将多维数组传入 Google.visualization.arrayToDataTable

Question

我想使用 Google Chart 绘制烛台图，我有一个多数组数组调用 chartdata 但我未能将多数组数组传递到 google.visualization.arrayToDataTable([chartdata],true)并给出错误Last domain does not have enough data columns (missing 3)

应该是这样的var data = google.visualization.arrayToDataTable([ ['2022-05-25 12:00',12,864,889,76], ['2022-05-25 13:00',765,45,97,82] ],true);

html

<div >
        <div>
            <button>OK</button>
            <table id="haha">
                <thead>
                    <tr>
                        <td>date</td>
                        <td>open</td>
                        <td>close</td>
                        <td>high</td>
                        <td>low</td>
                        <td>change</td>
                    </tr>
                </thead>
                <tr class="data">
                    <td class="date_">2022-05-25 12:00</td>
                    <td class="open">12</td>
                    <td class="close">864</td>
                    <td class="high">889</td>
                    <td class="low">76</td>
                    <td class="change">66</td>
                </tr>
                <tr class="data">
                    <td class="date_">2022-05-25 13:00</td>
                    <td class="open">765</td>
                    <td class="close">45</td>
                    <td class="high">97</td>
                    <td class="low">82</td>
                    <td class="change">613</td>
                </tr>
            </table>
        </div>
    </div>
    <div id="chart" style="width: 900px; height: 500px;"></div>

js

$(document).ready(function(){
        $(document).on("click", "button", function(){

            var parenthis = this.parentElement;
            var tr = parenthis.querySelectorAll('.data');

            var chartdata = [];

            for(var x=0 ; x < tr.length ; x++){

                var subdata = [];
                var array=['date_','open','close','high','low'];

                for(var y=0 ; y < array.length ; y++){
                    
            
                    var class_table = parenthis.querySelectorAll("[class=" + CSS.escape(array[y]) + "]"); 

                    if(y==0){
                        subdata.push(class_table[x].innerHTML);
                    }
                    else if(y==4){
                        subdata.push(parseFloat(class_table[x].innerHTML));
                        chartdata.push(subdata);
                    }
                    else{
                        subdata.push(parseFloat(class_table[x].innerHTML))
                    }

                };                    
            };

            // candlestick chart 
            google.charts.load('current', {'packages':['corechart']});
            google.charts.setOnLoadCallback(drawChart);

            function drawChart(){

                // [[str,num/float,num/float,num/float,num/float],]
                var data = google.visualization.arrayToDataTable([chartdata],true);
                
                var options = {
                legend:'none',
                };

                var chart = new google.visualization.CandlestickChart(document.getElementById('chart'));
                chart.draw(data, options);
            };      
        })        
    });

Answer 1

在你的脚本中，做如下修改怎么样？

发件人：

var data = google.visualization.arrayToDataTable([chartdata],true);

收件人：

var data = google.visualization.arrayToDataTable(chartdata,true);

• 在您的脚本中，chartdata 是二维数组。所以，我想这也许可以直接使用。

参考：

• arrayToDataTable()