使用 GD 绘制图表
就这样吧。
我想了很长时间，但还没有真正能够提出一个合适的方法来做到这一点。我还没有实现任何东西，因为我仍在设计这个东西。
我的想法是，我抓取一个网站的内部链接，我解决了这个问题，这很容易，但是在抓取之后，我最终得到一个包含大量链接的数组，以及这些特定链接在我抓取的网站上出现的次数（以及它们如何连接）。
有了这个巨大的数组，我想以某种方式绘制一个图表。假设我可以正确处理数据，这里真正的问题是如何使用 GD 库在图像中绘制它。
我想如果元素少于 12 个，我可以将它们对齐在一个单位圆上，将它们间隔为一个圆，然后相应地连接它们，因此最多 12 个元素应该不是问题，但如果元素超过 12 个，让它们像这样排列起来会很棒 http://nayena.com/stackoverflow/graph.png< /a> 或者好吧，这只是一个粗略的图，但我想这只是为了证明一点。
因此，我在这里寻求指导或技巧，以将数学简化为以良好的方式排列内容。
我以前制作过条形图，所以我对用 GD 做数学没什么经验。如果可能的话，我宁愿不使用某些绘图仪库 - 最后，它让我更好地理解事情应该如何。
Here it goes.
I have been thinking about this for a long time, and havent really been able to put up a proper way to do it yet. I havent implemented anything yet, as im still designing the thing.
The idea is that i crawl a website for internal links, i got this settled, its easy, but after the crawling, i end up with an array with lots of links, and how many times those particular link appears on the site that i crawled (and how they're connected).
With this huge array, i want to draw a graph somehow. Assuming i can handle the data correctly, the real question here is how i can draw this in a image by the use of the GD library.
I figured if theres less than 12 elements, i can align them up on a unit circle spacing them up as a circle and then connecting them accordingly, so anything up to 12 elements shouldn't be a problem, but if theres more than 12, it could be awesome getting them lined up like this http://nayena.com/stackoverflow/graph.png Or well, thats just a rough drawing, but i guess its just to prove a point.
So i'm here looking for guidance or tips towards getting the math down to getting the stuff lined up in a good way.
I have previously made bar-graphs, so i have little experience doing math with GD. If possible, id prefer not using some plotter-library - in the end, it gives me a better understanding on how things are supposed to be.
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
这是 CS/IS 的一个完整子领域，有专门讨论图形绘制主题的教科书、研究论文和研讨会。
你可以将整个职业生涯投入到如何绘制图表上。
This is a whole subfield of CS/IS, with textbooks, research papers and symposia devoted to the subject of graph drawing.
You could devote an entire career to how to plot a graph.