Question

我正在使用python-visualization库来计算数据源。我试图将多个可视化文件放在一个页面中。两者都是折线图，数据来自每个可视化的单独URL。

<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript" src="/site_media/js/jquery-1.2.6.min.js"></script>

    <script type="text/javascript">
        google.load('visualization', '1', { packages: ['linechart'] });

    </script>
    <script type="text/javascript">
        var visualization1, visualization2;
        function drawVisualization1() {
            var query1 = new google.visualization.Query('/datasource1/');
            query1.send(handleQueryResponse1);
            var query2 = new google.visualization.Query('/datasource2/');
            query2.send(handleQueryResponse2);

        }
        function handleQueryResponse1(response) {
            if (response.isError()) {
                alert('Error in query: ' + response.getMessage() + ' ' + response.getDetailedMessage());
                return;
            }
            var data1 = response.getDataTable();
            visualization1 = new google.visualization.LineChart(document.getElementById('visualization1'));
            var options = {};

            options['width'] = 600;
            options['height'] = 200;


            visualization1.draw(data1, options);
        }
        function handleQueryResponse2(response) {
            if (response.isError()) {
                alert('Error in query: ' + response.getMessage() + ' ' + response.getDetailedMessage());
                return;
            }
            var data2 = response.getDataTable();
            visualization2 = new google.visualization.LineChart(document.getElementById('visualization2'));
            var options = {};


            options['width'] = 600;
            options['height'] = 200;


            visualization2.draw(data2, options);
        }
        google.setOnLoadCallback(drawVisualization1);

    </script>



<body>
    <div id="visualization1" class="span-15"><br /><br /></div>
    <div id="visualization2" class="span-15"><br /><br /></div>

</body>

数据源：

def datasource1(request):
    data = []
    description = {"col1": ("number", "col1"),"col2": ("number", "col2"),}            
    for i in range(datetime.today().hour + 1):
        data.append({"col1":datetime.today().hour,"col2":datetime.today().hour })
    data_table = gviz_api.DataTable(description)
    data_table.LoadData(data)
    return HttpResponse(data_table.ToJSonResponse(columns_order=( "col1","col2",)))



def datasource2(request):
    data = []
    description = {"col1": ("number", "col1"),"col2": ("number", "col2"),}            
    for i in range(datetime.today().hour + 1):
        data.append({"col1":datetime.today().hour,"col2":datetime.today().hour })
    data_table = gviz_api.DataTable(description)
    data_table.LoadData(data)
    return HttpResponse(data_table.ToJSonResponse(columns_order=( "col1","col2",)))

当我渲染页面时，只出现第一个可视化，第二个可视化永远不会出现。有人可以帮助我吗？

Answer 1

您可以尝试类似

的内容

function Charts(){
    var self = this;
    self.chart = [];
    self.settings = { width: 650, height: 250 };
    self.add = function(type, element, dataTable, options){
        self.chart.push({
            o: new google.visualization[type]($(element)[0]),
            data: dataTable,
            draw: function(){
                var settings = $.extend({}, self.settings, options);
                this.o.draw(this.data, settings);
            }
        });
        return self;
    };
    self.draw = function(){
        $.each(self.chart, function(i, chart){
            chart.draw();
        });
        return self;        
    };
}

然后

//var data1 = 'someDataTable',
//    data2 = 'anotherDataTable';

charts = new Charts();

var settings = {width:600, height:200 };

charts.add('LineChart', '#visualization1', settings, data1);
charts.add('LineChart', '#visualization2', settings, data2);

charts.draw();

抱歉，我没有测试过自己，只是觉得它可以帮到你。

我建议也是从Google jQuery加载。

google.load("jquery", "1.2.6");

希望它能帮助你:)。

Answer 2

也发生在我身上。解决方案是让服务器返回reqId参数。如果在同一页面上有两个可视化，则一个将具有reqId 0，另一个具有reqId 1.确保服务器在响应中适当地返回这些reqIds。

如果两个响应都返回'0'，那么只会呈现一个可视化（第一个）。

一页中有多个可视化

2 个答案: