java - 在 Google App Engine 上呈现有向图(类似于 graphviz)的库

Question

我正在寻找可以将 Dot 语言中的图形呈现为图像文件的 Java 或 Python 库。问题是我需要一个可以在 Google App Engine 上使用的库。基本上我正在寻找一个可以将有向图的文本描述转换为图形图像的库。

例如:

隐藏这个边列表:

[A,B]
[B,C]
[A,C]
[C,D]

进入这张图片:

我使用了 Graphviz对于此示例，但我知道我无法将它与 Google App Engine 一起使用。

Answer 1

Canviz是您正在寻找的:它是一个用于将 Graphviz 图形绘制到 Web 浏览器 Canvas 的 JavaScript 库。它适用于 most browsers .

Using Canviz has advantages for your web application over generating and sending bitmapped images and imagemaps to the browser:

• The server only needs to have Graphviz generate xdot text; this is faster than generating bitmapped images.
• Only the xdot text needs to be transferred to the browser; this is smaller than binary image data, and, if the browser supports it (which most do), the text can be gzip- or bzip2-compressed.
• The web browser performs the drawing, not the server; this reduces server load.
• The user can resize the graph without needing to involve the server; this is faster than having the server draw and send the graph in a different size.

要查看它的实际效果，look here .