AreaChart

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Contents:

Note: Both charts XdevAreaChart and XdevSteppedAreaChart have the same implementations. Only the names change, but the settings are identical.

Optimal data structure (database):

Category

Y-Axis

X-Axis

customers

2013

4500

customers

2014

9500

customers

2015

10850

…​

+

+

Sales

2013

1200

Sales

2014

8500

…​

+

+

Optimal object structure (Java)

public class AreaChartObject {
    private String category;
    private String y_axis;
    private Integer x_axis;

    public String getCategory() {
        return this.category;
    }

    public void setCategory(final String category) {
        this.category = category;
    }

    public String getY_axis() {
        return this.y_axis;
    }

    public void setY_axis(final String y_axis) {
        this.y_axis = y_axis;
    }

    public Integer getX_axis() {
        return this.x_axis;
    }

    public void setX_axis(final Integer x_axis) {
        this.x_axis = x_axis;
    }
}

Example: Filling the data

//Erstellen Model und hinzufügen der Kategorien
final ChartModel model = ChartModel.New()
    .addColumn(Column.New(Type.STRING, "year", "Jahr"))
    .addColumn(Column.New(Type.NUMBER, "sales", "Verkäufe"))
    .addColumn(Column.New(Type.NUMBER, "customer", "Kunden"));

//Füllen der Items
model.addRow("2013", "6500", 6500);
model.addRow("2014", "4321", 4321);
model.addRow("2015", "9460", 9460);
model.addRow("2016", "7450", 7450);

model.addRow("2013", "1500", 1500);
model.addRow("2014", "2850", 2850);
model.addRow("2015", "685", 685);
model.addRow("2016", "4850", 4850);

//Setzen des Models
areaChart.setModel(model);

API and methods:

Configuration lines and points

Properties

PointShape

The shape of individual data elements: 'circle', 'triangle', 'square', 'diamond', 'star', or 'polygon'.

areaChart.setPointShape(PointShape.New(PointShape.Type.CIRCLE));

For detailed information see: https://developers.google.com/chart/interactive/docs/points

PointSize

Diameter of displayed points in pixels. Use zero to hide all points. You can override values for individual series using the series property. If you’re using a trendline, the pointSize option will affect the width of the trendline unless you override it with the trendlines.n.pointsize option.

areaChart.setPointSize(5);

PointVisible

Determines whether points will be displayed. Set to false to hide all points.

areaChart.setPointsVisible(true);

LineDashStyle

The on-and-off pattern for dashed lines. For instance, [4, 4] will repeat 4-length dashes followed by 4-length gaps, and [5, 1, 3] will repeat a 5-length dash, a 1-length gap, a 3-length dash, a 5-length gap, a 1-length dash, and a 3-length gap. See Dashed Lines for more information.

areaChart.setLineDashStyle(Arrays.asList(4,4,4));

LineWidth

Data line width in pixels. Use zero to hide all lines and show only the points. You can override values for individual series using the series property.

areaChart.setLineWidth(5);

SelectionMode

When selectionMode is 'multiple', users may select multiple data points.

areaChart.setSelectionMode(SelectionMode.MULTIPLE);

Orientation

The orientation of the chart. When set to 'vertical', rotates the axes of the chart so that (for instance) a column chart becomes a bar chart, and an area chart grows rightward instead of up:

areaChart.setOrientation(Orientation.HORIZONTAL);

DataOpacity

The transparency of data points, with 1.0 being completely opaque and 0.0 fully transparent.

areaChart.setDataOpacity(0.8);