聚合物1.0是否有现成的图表元素? [英] Polymer 1.0 Is there any ready made chart element?

问题描述

我想在我的Polymer 1.0应用程序中添加一个饼图.我在聚合物0.5上使用了chart-elements，但是当迁移到1.0时，它停止了工作！

I want to add a pie chart in my Polymer 1.0 application. I used chart-elements with Polymer 0.5, but when migrated to 1.0 it stopped working!

我还没有找到1.0版本的任何东西. 1.0完全有现成的图表元素吗?寻求专家帮助.

I did not find anything for 1.0 yet. Does 1.0 at all has a ready made chart element? Seeking for expert help.

提前谢谢.

编辑 根据Ben的建议，我尝试使用google-chart组件，这就是我所做的.但是该图表未呈现.

EDIT According to Ben's suggestion I tried with google-chart component and this is what I did. But the chart is not rendering.

步骤1:我使用bower install --save GoogleWebComponents/google-chart

步骤2:使用yo polymer:el custom-pie-chart创建了一个自定义元素，如下所示:

Step 2: Created a custom element using yo polymer:el custom-pie-chart which looks like this:

<dom-module id="custom-pie-chart">
    <style>
        :host
        {
            display: -webkit-flex;
            display: -ms-flex;
            display: flex;
            margin: 0;
            padding: 0;
            width: 400px;
            height: 300px;
        }
        #chartdiv
        {
            width: 100%;
        }
        google-chart
        {
            height: 300px;
            width: 50em;
        }
    </style>
    <template>
        <link rel="stylesheet" href="custom-pie-chart.css">
        <div id="chartdiv">
        <google-chart
            type='pie'
            options='{"title": "Distribution of days in 2001Q1"}'
            cols='[{"label":"Month", "type":"string"}, {"label":"Days", "type":"number"}]'
            rows='[["Jan", 31],["Feb", 28],["Mar", 31]]'>
        </google-chart>
        </div>
    </template>
</dom-module>
<script>
    (function () {
        Polymer({
            is: 'custom-pie-chart',
            ready: function () {

            }
        });
    })();
</script>

第3步:在elements.html

第4步:在我的index.html中添加了custom-pie-chart，如下所示:

Step 4: Added custom-pie-chart in my index.html as follows:

<post-card id="sales-info" title="Points from customer">
  <custom-pie-chart></custom-pie-chart>
</post-card>

但是图表未呈现.区域像这样空白:

But chart is not rendering. Area comes blank like this:

注意:控制台(Chrome)上也出现以下错误

NB: I am also getting the following error on console (Chrome)

Uncaught (in promise) TypeError: Request method 'POST' is unsupported
at TypeError (native)
at http://localhost:3000/bower_components/sw-toolbox/sw-toolbox.js:20:430

我删除了google-chart的所有引用，以检查是否负责.但是它仍然出现.

I removed all references of google-chart to check whether this is responsible. But it still comes up.

我在做什么错?请帮忙！

What wrong I am doing? Please help!

推荐答案

这会导致错误:

rows='[["Jan", 31],["Feb", 28],["Mar", 31]]'

因为Polymer只识别rows='[[...]]'并认为它是数据绑定.两个空格应该可以解决问题:

because Polymer only recognizes rows='[[...]]' and thinks it is a data binding. Two spaces should solve the problem:

rows='[ ["Jan", 31],["Feb", 28],["Mar", 31] ]'

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