Mathematica GraphPlot 和 EdgeRenderingFunction
当我等待 排序时 最后，我想调整我正在处理的 Mathematica 图表的一部分。问题是节点位于边缘之上，我想知道是否有办法扭转这种情况。在图像中，您可以看到箭头未正确显示...
我正在使用自定义 VertexRenderingFunction 和 EdgeRenderingFunction 参数执行 GraphPlot[] 。它看起来像这样：
箭头在哪里？你能看到他们吗？你拿走了我的箭吗？ http://img816.imageshack.us/img816/9703/graphbadarrows.png
如您所见，如果箭头位于节点顶部，那就酷。有没有一种简单的方法可以欺骗它？
While I'm waiting for the sorting to finish, I would like to adjust a part of Mathematica graph I'm working on. The problem is that nodes are on top of edges, I wonder if there is a way to reverse that. In the image you can see that arrows are not showing proper...
I'm doing a GraphPlot[] with custom VertexRenderingFunction and EdgeRenderingFunction paramaters. It looks something like this:
As you can see, it would be as they say cool if the arrows were on top of the nodes. Is there an easy way to hax it in?
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评论（2）
我不知道是否有办法直接使用 GraphPlot 选项来执行此操作，但您可以直接操作 GraphPlot 生成的 Graphics 对象。例如，这是一个与您的特征相似的图表。
您可以检查 Graphics 基元和指令的结构，如下所示：
您可以看到箭头放置在顶点之前。只需按如下方式反转即可。
当然，您的 Graphics 对象可能具有不同的结构。
马克·麦克卢尔
I don't know if there is a way to do this directly with GraphPlot options or not but you could manipulate the Graphics object produced by GraphPlot directly. For example, here's a graph whose features are similar to yours.
You can examine the structure of the Graphics primitives and directives as follows:
You can see that the arrows are placed down before the vertices. Simply reverse this as follows.
Of course, your Graphics object will likely have a different structure.
Mark McClure
马克的答案完全符合您的要求——您可以编写自己的函数来自动执行反向操作。
一个不太直接的解决方案可能是将箭头从末端向后拉一点：
这也将减少节点处的拥塞。
Mark's answer does exactly what you asked for -- and you could write your own function that automates the Reverse.
A less direct solution might be to just draw the arrow heads back from the end a little:
This would also reduce the congestion at the nodes.