标签：java swing graph-visualization swingx prefuse
我想使用Prefuse来可视化图形.我跟着他们的tutorial并尝试了他们的示例应用程序.它的源代码可以在here找到
但是,即使我只是复制完整代码,结果图也不会显示在教程中.只有一半可见,卡在JPanel的左上角.它的某些部分缺失,因为它们必须在面板外显示.
我尝试了一些自己的图表,但我仍然遇到同样的现象.
我想这不是预期的行为,但我不知道在哪里寻找问题.我不知道这是Swing(x)还是prefuse或者……的问题？
更新：
这是修改后的代码.我没有从示例中做太多改变,只添加了trashgod建议的内容.
package visualise;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import prefuse.Constants;
import prefuse.Display;
import prefuse.Visualization;
import prefuse.action.ActionList;
import prefuse.action.RepaintAction;
import prefuse.action.assignment.ColorAction;
import prefuse.action.assignment.DataColorAction;
import prefuse.action.layout.graph.ForceDirectedLayout;
import prefuse.activity.Activity;
import prefuse.controls.DragControl;
import prefuse.controls.PanControl;
import prefuse.controls.ZoomControl;
import prefuse.data.Graph;
import prefuse.data.io.DataIOException;
import prefuse.data.io.GraphMLReader;
import prefuse.render.DefaultRendererFactory;
import prefuse.render.LabelRenderer;
import prefuse.util.ColorLib;
import prefuse.visual.VisualItem;
public class PrefuseExample {
public static void main(String[] argv) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
// -- 1. load the data ------------------------------------------------
// load the socialnet.xml file. it is assumed that the file can be
// found at the root of the java classpath
Graph graph = null;
try {
graph = new GraphMLReader().readGraph("../../resources/visualisation/prefuse/Prefuse-master/data/socialnet.xml");
} catch ( DataIOException e ) {
e.printStackTrace();
System.err.println("Error loading graph. Exiting...");
System.exit(1);
}
// -- 2. the visualization --------------------------------------------
// add the graph to the visualization as the data group "graph"
// nodes and edges are accessible as "graph.nodes" and "graph.edges"
Visualization vis = new Visualization();
vis.add("graph", graph);
vis.setInteractive("graph.edges", null, false);
// -- 3. the renderers and renderer factory ---------------------------
// draw the "name" label for NodeItems
LabelRenderer r = new LabelRenderer("name");
r.setRoundedCorner(8, 8); // round the corners
// create a new default renderer factory
// return our name label renderer as the default for all non-EdgeItems
// includes straight line edges for EdgeItems by default
vis.setRendererFactory(new DefaultRendererFactory(r));
// -- 4. the processing actions ---------------------------------------
// create our nominal color palette
// pink for females, baby blue for males
int[] palette = new int[] {
ColorLib.rgb(255,180,180), ColorLib.rgb(190,190,255)
};
// map nominal data values to colors using our provided palette
DataColorAction fill = new DataColorAction("graph.nodes", "gender",
Constants.NOMINAL, VisualItem.FILLCOLOR, palette);
// use black for node text
ColorAction text = new ColorAction("graph.nodes",
VisualItem.TEXTCOLOR, ColorLib.gray(0));
// use light grey for edges
ColorAction edges = new ColorAction("graph.edges",
VisualItem.STROKECOLOR, ColorLib.gray(200));
// create an action list containing all color assignments
ActionList color = new ActionList();
color.add(fill);
color.add(text);
color.add(edges);
// create an action list with an animated layout
ActionList layout = new ActionList(Activity.INFINITY);
layout.add(new ForceDirectedLayout("graph"));
layout.add(new RepaintAction());
// add the actions to the visualization
vis.putAction("color", color);
vis.putAction("layout", layout);
// -- 5. the display and interactive controls -------------------------
Display d = new Display(vis);
d.setSize(720, 500); // set display size
// drag individual items around
d.addControlListener(new DragControl());
// pan with left-click drag on background
d.addControlListener(new PanControl());
// zoom with right-click drag
d.addControlListener(new ZoomControl());
// -- 6. launch the visualization -------------------------------------
// create a new window to hold the visualization
JFrame frame = new JFrame("prefuse example");
// ensure application exits when window is closed
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(d);
frame.pack(); // layout components in window
frame.setVisible(true); // show the window
// assign the colors
vis.run("color");
// start up the animated layout
vis.run("layout");
}
});
}
}
解决方法:
我是Prefuse的新手,但是许多常见错误都可能导致观察到的问题.看着example,
>正如here所讨论的,当你真正想要覆盖getPreferredSize()时,不要在Display上使用setSize().
>应仅在event dispatch thread上构造和操作Swing GUI对象.
>初始聚类是图形原点落在显示组件左上角(0,0)处的人工制品.选择了首选尺寸后,可以将()平移到中心.
private static final int W = 640;
private static final int H = 480;
…
Display d = new Display(vis) {
@Override
public Dimension getPreferredSize() {
return new Dimension(W, H);
}
};
d.pan(W / 2, H / 2);
标签：java,swing,graph-visualization,swingx,prefuse 来源： https://codeday.me/bug/20190623/1274095.html
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