Inhalt:
Optimale Datenstruktur (Datenbank)| Kategory | Wert |
|---|
| Bverages | 393 |
| Condiments | 507 |
| Confections | 386 |
Optimale Objektstruktur (Java)
| Code Block |
|---|
| language | java |
|---|
| theme | Eclipse |
|---|
| firstline | 1 |
|---|
| linenumbers | true |
|---|
|
public class PieChartObject {
private String category;
private Integer value;
public String getCategory() {
return this.category;
}
public void setCategory(final String category) {
this.category = category;
}
public Integer getValue() {
return this.value;
}
public void setValue(final Integer value) {
this.value = value;
}
} |
Beispiel: Füllen der Daten| Code Block |
|---|
| language | java |
|---|
| theme | Eclipse |
|---|
| firstline | 1 |
|---|
| linenumbers | true |
|---|
|
final ChartModel model = ChartModel.New()
.addColumn(Column.New(Type.STRING))
.addColumn(Column.New(Type.NUMBER));
model.addRow("Katze", 50);
model.addRow("Hund", 25);
model.addRow("Schlange", 25);
this.pieChart.setModel(model); |
...
| Code Block |
|---|
| language | java |
|---|
| theme | Eclipse |
|---|
| firstline | 1 |
|---|
| linenumbers | true |
|---|
|
final ChartModel model = ChartModel.New()
.addColumn(Column.New(Type.STRING))
.addColumn(Column.New(Type.NUMBER));
new ProductDAO().getProductsByCategoryForChart().forEach(p -> {
model.addRow(p.getCategory().getCategoryname(), (int)p.getAmount());
});
chart.setModel(model);
|
API und Methoden:
Konfiguration "XdevPieChartConfig" allgemein:
| Properties |
|
|---|
| PieHole | If between 0 and 1, displays a donut chart. The hole with have a radius equal to number times the radius of the chart. | Code Block |
|---|
| pieChart.setPieHole(0.5); |
|
| PieStartAngle | The angle, in degrees, to rotate the chart by. The default of 0 will orient the leftmost edge of the first slice directly up. | Code Block |
|---|
| pieChart.setPieStartAngle(60); |
|
| PieSliceBorderColor | The color of the slice borders. Only applicable when the chart is two-dimensional. | Code Block |
|---|
| pieChart.setPieSliceBorderColor("red"); |
|
| PieSliceText | The content of the text displayed on the slice. Can be one of the following: - 'percentage' - The percentage of the slice size out of the total.
- 'value' - The quantitative value of the slice.
- 'label' - The name of the slice.
'none' - No text is displayed | Code Block |
|---|
| pieChart.setPieSliceText(PieSliceText.PERCENTAGE); |
|
| SliceVisibilityThreshold | The fractional value of the pie, below which a slice will not show individually. All slices that have not passed this threshold will be combined to a single "Other" slice, whose size is the sum of all their sizes. Default is not to show individually any slice which is smaller than half a degree. | Code Block |
|---|
| pieChart.setSliceVisibilityThreshold(25); |
|
| Is3D | If true, displays a three-dimensional chart. | Code Block |
|---|
| pieChart.setIs3D(true); |
|