React Anotaciones de datos de gráficos
En el gráfico de React, las capas de anotación de datos le permiten anotar datos trazados en Gráfico de datos con líneas inclinadas, líneas verticales/horizontales (también conocidas como cortes de eje), franjas verticales/horizontales (dirigidas a ejes específicos), rectángulos e incluso paralelogramos (también conocidos como bandas). Con el enlace de datos compatible, puede crear tantas anotaciones como desee para personalizar sus gráficos. Además, puede combinar diferentes capas de anotación y puede superponer texto dentro del área de trazado para anotar eventos, patrones y regiones importantes en sus datos.
[!Note] These features are designed to support cartesian axes and does not currently support radius or angle axes.
Por ejemplo, puede anotar los precios de las acciones con eventos y patrones de acciones.
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React Data Annotation Slice Layer Example
In React, the link:{DataChartLink}.DataAnnotationSliceLayer.html[DataAnnotationSliceLayer] renders multiple vertical or horizontal lines that slice the chart at multiple values of an axis in the IgrDataChart component. This data annotation layer is often used to annotate important events (e.g. company quarter reports) on x-axis or important values on y-axis. Setting the TargetAxis property to y-axis will render data annotation layer as horizontal slices or setting TargetAxis property to x-axis will render data annotation layer as vertical slices. Similarly to all series, the DataAnnotationSliceLayer also supports data binding via the DataSource property that can be set to a collection of data items which should have at least 1 numeric data column mapped to the AnnotationValueMemberPath property.
Por ejemplo, puede usar DataAnnotationSliceLayer para anotar los precios de las acciones con eventos importantes, como la división de acciones y los informes de resultados de ganancias.
React Data Annotation Strip Layer Example
In React, the IgrDataAnnotationStripLayer renders multiple vertical or horizontal strips between 2 values on an axis in the IgrDataChart component. This data annotation layer can be used to annotate duration of events (e.g. stock market crash) on x-axis or important range of values on y-axis. Setting the TargetAxis property to y-axis will render data annotation layer as horizontal strips or setting TargetAxis property to x-axis will render data annotation layer as vertical strips. Similarly to all series, the IgrDataAnnotationStripLayer also supports data binding via the DataSource property that can be set to a collection of data items which should have at least 1 numeric data column mapped to the AnnotationValueMemberPath property.
For example, you can use IgrDataAnnotationStripLayer to annotate chart with stock market crashes and changes in federal interest rates.
React Data Annotation Line Layer Example
In React, IgrDataAnnotationLineLayer renders multiple lines between 2 points in plot area of the IgrDataChart component. This data annotation layer can be used to annotate stock chart with growth and decline in stock prices. Similarly to all series, the DataAnnotationLineLayer also supports data binding via the DataSource property that can be set to a collection of data items which should have at least 4 numeric data columns representing x/y coordinates of starting point and ending point of the lines. The starting points should be mapped using using StartValueXMemberPath and StartValueYMemberPath properties and the ending points should be mapped using EndValueXMemberPath and EndValueYMemberPath properties.
Por ejemplo, puede usar DataAnnotationLineLayer para anotar los patrones de crecimiento y disminución en los precios de las acciones y los máximos y mínimos de 52 semanas de los precios de las acciones en el eje Y.
React Data Annotation Rect Layer Example
In React, the IgrDataAnnotationRectLayer renders multiple rectangles defined by starting and ending points in plot area of the IgrDataChart component. This data annotation layer can be used to annotate region of plot area such as bearish patterns in stock prices. Similarly to all series, the DataAnnotationRectLayer also supports data binding via the DataSource property that can be set to a collection of data items which should have at least 4 numeric data columns representing x/y coordinates of starting point and ending point of the rectangles. The starting points should be mapped using using StartValueXMemberPath and StartValueYMemberPath properties and the ending points should be mapped using EndValueXMemberPath and EndValueYMemberPath properties.
Por ejemplo, puede usar DataAnnotationRectLayer para anotar patrones bajistas y brechas en los precios de las acciones en el eje Y.
React Data Annotation Band Layer Example
In React, the IgrDataAnnotationBandLayer renders multiple skewed rectangles (free-form parallelogram) between 2 points in plot area of the IgrDataChart component. This data annotation layer can be used to annotate range of growth and decline in stock prices. Similarly to all series, the DataAnnotationBandLayer also supports data binding via the DataSource property that can be set to a collection of data items which should have at least 4 numeric data columns representing x/y coordinates of starting point and ending point of the lines. The starting points should be mapped using StartValueXMemberPath and StartValueYMemberPath properties and the ending points should be mapped using EndValueXMemberPath and EndValueYMemberPath properties. In addition, you can specify thickness/size of the skewed rectangle by binding numeric data column to the AnnotationBreadthMemberPath property.
Por ejemplo, puede usar DataAnnotationBandLayer para anotar el rango de crecimiento en los precios de las acciones.
API References
La siguiente es una lista de miembros de API mencionados en las secciones anteriores:
TargetAxis: This property specifies which axis should have an enabled DataAnnotationBandLayer, DataAnnotationLineLayer, DataAnnotationRectLayer.DataSource: This property binds data to the annotation layer to provide the precise shape.StartValueXMemberPath: This property is a mapping to the name of the data column with x-positions for the start of the DataAnnotationBandLayer, DataAnnotationLineLayer, DataAnnotationRectLayer.StartValueYMemberPath: This property is a mapping to the name of data column with y-positions for the start of the DataAnnotationBandLayer, DataAnnotationLineLayer, DataAnnotationRectLayer.EndValueXMemberPath: This property is a mapping to the data column with x-positions for the end of the DataAnnotationBandLayer, DataAnnotationLineLayer, DataAnnotationRectLayer.EndValueYMemberPath: This property is a mapping to the data column with y-positions for end of the DataAnnotationBandLayer, DataAnnotationLineLayer, DataAnnotationRectLayer.StartLabelXMemberPath: This property is a mapping to the data column representing the overlay label for the starting position of the xAxis along the axis.StartLabelXDisplayMode|StartLabelYDisplayMode|EndLabelXDisplayMode|EndLabelYDisplayMode|CenterLabelXDisplayMode: These properties specify what should annotation labels display on starting, ending, or center of the annotation shape, e.g. mapped data value, mapped data label, axis value, or hide a given annotation label.StartLabelYMemberPath: This property is a mapping to the data column representing the axis label for the starting position ofIgrDataAnnotationBandLayer,IgrDataAnnotationLineLayer,IgrDataAnnotationRectLayeron the y-axis.EndLabelYMemberPath: This property is a mapping to the data column representing the axis label for the ending position ofIgrDataAnnotationBandLayer,IgrDataAnnotationLineLayer,IgrDataAnnotationRectLayeron the y-axis.