我有一些图表,我想使用JUNG2来显示,如下图所示。
我玩过 JUNG2 的一些布局,但我总是得到这样的图像:
是否可以在不编写新布局的情况下按我的意愿布局图表?
提前致谢
德米特里
UPD:这是我用于可视化图表的代码:
private Embedded createSampleGraph() {
Embedded imageComponent = null;
try {
final DocumentBuilderFactory docBuilderFactory =
DocumentBuilderFactory
.newInstance();
final DocumentBuilder docBuilder =
docBuilderFactory.newDocumentBuilder();
final Document document = docBuilder.newDocument();
final Element svgelem = document.createElement("svg");
document.appendChild(svgelem);
final SVGGraphics2D graphic2d = new SVGGraphics2D(document);
final Graph<String, String> graph = createGraph();
final VisualizationImageServer<String, String> server =
createServer(graph);
server.printAll(graphic2d);
final Element el = graphic2d.getRoot();
el.setAttributeNS(null, "viewBox", "0 0 350 350");
el.setAttributeNS(null, "style", "width:100%;height:100%;");
final ByteArrayOutputStream bout = new ByteArrayOutputStream();
final Writer out = new OutputStreamWriter(bout, "UTF-8");
graphic2d.stream(el, out);
final JungResource source = new JungResource(bout);
TPTApplication.getCurrentApplication().addResource(source);
imageComponent = new Embedded("", source);
imageComponent.setWidth(DEFAULT_WIDTH_PIXELS, UNITS_PIXELS);
imageComponent.setHeight(DEFAULT_HEIGHT_PIXELS, UNITS_PIXELS);
imageComponent.setMimeType("image/svg+xml");
addComponent(imageComponent);
} catch (final UnsupportedEncodingException exception) {
LOGGER.error(ErrorCodes.M_001_UNSUPPORTED_ENCONDING, exception);
} catch (final SVGGraphics2DIOException exception) {
LOGGER.error(ErrorCodes.M_002_SVG_GRAPHICS_2D_IO, exception);
} catch (final ParserConfigurationException exception) {
LOGGER.error(ErrorCodes.M_003_PARSER_CONFIGURATION, exception);
}
return imageComponent;
}
private VisualizationImageServer<String, String> createServer(
final Graph<String, String> aGraph) {
final Layout<String, String> layout = new FRLayout<String, String>(
aGraph);
layout.setSize(new Dimension(300, 300));
final VisualizationImageServer<String, String> vv =
new VisualizationImageServer<String, String>(
layout, new Dimension(350, 350));
vv.getRenderContext().setVertexLabelTransformer(
new ToStringLabeller<String>());
return vv;
}
private Graph<String, String> createGraph() {
final Graph<String, String> graph =
new DirectedSparseMultigraph<String, String>();
final String vertex1 = "IE";
final String vertex2 = "P1";
final String vertex3 = "P2";
final String vertex4 = "P3";
final String vertex5 = "FE";
graph.addVertex(vertex1);
graph.addVertex(vertex2);
graph.addVertex(vertex3);
graph.addVertex(vertex4);
graph.addVertex(vertex5);
graph.addEdge("1", vertex1, vertex2, EdgeType.DIRECTED);
graph.addEdge("2", vertex2, vertex3, EdgeType.DIRECTED);
graph.addEdge("3", vertex3, vertex5, EdgeType.DIRECTED);
graph.addEdge("4", vertex1, vertex4, EdgeType.DIRECTED);
graph.addEdge("5", vertex4, vertex5, EdgeType.DIRECTED);
return graph;
}
2011 年 3 月 17 日更新
现在我可以画出这样的图表: