如何使用 GraphViz 生成多个级别（PHP 的 Image_Graphviz 接口）

发布于 2024-08-10 05:59:09 字数 993 浏览 4 评论 0原文

我正在尝试使用 PEAR 的 Image_GraphViz 生成下图。但是，它仅显示顶级节点（带有文本“0”）和直接位于顶级节点下方的子节点“1”、“2”、“3”和“4”。我错过了什么吗？

这是代码：

    $gv = new Image_GraphViz(true);

    $gv->addEdge(array('1', '2'));
    $gv->addEdge(array('2', '3'));
    $gv->addEdge(array('2', '4'));
    $gv->addEdge(array('3', '5'));
    $gv->addEdge(array('3', '6'));
    $gv->addEdge(array('3', '7'));
    $gv->addEdge(array('4', '5'));

    echo $gv->fetch('svg');

我尝试了以下操作，但这显然是错误的:)。

    $gv->addEdge(array('1', '2'));
    $gv->addEdge(array('1', '2', '3'));
    $gv->addEdge(array('1', '2', '4'));
    $gv->addEdge(array('1', '2', '3', '5'));
    $gv->addEdge(array('1', '2', '3', '6'));
    $gv->addEdge(array('1', '2', '3', '7'));
    $gv->addEdge(array('1', '2', '4', '5'));

我知道有两种方法可以达到 5。通过 (1, 2, 3, 5) 和/或 (1, 2, 4, 5)。

图像应该只显示指向 5 的两行。我很困惑，有什么建议吗？

原文

i'm trying to generate the following diagram using Image_GraphViz for PEAR. However It only shows a top-level node (with the text "0") and childnodes "1", "2", "3" and "4" directly under the top-node. Am I missing something?

This is the code:

    $gv = new Image_GraphViz(true);

    $gv->addEdge(array('1', '2'));
    $gv->addEdge(array('2', '3'));
    $gv->addEdge(array('2', '4'));
    $gv->addEdge(array('3', '5'));
    $gv->addEdge(array('3', '6'));
    $gv->addEdge(array('3', '7'));
    $gv->addEdge(array('4', '5'));

    echo $gv->fetch('svg');

I tried the following, but this is obviously wrong :).

    $gv->addEdge(array('1', '2'));
    $gv->addEdge(array('1', '2', '3'));
    $gv->addEdge(array('1', '2', '4'));
    $gv->addEdge(array('1', '2', '3', '5'));
    $gv->addEdge(array('1', '2', '3', '6'));
    $gv->addEdge(array('1', '2', '3', '7'));
    $gv->addEdge(array('1', '2', '4', '5'));

I understand there are two ways to get to 5. Through (1, 2, 3, 5) and/or (1, 2, 4, 5).

The image should just show two lines going to 5. I'm very confused, any suggestions?

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往日 2024-08-17 05:59:09

从文档来看，您似乎需要关联数组。你可以试试这个吗？

$gv = new Image_GraphViz(true);

// Notice the use of =>
$gv->addEdge(array('1' => '2'));
$gv->addEdge(array('2' => '3'));
$gv->addEdge(array('2' => '4'));
$gv->addEdge(array('3' => '5'));
$gv->addEdge(array('3' => '6'));
$gv->addEdge(array('3' => '7'));
$gv->addEdge(array('4' => '5'));

echo $gv->fetch('svg');

From the documentation it seems you need associative arrays. Can you try this instead?

$gv = new Image_GraphViz(true);

// Notice the use of =>
$gv->addEdge(array('1' => '2'));
$gv->addEdge(array('2' => '3'));
$gv->addEdge(array('2' => '4'));
$gv->addEdge(array('3' => '5'));
$gv->addEdge(array('3' => '6'));
$gv->addEdge(array('3' => '7'));
$gv->addEdge(array('4' => '5'));

echo $gv->fetch('svg');

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