CFXPointAttributes Class Reference
| Inherits from | |
| Conforms to | |
| Framework | |
| Availability |
Available in iOS 5.0 and later.
|
| Companion guide | |
| Declared in |
ChartFX.h
|
Overview
The goal of any chart is to provide a clear visual representation of data that can be easily read and interpreted by the user. To this end, Chart FX for iOS enables you to set PointLabels to clearly mark and identify the values on the chart. This is particularly useful when there are many data points and many series, which could appear busy and difficult to decipher.
Chart FX for iOS offer enhanced functionality and versatility. You are able to control the size, color, font etc. of every individual point label in your chart. This is extremely useful for highlighting critical points of data in a chart.
Properties
alternateColor
Gets or sets the alternate color for a selected item when using gradient FillMode.
Discussion
This property is used in conjunction with fillMode property. You need to set the FillMode to gradient in order to use AlternateColor property.
To create a gradient for an item, you first need to set an initial color using the color property. Then you can assign a AlternateColor to complete the gradient assignment.
For more information regarding the Color type, please refer to the Xcode and Objective-C Documentation.
Declared In
ChartFX.h
barShape
Gets or sets the Shape for the Bars.
Discussion
This property applies when the chart Gallery is set to Bar.
Declared In
ChartFX.h
border
Provides access to the border attributes object.
Discussion
The members of the BorderAttributes class allow customization of the border for CFXPoints and CFXSeries.
Color, Effect, Style, Width, etc, are some of the configurable attributes for Borders.
Declared In
ChartFX.h
color
Allows you to set a color for the selected item.
Discussion
If no colors are specified, the default color is automatically selected by Chart FX for iOS when you create the chart, and chosen according to the current palette and its position in the series array.
For more information regarding the Color type, please refer to your Xcode and Objective-C documentation.
Availability
- Available in iOS 5.0 and later.
Declared In
ChartFX.h
fillMode
Gets or sets a value indicating how Chart FX for iOS should fill the area representing the point.
Discussion
The default value is Solid.
The difference between colored patterns and black & white patterns, also known as hatched paterns, is that hatched patterns are defined by windows and they can be resized when printing the charts. However, there are limited hatched patterns available.
When creating gradients on point or series markers, the FillMode must be set to CFXFillModeGradient. The color and alternateColor properties can be set to create the desired gradient colors.
Declared In
ChartFX.h
line
Gets the LineAttributes object for the particular point.
Discussion
The CFXLineAttributes members allows customization of the lines at the CFXGlobalAttributes, CFXSeriesAttributes and CFXPointAttributes level.
LineAttributes will produce a different effect to each Gallery type. For a example, setting the Line.Width in a Bar chart will set width the line that goes around the bar, while in a Line chart, it will set the width of the line that connects the points.
Declared In
ChartFX.h
markerShape
Gets or sets the the type used to paint markers for the selected item.
Discussion
Point markers will not be shown in 3D line charts.
This property applies only to: LINES, CURVE, SCATTER, PARETO, STEP and RADAR charts.
Availability
- Available in iOS 5.0 and later.
See Also
Declared In
ChartFX.h
markerSize
Gets or sets a value controlling the size of the markers for the selected item.
Discussion
This property sets the radius of the marker in physical units (pixels). You must make sure the markerShape Property is set to a valid point type for this property to take effect.
Point markers will not be shown in 3D line charts.
Availability
- Available in iOS 5.0 and later.
See Also
Declared In
ChartFX.h
markerStyle
Gets or sets the the style used to paint markers for the selected item.
Discussion
Point markers will not be shown in 3D line charts.
This property applies only to: LINES, CURVE, SCATTER, PARETO, STEP and RADAR charts.
Declared In
ChartFX.h
picture
Gets or sets a value specifying the picture associated to the selected item.
Discussion
The Picture property may be used in two different ways depending on the chart's gallery and FillMode:
1. If the chart gallery is one that uses point markers, meaning you can set the shape of the marker using the MarkerShape property, then the configured image will be used as a point marker as long as the markerShape for that point is set to MarkerShape.Picture.
2. If the chart gallery is one that uses bars, area markers or pie slices (Bar, Area or Pie type charts), then the image will be tiled in the selected series or point. However, in order for the tiled effect to be applied you must set the fillMode to FillMode.Pattern.
The Legends and DataEditor will also show the picture but with an appropriated size. Notice that if you do not set the fillMode to FillMode.Pattern, the configured picture will only be used with charts that have point markers.
When this property is set to a 3D chart, the sides of the markers (3D perspective) are painted with the configured series color.
For more information regarding the Image type, please refer to the Xcode and Objective-C Documentation.
Declared In
ChartFX.h
pointLabels
Provides access to PointLabelAttributes allowing for the manipulation of attributes pertaining to the point label.
Discussion
The CFXPointAttributes members allows customization of the Point labels at the CFXGlobalAttributes, CFXSeriesAttributes and CFXPointAttributes level.
Declared In
ChartFX.h
separateSlice
Gets or sets a value allowing you to separate a slice of a Pie or Doughnut chart for a selected item.
Discussion
Setting this property to 100 will make the vertex of the slice to be on the edge of the pie.
Chart FX for iOS does not provide administrative properties, such as the biggest slice in a PIE chart, so if you want to separate a particular slice based on a certain condition, you must first determine the slice to be separated based on the data contained in the chart.
Declared In
ChartFX.h
tag
Gets or sets and object for the specific item.
Discussion
The Tag allows the developer to assign and external object to a Point, Series, or the Chart itself, to be retrieved later.
This feature is very useful for drill-down. For example, a data collection which contains the all the data for a particular series can be stored in the Tag, and accessed later, when the user clicks on that series.
Declared In
ChartFX.h
text
Gets or sets a value for labeling the point or series attribute.
Discussion
For Points, Text will be used to asign a string to the point, which can be used as a pointLabels, in a tooltip, etc.
For CFXSeriesAttibutes and CFXConditionalAttributes, Text will be used to asign a string for the legend.
Declared In
ChartFX.h
volume
Gets or sets a value indicating a volume for a data point markers in supported galleries. By adjusting the volume, you can modify the amount of space you want between the items.
Discussion
The larger the value, the lesser the distance between the selected point and its neighbors.
This property has a dual functionality depending on the clustered status of the chart, as follows:
If the chart is clustered, this property is used to specify the amount of space between the selected point and its neighbors in the z-axis (a.k.a. Gap Depth). When used in this context, this property is used for any chart type that supports clustered options (Including Multi-Type charts)
When the chart is not clustered, this property controls the amount of space between the selected point and its neighbors in the x-axis (a.k.a. Gap Width). When used in this context, this property applies to any chart type that allows side to side positioning of the series (BAR, BUBBLE, CANDLESTICK, HI-LO-CLOSE, OPEN-HI-LOW-CLOSE and CUBES).
If you want to control the Volume property for all the series in the chart (i.e. apply the same volume setting to all of them) you can use the chart class AllSeries property.
Declared In
ChartFX.h
Constants
CFXBarShape
Sets the shape for the bars in a Bar Chart
typedef enum {
CFXRectangle,
CFXCylinder,
CFXCone,
CFXPyramid
} CFXBarShape;
Constants
CFXRectangle- Sets the Bar shape to a Rectangle (Default).
CFXCylinder- Sets the Bar shape to a Cylinder.
CFXCone- Sets the Bar shape to a Cone.
CFXPyramid- Sets the Bar shape to a Pyramid.
Declared In
chartfx.h
CFXFillMode
Defines color scheme in the chart.
typedef enum {
CFXSolid,
CFXMonochrome,
CFXPattern,
CFXGradient
} CFXFillMode;
Constants
CFXSolid- Use solid colors.
CFXMonochrome- Use Black & White patterns.
CFXPattern- Use colored patterns.
CFXGradient- Use Gradient when painting the chart series
Declared In
chartfx.h
CFXMarkerShape
Defines different shapes used to paint point markers in the chart.
typedef enum {
CFXNone,
CFXRect,
CFXCircle,
CFXTriangle,
CFXDiamond,
CFXMarble,
CFXHorizontalLine,
CFXVerticalLine,
CFXCross,
CFXInvertedTriangle,
CFXX,
CFXMany,
CFXPicture
} CFXMarkerShape;
Constants
CFXNone- Do not display point markers.
CFXRect- Displays a rectangle.
CFXCircle- Displays a circle.
CFXTriangle- Displays a triangle.
CFXDiamond- Displays a diamond.
CFXMarble- Displays a 3D marble.
CFXHorizontalLine- Displays a horizontal line.
CFXVerticalLine- Displays a vertical line.
CFXCross- Displays a cross.
CFXInvertedTriangle- Displays a rotated triangle.
CFXX- Displays an X.
CFXMany- Selects a combination of marker shapes.
CFXPicture- Displays a configured picture.
Declared In
chartfx.h
CFXMarkerStyle
Description goes here
typedef enum {
CFXDefault,
CFXAlternate
} CFXMarkerStyle;
Constants
Declared In
chartfx.h