1.6.3. GanttChart

The GanttChart component allows you to create Gantt charts.

LIVE DEMO
gantt chart
Figure 4. GanttChart

XML name of the component: chart:ganttChart.

Elements of chart:ganttChart:

  • categoryAxis - an element that describes the category axis.

  • graph - an element that contains the collection of chart:graph elements; the graph is described by the chart:graph element.

    • the type attribute defines the type of the graph and can be: line, column, step line, smoothed line, OHLC and candlestick.

    • the valueField attribute defines a key from the list of key-value pairs of the datasource or a data provider.

  • valueAxis - value axis of the chart. If the chart data is date- or time-based, you can set the value axis type to date.

Attributes of chart:ganttChart:

  • segmentsField - segments field of the chart.

  • additionalSegmentFields - the list of additional segment fields that correspond to the entity attributes to be fetched from the data provider, similarly to the additionalFields attribute.

  • endField/endDateField - the end value or the end date of the chart.

  • startField/startDateField - the start value or the start date of the chart.

  • startDate - the chart start date, if the value axis type is date.

  • categoryField - the category field of the chart.

Data binding

You can assign a datasource of a CollectionDatasource type to the chart. In the example below the start and end attributes of an entity are set for the attributes startDateField and endDateField.

<chart:ganttChart id="ganttChart"
                  additionalSegmentFields="task"
                  balloonDateFormat="JJ:NN"
                  brightnessStep="7"
                  categoryField="category"
                  colorField="color"
                  columnWidth="0.5"
                  datasource="taskSpansDs"
                  endDateField="end"
                  height="100%"
                  marginRight="70"
                  period="DAYS"
                  rotate="true"
                  segmentsField="segments"
                  startDate="2016-01-01"
                  startDateField="start"
                  theme="LIGHT"
                  width="100%">
    <chart:graph balloonText="&lt;strong&gt;[[task]]&lt;/strong&gt;: [[open]] - [[value]]"
                 fillAlphas="1"
                 lineAlpha="1"
                 lineColor="WHITE"/>
    <chart:valueAxis type="DATE"/>
    <chart:valueScrollbar autoGridCount="true"
                          color="BLACK"/>
    <chart:chartCursor cursorAlpha="0"
                       cursorColor="#55bb76"
                       fullWidth="true"
                       valueLineAlpha="0.5"
                       valueBalloonsEnabled="false"
                       valueLineBalloonEnabled="true"
                       valueLineEnabled="true"
                       valueZoomable="true"
                       zoomable="false"/>
    <chart:export/>
</chart:ganttChart>
GanttChart event listeners:

  • AxisZoomListener - chart axis scaling.

  • CategoryItemClickListener - click on a category in the category axis.

  • ChartClickListener - click on the canvas.

  • ChartRightClickListener - right click on the canvas.

  • CursorPeriodSelectListener - selection of the display period with a cursor.

  • CursorZoomListener - scaling of the chart area with a cursor.

  • GraphClickListener - click on a graph.

  • GraphItemClickListener - click on a graph item.

  • GraphItemRightClickListener - right click on a graph item.

  • ZoomListener - scaling of the canvas.

For more details, see AmCharts documentation.