS and tvOS)
Cocoa plotting framework for macOS, iOS, and tvOS
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An abstract plot class. More...
#import <CPTPlot.h>
Public Instance Methods | |
(void) | - reloadPlotDataInIndexRange: [implementation] |
Reload plot data in the given index range from the data source immediately. More... | |
(nullable NSString *) | - titleForLegendEntryAtIndex: [implementation] |
The title text of a legend entry. More... | |
(nullable NSAttributedString *) | - attributedTitleForLegendEntryAtIndex: [implementation] |
The styled title text of a legend entry. More... | |
(nonnull CPTNumberArray *) | - fieldIdentifiersForCoordinate: [implementation] |
The field identifiers that correspond to a particular coordinate. More... | |
(CPTCoordinate) | - coordinateForFieldIdentifier: [implementation] |
The coordinate value that corresponds to a particular field identifier. More... | |
(void) | - positionLabelAnnotation:forIndex: [implementation] |
Adjusts the position of the data label annotation for the plot point at the given index. More... | |
(NSUInteger) | - dataIndexFromInteractionPoint: [implementation] |
Determines the index of the data element that is under the given point. More... | |
Plot Data Ranges | |
(nullable CPTPlotRange *) | - plotRangeForField: |
Determines the smallest plot range that fully encloses the data for a particular field. More... | |
(nullable CPTPlotRange *) | - plotRangeForCoordinate: |
Determines the smallest plot range that fully encloses the data for a particular coordinate. More... | |
(nullable CPTPlotRange *) | - plotRangeEnclosingField: |
Determines the smallest plot range that fully encloses the entire plot for a particular field. More... | |
(nullable CPTPlotRange *) | - plotRangeEnclosingCoordinate: |
Determines the smallest plot range that fully encloses the entire plot for a particular coordinate. More... | |
Initialization | |
(nonnull instancetype) | - initWithFrame: [implementation] |
Initializes a newly allocated CPTPlot object with the provided frame rectangle. More... | |
User Interaction | |
(BOOL) | - pointingDeviceDownEvent:atPoint: [implementation] |
Informs the receiver that the user has started touching the screen. More... | |
(BOOL) | - pointingDeviceUpEvent:atPoint: [implementation] |
Informs the receiver that the user has ended touching the screen. More... | |
(NSUInteger) | - dataIndexFromInteractionPoint: |
Fields | |
(NSUInteger) | - numberOfFields |
Number of fields in a plot data record. More... | |
(nonnull CPTNumberArray *) | - fieldIdentifiers |
Identifiers (enum values) identifying the fields. More... | |
(nonnull CPTNumberArray *) | - fieldIdentifiersForCoordinate: |
(CPTCoordinate) | - coordinateForFieldIdentifier: |
Public Instance Methods inherited from CPTAnnotationHostLayer | |
(void) | - addAnnotation: |
Adds an annotation to the receiver. More... | |
(void) | - removeAnnotation: |
Removes an annotation from the receiver. More... | |
(void) | - removeAllAnnotations |
Removes all annotations from the receiver. More... | |
(BOOL) | - pointingDeviceDraggedEvent:atPoint: [implementation] |
Informs the receiver that the user has moved their finger while touching the screen. More... | |
(BOOL) | - pointingDeviceCancelledEvent: [implementation] |
Informs the receiver that tracking of touches has been cancelled for any reason. More... | |
Public Instance Methods inherited from CPTLayer | |
(nullable instancetype) | - initWithCoder: |
Returns an object initialized from data in a given unarchiver. More... | |
(nonnull instancetype) | - initWithLayer: |
Override to copy or initialize custom fields of the specified layer. More... | |
(nonnull instancetype) | - init [implementation] |
Initializes a newly allocated CPTLayer object with an empty frame rectangle. More... | |
(void) | - logLayers |
Logs this layer and all of its sublayers. More... | |
(BOOL) | - pointingDeviceDownEvent:atPoint: [implementation] |
(BOOL) | - pointingDeviceUpEvent:atPoint: [implementation] |
(BOOL) | - pointingDeviceDraggedEvent:atPoint: [implementation] |
(BOOL) | - pointingDeviceCancelledEvent: [implementation] |
(nullable CPTNativeImage *) | - imageOfLayer |
Gets an image of the layer contents. More... | |
(void) | - setNeedsDisplayAllLayers |
Recursively marks this layer and all sublayers as needing to be redrawn. More... | |
(void) | - renderAsVectorInContext: |
Draws layer content into the provided graphics context. More... | |
(void) | - recursivelyRenderInContext: |
Draws layer content and the content of all sublayers into the provided graphics context. More... | |
(void) | - layoutAndRenderInContext: |
Updates the layer layout if needed and then draws layer content and the content of all sublayers into the provided graphics context. More... | |
(nonnull NSData *) | - dataForPDFRepresentationOfLayer |
Draws layer content and the content of all sublayers into a PDF document. More... | |
(void) | - applySublayerMaskToContext:forSublayer:withOffset: |
Recursively sets the clipping path of the given graphics context to the sublayer masking paths of its superlayers. More... | |
(void) | - applyMaskToContext: |
Sets the clipping path of the given graphics context to mask the content. More... | |
(void) | - pixelAlign |
Align the receiver’s position with pixel boundaries. More... | |
(void) | - sublayerMarginLeft:top:right:bottom: |
Returns the margins that should be left between the bounds of the receiver and all sublayers. More... | |
(void) | - layoutSublayers [implementation] |
Updates the layout of all sublayers. Sublayers fill the super layer’s bounds minus any padding. More... | |
Public Instance Methods inherited from CALayer | |
(BOOL) | - containsPoint: |
(void) | - drawInContext: |
(id) | - init |
(id) | - initWithLayer |
(void) | - layoutSublayers |
(void) | - setNeedsDisplay |
(void) | - setNeedsDisplayInRect: |
(void) | - setNeedsLayout |
Public Instance Methods inherited from NSObject | |
(Class) | - classForCoder |
(id) | - copy |
(void) | - dealloc |
(void) | - finalize |
(id) | - init |
(id) | - mutableCopy |
Public Instance Methods inherited from <NSObject> | |
(NSString *) | - description |
(NSUInteger) | - hash |
(BOOL) | - isEqual: |
User Interaction |
Properties | |
Data Source | |
id< CPTPlotDataSource > | dataSource |
The data source for the plot. More... | |
Identification | |
NSString * | title |
The title of the plot displayed in the legend. More... | |
NSAttributedString * | attributedTitle |
The styled title of the plot displayed in the legend. More... | |
Plot Space | |
CPTPlotSpace * | plotSpace |
The plot space for the plot. More... | |
Plot Area | |
CPTPlotArea * | plotArea |
The plot area for the plot. More... | |
Drawing | |
BOOL | alignsPointsToPixels |
If YES (the default), all plot points will be aligned to device pixels when drawing. More... | |
Properties inherited from CPTAnnotationHostLayer | |
CPTAnnotationArray * | annotations |
An array of annotations attached to this layer. More... | |
Properties inherited from CPTLayer | |
CPTGraph * | graph |
The graph for the layer. More... | |
CGFloat | paddingLeft |
Amount to inset the left side of each sublayer. More... | |
CGFloat | paddingTop |
Amount to inset the top of each sublayer. More... | |
CGFloat | paddingRight |
Amount to inset the right side of each sublayer. More... | |
CGFloat | paddingBottom |
Amount to inset the bottom of each sublayer. More... | |
id< NSCopying, NSCoding, NSObject > | identifier |
An object used to identify the layer in collections. More... | |
CGFloat | contentsScale |
The scale factor applied to the layer. More... | |
BOOL | useFastRendering |
If YES, subclasses should optimize their drawing for speed over precision. More... | |
CPTShadow * | shadow |
The shadow drawn under the layer content. If nil (the default), no shadow is drawn. More... | |
CGSize | shadowMargin |
The maximum margin size needed to fully enclose the layer shadow. More... | |
BOOL | masksToBorder |
If YES, a sublayer mask is applied to clip sublayer content to the inside of the border. More... | |
CGPathRef | outerBorderPath |
A drawing path that encompasses the outer boundary of the layer border. More... | |
CGPathRef | innerBorderPath |
A drawing path that encompasses the inner boundary of the layer border. More... | |
CGPathRef | maskingPath |
A drawing path that encompasses the layer content including any borders. Set to NULL when no masking is desired. More... | |
CGPathRef | sublayerMaskingPath |
A drawing path that encompasses the layer content excluding any borders. Set to NULL when no masking is desired. More... | |
CPTSublayerSet * | sublayersExcludedFromAutomaticLayout |
A set of sublayers that should be excluded from the automatic sublayer layout. More... | |
Properties inherited from CALayer | |
CGPoint | anchorPoint |
CGRect | bounds |
CGFloat | contentsScale |
CGFloat | cornerRadius |
id | delegate |
CGRect | frame |
BOOL | masksToBounds |
BOOL | needsDisplayOnBoundsChange |
BOOL | opacity |
BOOL | opaque |
Properties inherited from <CAMediaTiming> | |
BOOL | autoreverses |
CFTimeInterval | beginTime |
CFTimeInterval | duration |
NSString * | fillMode |
float | repeatCount |
id | repeatDuration |
float | speed |
CFTimeInterval | timeOffset |
Data Loading | |
BOOL | dataNeedsReloading |
If YES, the plot data will be reloaded from the data source before the layer content is drawn. More... | |
(void) | - setDataNeedsReloading |
Marks the receiver as needing the data source reloaded before the content is next drawn. More... | |
(void) | - reloadData |
Reload all plot data, labels, and plot-specific information from the data source immediately. More... | |
(void) | - reloadDataIfNeeded |
Reload plot data from the data source only if the data cache is out of date. More... | |
(void) | - reloadDataInIndexRange: |
Reload plot data, labels, and plot-specific information in the given index range from the data source immediately. More... | |
(void) | - insertDataAtIndex:numberOfRecords: |
Insert records into the plot data cache at the given index. More... | |
(void) | - deleteDataInIndexRange: |
Delete records in the given index range from the plot data cache. More... | |
(void) | - reloadPlotData |
Reload all plot data from the data source immediately. More... | |
(void) | - reloadPlotDataInIndexRange: |
Data Cache | |
NSUInteger | cachedDataCount |
The number of data points stored in the cache. More... | |
BOOL | doublePrecisionCache |
If YES, the cache holds data of type double , otherwise it holds NSDecimal. More... | |
CPTPlotCachePrecision | cachePrecision |
The numeric precision used to cache the plot data and perform all plot calculations. Defaults to CPTPlotCachePrecisionAuto. More... | |
CPTNumericDataType | doubleDataType |
The CPTNumericDataType used to cache plot data as double . More... | |
CPTNumericDataType | decimalDataType |
The CPTNumericDataType used to cache plot data as NSDecimal. More... | |
(nullable CPTMutableNumericData *) | - cachedNumbersForField: |
Retrieves an array of numbers from the cache. More... | |
(nullable NSNumber *) | - cachedNumberForField:recordIndex: |
Retrieves a single number from the cache. More... | |
(double) | - cachedDoubleForField:recordIndex: |
Retrieves a single number from the cache. More... | |
(NSDecimal) | - cachedDecimalForField:recordIndex: |
Retrieves a single number from the cache. More... | |
(nullable NSArray *) | - cachedArrayForKey: |
Retrieves an array of values from the cache. More... | |
(nullable id) | - cachedValueForKey:recordIndex: |
Retrieves a single value from the cache. More... | |
(void) | - cacheNumbers:forField: |
Copies an array of numbers to the cache. More... | |
(void) | - cacheNumbers:forField:atRecordIndex: |
Copies an array of numbers to replace a part of the cache. More... | |
(void) | - cacheArray:forKey: |
Copies an array of arbitrary values to the cache. More... | |
(void) | - cacheArray:forKey:atRecordIndex: |
Copies an array of arbitrary values to replace a part of the cache. More... | |
Data Labels | |
BOOL | needsRelabel |
If YES, the plot needs to be relabeled before the layer content is drawn. More... | |
BOOL | adjustLabelAnchors |
If YES, data labels anchor points are adjusted automatically when the labels are positioned. If NO, data labels anchor points do not change. More... | |
BOOL | showLabels |
Set to NO to override all other label settings and hide the data labels. Defaults to YES. More... | |
CGFloat | labelOffset |
The distance that labels should be offset from their anchor points. The direction of the offset is defined by subclasses. More... | |
CGFloat | labelRotation |
The rotation of the data labels in radians. Set this property to π/2 to have labels read up the screen, for example. More... | |
NSUInteger | labelField |
The plot field identifier of the data field used to generate automatic labels. More... | |
CPTTextStyle * | labelTextStyle |
The text style used to draw the data labels. Set this property to nil to hide the data labels. More... | |
NSFormatter * | labelFormatter |
The number formatter used to format the data labels. Set this property to nil to hide the data labels. If you need a non-numerical label, such as a date, you can use a formatter than turns the numerical plot coordinate into a string (e.g., “Jan 10, 2010”). The CPTCalendarFormatter and CPTTimeFormatter classes are useful for this purpose. More... | |
CPTShadow * | labelShadow |
The shadow applied to each data label. More... | |
(void) | - setNeedsRelabel |
Marks the receiver as needing to update all data labels before the content is next drawn. More... | |
(void) | - relabel |
Updates the data labels in the labelIndexRange. More... | |
(void) | - relabelIndexRange: |
Marks the receiver as needing to update a range of data labels before the content is next drawn. More... | |
(void) | - repositionAllLabelAnnotations |
Repositions all existing label annotations. More... | |
(void) | - reloadDataLabels |
Reload all data labels from the data source immediately. More... | |
(void) | - reloadDataLabelsInIndexRange: |
Reload data labels in the given index range from the data source immediately. More... | |
(void) | - positionLabelAnnotation:forIndex: |
Legends | |
BOOL | drawLegendSwatchDecoration |
If YES (the default), additional plot-specific decorations, symbols, and/or colors will be drawn on top of the legend swatch rectangle. More... | |
(NSUInteger) | - numberOfLegendEntries |
The number of legend entries provided by this plot. More... | |
(nullable NSString *) | - titleForLegendEntryAtIndex: |
(nullable NSAttributedString *) | - attributedTitleForLegendEntryAtIndex: |
(void) | - drawSwatchForLegend:atIndex:inRect:inContext: |
Draws the legend swatch of a legend entry. Subclasses should call super to draw the background fill and border. More... | |
Plot Data | |
(nullable id) | - numbersFromDataSourceForField:recordIndexRange: |
Gets a range of plot data for the given plot and field. More... | |
(BOOL) | - loadNumbersForAllFieldsFromDataSourceInRecordIndexRange: |
Gets a range of plot data for the given plot. More... | |
(nonnull id) | + nilData |
A unique marker object used in collections to indicate that the datasource returned nil. More... | |
Additional Inherited Members | |
Public Class Methods inherited from CALayer | |
(id) | + layer |
Public Class Methods inherited from NSObject | |
(id) | + alloc |
(Class) | + class |
(void) | + initialize |
(void) | + load |
(id) | + new |
Public Class Methods inherited from <NSSecureCoding> | |
(BOOL) | + supportsSecureCoding: |
An abstract plot class.
Each data series on the graph is represented by a plot. Data is provided by a datasource that conforms to the CPTPlotDataSource protocol.
A Core Plot plot will request its data from the datasource when it is first displayed. You can force it to load new data in several ways:
You can also remove data from the plot without reloading anything by using the -deleteDataInIndexRange: method.
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implementation |
The styled title text of a legend entry.
idx | The index of the desired title. |
- (nullable NSAttributedString *) attributedTitleForLegendEntryAtIndex: | (NSUInteger) | idx |
Copies an array of arbitrary values to the cache.
array | An array of arbitrary values to cache. |
key | The key identifying the field. |
- (void) cacheArray: | (nullable NSArray *) | array | |
forKey: | (nonnull NSString *) | key | |
atRecordIndex: | (NSUInteger) | idx | |
Copies an array of arbitrary values to replace a part of the cache.
array | An array of arbitrary values to cache. |
key | The key identifying the field. |
idx | The index of the first data point to replace. |
Retrieves an array of values from the cache.
key | The key identifying the field. |
- (NSDecimal) cachedDecimalForField: | (NSUInteger) | fieldEnum | |
recordIndex: | (NSUInteger) | idx | |
Retrieves a single number from the cache.
fieldEnum | The field enumerator identifying the field. |
idx | The index of the desired data value. |
NaN
if no data is cached for the requested field. - (double) cachedDoubleForField: | (NSUInteger) | fieldEnum | |
recordIndex: | (NSUInteger) | idx | |
Retrieves a single number from the cache.
fieldEnum | The field enumerator identifying the field. |
idx | The index of the desired data value. |
NaN
if no data is cached for the requested field. - (nullable NSNumber *) cachedNumberForField: | (NSUInteger) | fieldEnum | |
recordIndex: | (NSUInteger) | idx | |
Retrieves a single number from the cache.
fieldEnum | The field enumerator identifying the field. |
idx | The index of the desired data value. |
- (nullable CPTMutableNumericData *) cachedNumbersForField: | (NSUInteger) | fieldEnum |
Retrieves an array of numbers from the cache.
fieldEnum | The field enumerator identifying the field. |
- (nullable id) cachedValueForKey: | (nonnull NSString *) | key | |
recordIndex: | (NSUInteger) | idx | |
Retrieves a single value from the cache.
key | The key identifying the field. |
idx | The index of the desired data value. |
- (void) cacheNumbers: | (nullable id) | numbers | |
forField: | (NSUInteger) | fieldEnum | |
Copies an array of numbers to the cache.
numbers | An array of numbers to cache. Can be a CPTNumericData, NSArray, or NSData (NSData is assumed to be a c-style array of type double ). |
fieldEnum | The field enumerator identifying the field. |
- (void) cacheNumbers: | (nullable id) | numbers | |
forField: | (NSUInteger) | fieldEnum | |
atRecordIndex: | (NSUInteger) | idx | |
Copies an array of numbers to replace a part of the cache.
numbers | An array of numbers to cache. Can be a CPTNumericData, NSArray, or NSData (NSData is assumed to be a c-style array of type double ). |
fieldEnum | The field enumerator identifying the field. |
idx | The index of the first data point to replace. |
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implementation |
The coordinate value that corresponds to a particular field identifier.
field | The field identifier for which the corresponding coordinate is desired. |
Provided by category CPTPlot(AbstractMethods).
- (CPTCoordinate) coordinateForFieldIdentifier: | (NSUInteger) | field |
Provided by category CPTPlot(AbstractMethods).
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implementation |
Determines the index of the data element that is under the given point.
point | The coordinates of the interaction. |
Provided by category CPTPlot(AbstractMethods).
- (NSUInteger) dataIndexFromInteractionPoint: | (CGPoint) | point |
Provided by category CPTPlot(AbstractMethods).
- (void) deleteDataInIndexRange: | (NSRange) | indexRange |
Delete records in the given index range from the plot data cache.
indexRange | The index range of the data records to remove. |
- (void) drawSwatchForLegend: | (nonnull CPTLegend *) | legend | |
atIndex: | (NSUInteger) | idx | |
inRect: | (CGRect) | rect | |
inContext: | (nonnull CGContextRef) | context | |
Draws the legend swatch of a legend entry. Subclasses should call super
to draw the background fill and border.
legend | The legend being drawn. |
idx | The index of the desired swatch. |
rect | The bounding rectangle where the swatch should be drawn. |
context | The graphics context to draw into. |
- (nonnull CPTNumberArray *) fieldIdentifiers |
Identifiers (enum values) identifying the fields.
Provided by category CPTPlot(AbstractMethods).
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implementation |
The field identifiers that correspond to a particular coordinate.
coord | The coordinate for which the corresponding field identifiers are desired. |
Provided by category CPTPlot(AbstractMethods).
- (nonnull CPTNumberArray *) fieldIdentifiersForCoordinate: | (CPTCoordinate) | coord |
Provided by category CPTPlot(AbstractMethods).
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implementation |
Initializes a newly allocated CPTPlot object with the provided frame rectangle.
This is the designated initializer. The initialized layer will have the following properties:
0
0.0
0.0
0
newFrame | The frame rectangle. |
Reimplemented from CPTAnnotationHostLayer.
Reimplemented in CPTPieChart, CPTTradingRangePlot, CPTRangePlot, CPTBarPlot, and CPTScatterPlot.
- (void) insertDataAtIndex: | (NSUInteger) | idx | |
numberOfRecords: | (NSUInteger) | numberOfRecords | |
Insert records into the plot data cache at the given index.
idx | The starting index of the new records. |
numberOfRecords | The number of records to insert. |
Gets a range of plot data for the given plot.
indexRange | The range of the data indexes of interest. |
+ (nonnull id) nilData |
A unique marker object used in collections to indicate that the datasource returned nil.
- (NSUInteger) numberOfFields |
Number of fields in a plot data record.
Provided by category CPTPlot(AbstractMethods).
- (NSUInteger) numberOfLegendEntries |
The number of legend entries provided by this plot.
- (nullable id) numbersFromDataSourceForField: | (NSUInteger) | fieldEnum | |
recordIndexRange: | (NSRange) | indexRange | |
Gets a range of plot data for the given plot and field.
fieldEnum | The field index. |
indexRange | The range of the data indexes of interest. |
- (nullable CPTPlotRange *) plotRangeEnclosingCoordinate: | (CPTCoordinate) | coord |
Determines the smallest plot range that fully encloses the entire plot for a particular coordinate.
coord | The coordinate identifier. |
- (nullable CPTPlotRange *) plotRangeEnclosingField: | (NSUInteger) | fieldEnum |
Determines the smallest plot range that fully encloses the entire plot for a particular field.
fieldEnum | The field enumerator identifying the field. |
- (nullable CPTPlotRange *) plotRangeForCoordinate: | (CPTCoordinate) | coord |
Determines the smallest plot range that fully encloses the data for a particular coordinate.
coord | The coordinate identifier. |
- (nullable CPTPlotRange *) plotRangeForField: | (NSUInteger) | fieldEnum |
Determines the smallest plot range that fully encloses the data for a particular field.
fieldEnum | The field enumerator identifying the field. |
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implementation |
Informs the receiver that the user has started touching the screen.
If this plot has a delegate that responds to the -plot:dataLabelTouchDownAtRecordIndex: or -plot:dataLabelTouchDownAtRecordIndex:withEvent: methods, the data labels are searched to find the index of the one containing the interactionPoint
. The delegate method will be called and this method returns YES if the interactionPoint
is within a label. This method returns NO if the interactionPoint
is too far away from all of the data labels.
event | The OS event. |
interactionPoint | The coordinates of the interaction. |
Reimplemented from CPTAnnotationHostLayer.
Reimplemented in CPTPieChart, CPTTradingRangePlot, CPTRangePlot, CPTBarPlot, and CPTScatterPlot.
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implementation |
Informs the receiver that the user has ended touching the screen.
If this plot has a delegate that responds to the -plot:dataLabelTouchUpAtRecordIndex: or -plot:dataLabelTouchUpAtRecordIndex:withEvent: methods, the data labels are searched to find the index of the one containing the interactionPoint
. The delegate method will be called and this method returns YES if the interactionPoint
is within a label. This method returns NO if the interactionPoint
is too far away from all of the data labels.
If the data label being released is the same as the one that was pressed (see -pointingDeviceDownEvent:atPoint: ), if the delegate responds to the -plot:dataLabelWasSelectedAtRecordIndex: and/or -plot:dataLabelWasSelectedAtRecordIndex:withEvent: methods, these will be called.
event | The OS event. |
interactionPoint | The coordinates of the interaction. |
Reimplemented from CPTAnnotationHostLayer.
Reimplemented in CPTPieChart, CPTTradingRangePlot, CPTRangePlot, CPTBarPlot, and CPTScatterPlot.
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implementation |
Adjusts the position of the data label annotation for the plot point at the given index.
label | The annotation for the data label. |
idx | The data index for the label. |
Provided by category CPTPlot(AbstractMethods).
- (void) positionLabelAnnotation: | (nonnull CPTPlotSpaceAnnotation *) | label | |
forIndex: | (NSUInteger) | idx | |
Provided by category CPTPlot(AbstractMethods).
- (void) relabel |
Updates the data labels in the labelIndexRange.
- (void) relabelIndexRange: | (NSRange) | indexRange |
Marks the receiver as needing to update a range of data labels before the content is next drawn.
indexRange | The index range needing update. |
- (void) reloadData |
Reload all plot data, labels, and plot-specific information from the data source immediately.
- (void) reloadDataIfNeeded |
Reload plot data from the data source only if the data cache is out of date.
- (void) reloadDataInIndexRange: | (NSRange) | indexRange |
Reload plot data, labels, and plot-specific information in the given index range from the data source immediately.
indexRange | The index range to load. |
- (void) reloadDataLabels |
Reload all data labels from the data source immediately.
- (void) reloadDataLabelsInIndexRange: | (NSRange) | indexRange |
Reload data labels in the given index range from the data source immediately.
indexRange | The index range to load. |
- (void) reloadPlotData |
Reload all plot data from the data source immediately.
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implementation |
Reload plot data in the given index range from the data source immediately.
indexRange | The index range to load. |
- (void) reloadPlotDataInIndexRange: | (NSRange) | indexRange |
- (void) repositionAllLabelAnnotations |
Repositions all existing label annotations.
- (void) setDataNeedsReloading |
Marks the receiver as needing the data source reloaded before the content is next drawn.
- (void) setNeedsRelabel |
Marks the receiver as needing to update all data labels before the content is next drawn.
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implementation |
The title text of a legend entry.
idx | The index of the desired title. |
- (nullable NSString *) titleForLegendEntryAtIndex: | (NSUInteger) | idx |
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readwritenonatomicassign |
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readwritenonatomicassign |
If YES (the default), all plot points will be aligned to device pixels when drawing.
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readwritenonatomiccopy |
The styled title of the plot displayed in the legend.
Assigning a new value to this property also sets the value of the title property to the same string without formatting information.
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readnonatomicassign |
The number of data points stored in the cache.
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readwritenonatomicassign |
The numeric precision used to cache the plot data and perform all plot calculations. Defaults to CPTPlotCachePrecisionAuto.
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readnonatomicassign |
If YES, the plot data will be reloaded from the data source before the layer content is drawn.
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readwritenonatomicweak |
The data source for the plot.
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readnonatomicassign |
The CPTNumericDataType used to cache plot data as NSDecimal.
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readnonatomicassign |
The CPTNumericDataType used to cache plot data as double
.
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readnonatomicassign |
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readwritenonatomicassign |
If YES (the default), additional plot-specific decorations, symbols, and/or colors will be drawn on top of the legend swatch rectangle.
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readwritenonatomicassign |
The plot field identifier of the data field used to generate automatic labels.
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readwritenonatomicstrong |
The number formatter used to format the data labels. Set this property to nil to hide the data labels. If you need a non-numerical label, such as a date, you can use a formatter than turns the numerical plot coordinate into a string (e.g., “Jan 10, 2010”). The CPTCalendarFormatter and CPTTimeFormatter classes are useful for this purpose.
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readwritenonatomicstrong |
The shadow applied to each data label.
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readwritenonatomiccopy |
The text style used to draw the data labels. Set this property to nil to hide the data labels.
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readnonatomicassign |
If YES, the plot needs to be relabeled before the layer content is drawn.
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readnonatomicassign |
The plot area for the plot.
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readwritenonatomicstrong |
The plot space for the plot.
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readwritenonatomicassign |
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readwritenonatomiccopy |
The title of the plot displayed in the legend.
Assigning a new value to this property also sets the value of the attributedTitle property to nil.