我正在努力研究如何根据我的数据制作图表,这是一个例子。
带有虚拟数据的我的图表应如下所示:
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Month', 'Margarita Murphy', 'Lora Gonzales', 'Mario Moran', 'Wefico Local Faire', 'Zegko Collection', 'Saxux Program for Youth', 'Test New location venue'],
['4/12', 9, 74, 10, 8, 93, 33, 90],
['5/12', 10, 168, 0, 10, 198, 108, 154],
['6/12', 9, 174, 12, 12, 165, 96, 261],
['7/12', 12, 288, 8, 36, 180, 264, 140],
['8/12', 40, 275, 15, 30, 275, 395, 170],
['9/12', 54, 534, 30, 48, 240, 246, 552],
['10/12', 28, 518, 63, 28, 182, 672, 98],
['11/12', 56, 520, 8, 64, 424, 568, 704],
['12/12', 45, 675, 9, 63, 864, 567, 756],
['1/13', 90, 570, 40, 70, 350, 510, 150],
['2/13', 55, 946, 110, 55, 253, 429, 88],
['3/13', 96, 684, 12, 96, 528, 1140, 468],
['4/13', 52, 832, 104, 130, 1261, 1235, 663],
['5/13', 28, 756, 70, 70, 1050, 910, 728],
['6/13', 105, 930, 15, 60, 1440, 660, 690],
['7/13', 144, 1600, 96, 64, 1312, 1488, 1120],
]);
因此,您可以看到它有一个项目列表,每月有多少视图可以追溯到时间。
我遇到的问题是,当我从MySQL获取数据时,我想循环查看视图,这些视图将在列中垂直向下,而不是交叉。我将如何让它像这样横向移动:
['4/12', item1.views, item2.view]
['5/12', item1.views, item2.view]
我对此感到非常困惑......
示例数据
-------------------
|date|views|ref_id|
|----|-----|------|
|4/12|123 |2 |
|5/12|526 |7 |
|6/12|2 |1 |
|7/12|46 |3 |
-------------------
修改
首先将日期设置为变量,然后循环处理所有内容并将数据添加到正确的数据中?
$month4_12 = "['4/12', ";
$month5_12 = "['5/12', ";
foreach($views_data as $data){
${"month_$data->date"} .= $data->views . ', ';
}
$month4_12 .= "],";
$month5_12 .= "],";
EDIT2:
所以这就是我现在所拥有的,它有一些问题但是,如果视图表不包含记录,它不算数,因为它只会在数据库中找到它...它没有明显的不起作用,因为与标题相比,它没有正确的列数。
// Get views for chart
$views_data = $this->content_model->get_chart_view_data();
// First make the months
$month = 1;
while($month <= 16){
$month_text = date('d/m/y');
$month_text = strtotime($month_text . ' -'.$month.' months');
$month_text_display = date('n/y', $month_text);
$month_text_variable = str_replace('/', '_', $month_text_display);
${"month_$month_text_variable"} = "['".$month_text_display."', ";
// Now add the data
foreach($views_data as $row){
${"month_$month_text_variable"} .= $row->views . ', ';
}
${"month_$month_text_variable"} = rtrim(${"month_$month_text_variable"}, ", ");
// Finish the lines
${"month_$month_text_variable"} .= "],\n";
$month++;
}
// Now join the lot!
$month = 1;
$chart_data = '';
while($month <= 16){
$month_text = date('d/m/y');
$month_text = strtotime($month_text . ' -'.$month.' months');
$month_text_display = date('n/y', $month_text);
$month_text_variable = str_replace('/', '_', $month_text_display);
$chart_data .= ${"month_$month_text_variable"};
$month++;
}
$data['chart_data'] = rtrim($chart_data, ",\n");
echo $data['chart_data'];
这给出了输出:
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Month', 'Margarita Murphy', 'Lora Gonzales', 'Mario Moran', 'Wefico Local Faire', 'Zegko Collection', 'Saxux Program for Youth', 'Test New location venue'],
['7/13', 2, 1, 1],
['6/13', 2, 1, 1],
['5/13', 2, 1, 1],
['4/13', 2, 1, 1],
['3/13', 2, 1, 1],
['2/13', 2, 1, 1],
['1/13', 2, 1, 1],
['12/12', 2, 1, 1],
['11/12', 2, 1, 1],
['10/12', 2, 1, 1],
['9/12', 2, 1, 1],
['8/12', 2, 1, 1],
['7/12', 2, 1, 1],
['6/12', 2, 1, 1],
['5/12', 2, 1, 1],
['4/12', 2, 1, 1]
]);
编辑3
继承人如何将数据存储在数据库中,你可以看到没有视图的一天根本没有记录
答案 0 :(得分:2)
您需要在SQL查询中透视数据。由于MySQL本身不支持枢轴,你必须作弊。最终输出中的每个旋转列都将采用以下格式:
IF(ref_id = <this column's reference id>, views, 0) AS <column name>
然后按日期列分组,如下所示:
SELECT
data,
IF(ref_id = 327, views, 0) AS column_327,
IF(ref_id = 329, views, 0) AS column_329,
// etc...
FROM <table name>
WHERE <conditions>
GROUP BY date
然后,您可以迭代输出以构建DataTable对象。
如果你没有提前知道所有的ref_id值(或者有很多),那么你可以查询获取ref_id的列表并以编程方式构建查询:
SELECT DISTINCT ref_id FROM <table name>