InfoVis 和 Rails

发布于 2024-10-13 00:00:56 字数 3870 浏览 6 评论 0原文

我打算向 JavaScript InfoVis Toolkit Google Group 提出这个问题，但在等待该成员资格获得批准时，我想我应该在这里提出这个问题。

我正在开发一个 Rails 应用程序，需要添加数据可视化（以及通过该可视化进行操作）。

我进行了一些搜索并找到了 JavaScript InfoVis Toolkit。这些演示对我来说非常有吸引力，也是我正在寻找的。

我试着慢慢开始，因为我还比较新。我已经尝试了无数次代码迭代，但均无济于事。这似乎是我能做的最好的事情：

#HTML source
<!DOCTYPE html>
<html>
<head>
  <title>Special</title>
  <link href="/stylesheets/BarChart.css?1281492364" media="screen" rel="stylesheet" type="text/css" />
  <link href="/stylesheets/fileuploader.css?1287396350" media="screen" rel="stylesheet" type="text/css" />
  <script src="/javascripts/prototype.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/effects.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/dragdrop.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/controls.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/rails.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/fileuploader.js?1287396350" type="text/javascript"></script>
  <script src="/javascripts/info-vis.js?1295643295" type="text/javascript"></script>
  <script src="/javascripts/jit.js?1281492366" type="text/javascript"></script>
  <script src="/javascripts/application.js?1295548407" type="text/javascript"></script>
  <meta name="csrf-param" content="authenticity_token"/>
  <meta name="csrf-token" content="1yF3pZmI7eUDbIipP66exagwkAGljlU0LlCjaW+ZoaI="/>
</head>
<body onload="init();">

<a href="/">Home</a> | <a href="/mailing_lists/list">List Overview</a><br>


<div id="infovis">
</div>

</body>
</html>

这是我的 JavaScript 文件：

#info-vis.js
    var init = function() {
    var json = {
        'label': ['label A', 'label B', 'label C', 'label D'],
        'values': [
            {
                'label': 'date A',
                'values': [20, 40, 15, 5]
            },
            {
                'label': 'date B',
                'values': [30, 10, 45, 10]
            },
            {
                'label': 'date E',
                'values': [38, 20, 35, 17]
            },
            {
                'label': 'date F',
                'values': [58, 10, 35, 32]
            },
            {
                'label': 'date D',
                'values': [55, 60, 34, 38]
            },
            {
                'label': 'date C',
                'values': [26, 40, 25, 40]
            }]

    };

    var barChart= new $jit.BarChart({
        injectInto: "infovis",
        width: 900,
        height: 500,
        backgroundColor: "#222",
        animate: true,
        barsOffset: 10,
        type: 'stacked:gradient'
    });

    barChart.loadJSON(json);

};

所以我想做的就是制作一个简单的条形图示例。

这是页面完全显示后 Web 检查器（在 Safari 中）显示的相关部分load:

#DOM Inspection
<div id="infovis">
  <div id="infovis-canvaswidget" style="position: relative; width: 800px; height: 0px; ">
    <canvas id="infovis-canvas" width="800" height="0" style="position: absolute; top: 0px; left 0px; width:800px; height: 0px; ">
    <div id="infovis-label" style="overflow-x: visible; overflow-y: visible; position: absolute; top: 0px; left: 0px; width: 800px; height: 0px; "></div>
  </div>
</div>
<div style="visibility: hidden; position: absolute; width: auto; height: auto; " class="jit-autoadjust-label"></div>

那么，我看到的是画布元素正在被注入，但高度为 0px，这就是为什么我看不到

演示的 DOM 时， < 的内容唯一区别是高度。

;div id="infovis"> 看起来与我的非常相似......我看到的

原文

I'm going to pose this question to the JavaScript InfoVis Toolkit Google Group, but while I'm waiting for that membership to be approved, I thought I'd pose it here.

I'm developing a Rails app and am in need of adding data visualization (and manipulation via that visualization).

I've done some searching and have come accross the JavaScript InfoVis Toolkit. The demos are very appealing to me and are what I'm looking for.

I'm trying to start slow since I'm still relatively new. I've tried numerous iterations of code all to no avail. This seems to be the best I can do:

#HTML source
<!DOCTYPE html>
<html>
<head>
  <title>Special</title>
  <link href="/stylesheets/BarChart.css?1281492364" media="screen" rel="stylesheet" type="text/css" />
  <link href="/stylesheets/fileuploader.css?1287396350" media="screen" rel="stylesheet" type="text/css" />
  <script src="/javascripts/prototype.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/effects.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/dragdrop.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/controls.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/rails.js?1291059294" type="text/javascript"></script>
  <script src="/javascripts/fileuploader.js?1287396350" type="text/javascript"></script>
  <script src="/javascripts/info-vis.js?1295643295" type="text/javascript"></script>
  <script src="/javascripts/jit.js?1281492366" type="text/javascript"></script>
  <script src="/javascripts/application.js?1295548407" type="text/javascript"></script>
  <meta name="csrf-param" content="authenticity_token"/>
  <meta name="csrf-token" content="1yF3pZmI7eUDbIipP66exagwkAGljlU0LlCjaW+ZoaI="/>
</head>
<body onload="init();">

<a href="/">Home</a> | <a href="/mailing_lists/list">List Overview</a><br>


<div id="infovis">
</div>

</body>
</html>

Here's my JavaScript file:

#info-vis.js
    var init = function() {
    var json = {
        'label': ['label A', 'label B', 'label C', 'label D'],
        'values': [
            {
                'label': 'date A',
                'values': [20, 40, 15, 5]
            },
            {
                'label': 'date B',
                'values': [30, 10, 45, 10]
            },
            {
                'label': 'date E',
                'values': [38, 20, 35, 17]
            },
            {
                'label': 'date F',
                'values': [58, 10, 35, 32]
            },
            {
                'label': 'date D',
                'values': [55, 60, 34, 38]
            },
            {
                'label': 'date C',
                'values': [26, 40, 25, 40]
            }]

    };

    var barChart= new $jit.BarChart({
        injectInto: "infovis",
        width: 900,
        height: 500,
        backgroundColor: "#222",
        animate: true,
        barsOffset: 10,
        type: 'stacked:gradient'
    });

    barChart.loadJSON(json);

};

So all I"m trying to do is make a simple bar chart example.

Here's the relevant part of what the Web Inspector (in Safari) shows after the page has fully loaded:

#DOM Inspection
<div id="infovis">
  <div id="infovis-canvaswidget" style="position: relative; width: 800px; height: 0px; ">
    <canvas id="infovis-canvas" width="800" height="0" style="position: absolute; top: 0px; left 0px; width:800px; height: 0px; ">
    <div id="infovis-label" style="overflow-x: visible; overflow-y: visible; position: absolute; top: 0px; left: 0px; width: 800px; height: 0px; "></div>
  </div>
</div>
<div style="visibility: hidden; position: absolute; width: auto; height: auto; " class="jit-autoadjust-label"></div>

So, what I'm seeing is that the canvas element is being injected but with a height of 0px and that's why I'm not seeing it?

When I look at the DOM of the demo, the contents of <div id="infovis"> looks very similar to mine...the only difference I see is in the height.

Any insights would be very much appreciated!

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