Javascript 如何动态填充我的图表
请帮助我如何从数据库数据中动态填充此图表JS piechart,以便用piechart显示。我的意思是从我的数据库中获取一个查询,并将数据库提供的数据转换为与chartjs格式所需的数据兼容的数据。请帮帮我 我正在使用ajax从数据库中获取值:Javascript 如何动态填充我的图表,javascript,chart.js,pie-chart,adminlte,Javascript,Chart.js,Pie Chart,Adminlte,请帮助我如何从数据库数据中动态填充此图表JS piechart,以便用piechart显示。我的意思是从我的数据库中获取一个查询,并将数据库提供的数据转换为与chartjs格式所需的数据兼容的数据。请帮帮我 我正在使用ajax从数据库中获取值: function getpieclinic() { $.ajax({ url: siteurl+"patients_report/piedataclinic", type: "GET", dataType
function getpieclinic() {
$.ajax({
url: siteurl+"patients_report/piedataclinic",
type: "GET",
dataType: "JSON",
success:function(response) {
alert(response);
}
});
}
下面的代码有一个JSON对象值,该值包含以下查询结果(响应值):
以下是piechart示例中的数据:
var pieChartCanvas = $("#pieChart").get(0).getContext("2d");
var pieChart = new Chart(pieChartCanvas);
var PieData = [
{
value: 700,
color: "#f56954",
highlight: "#f56954",
label: "Chrome"
},
{
value: 500,
color: "#00a65a",
highlight: "#00a65a",
label: "IE"
},
{
value: 400,
color: "#f39c12",
highlight: "#f39c12",
label: "FireFox"
},
{
value: 600,
color: "#00c0ef",
highlight: "#00c0ef",
label: "Safari"
},
{
value: 300,
color: "#3c8dbc",
highlight: "#3c8dbc",
label: "Opera"
},
{
value: 100,
color: "#d2d6de",
highlight: "#d2d6de",
label: "Navigator"
}
];
var pieOptions = {
//Boolean - Whether we should show a stroke on each segment
segmentShowStroke: true,
//String - The colour of each segment stroke
segmentStrokeColor: "#fff",
//Number - The width of each segment stroke
segmentStrokeWidth: 2,
//Number - The percentage of the chart that we cut out of the middle
percentageInnerCutout: 50, // This is 0 for Pie charts
//Number - Amount of animation steps
animationSteps: 100,
//String - Animation easing effect
animationEasing: "easeOutBounce",
//Boolean - Whether we animate the rotation of the Doughnut
animateRotate: true,
//Boolean - Whether we animate scaling the Doughnut from the centre
animateScale: false,
//Boolean - whether to make the chart responsive to window resizing
responsive: true,
// Boolean - whether to maintain the starting aspect ratio or not when responsive, if set to false, will take up entire container
maintainAspectRatio: true,
//String - A legend template
legendTemplate: "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>"
};
//Create pie or douhnut chart
// You can switch between pie and douhnut using the method below.
pieChart.Doughnut(PieData, pieOptions);
var pieChartCanvas=$(“#pieChart”).get(0.getContext(“2d”);
var pieChart=新图表(pieChartCanvas);
变量数据=[
{
价值:700,
颜色:“f56954”,
亮点:“f56954”,
标签:“铬”
},
{
价值:500,
颜色:“00a65a”,
亮点:“00a65a”,
标签:“IE”
},
{
价值:400,
颜色:“f39c12”,
亮点:“f39c12”,
标签:“FireFox”
},
{
价值:600,
颜色:“00c0ef”,
亮点:“00c0ef”,
标签:“狩猎”
},
{
价值:300,
颜色:“3c8dbc”,
亮点:“3c8dbc”,
标签:“歌剧”
},
{
数值:100,
颜色:“d2d6de”,
亮点:“d2d6de”,
标签:“导航器”
}
];
变量选项={
//布尔-我们是否应该在每个线段上显示笔划
这是真的,
//字符串-每段笔划的颜色
segmentStrokeColor:#fff“,
//数字-每个线段笔划的宽度
分段行程宽度:2,
//数字-我们从中间剪下的图表百分比
percentageInnerCutout:50,//对于饼图,这是0
//Number-动画步数
动画步骤:100,
//字符串动画效果
动画化:“easeOutBounce”,
//布尔-是否设置圆环旋转的动画
动画片:对,
//布尔值-是否设置从中心缩放圆环的动画
动画缩放:错误,
//布尔值-是否使图表响应窗口大小调整
回答:是的,
//布尔值-响应时是否保持起始纵横比,如果设置为false,将占用整个容器
维护Aspectratio:是的,
//字符串-图例模板
legendTemplate:“
”
};
//创建饼图或双圆图
//您可以使用下面的方法在pie和douhnut之间切换。
pieChart.甜甜圈(PieData,pieOptions);
我认为您在为图表表单JSON创建数据方面遇到了困难。以下是解决方案:
您的JSON字符串:
$json = '[{"clinic_name":"Clinic 1","total_checked_up":"4"},{"clinic_name":"Clinic 2","total_checked_up":"0"},{"clinic_name":"Clinic 3","total_checked_up":"0"},{"clinic_name":"Clinic 4","total_checked_up":"0"}]';
首先将其转换为数组:
$array = json_decode($json);
声明空变量:
$string_array = '';
循环抛出数组:
foreach($array as $single_array){
$string_array[] = array(
'value'=>$single_array->total_checked_up,
'color'=>'#f56954',
'highlight'=>'#f56954',
'label'=>$single_array->clinic_name
);
}
再次将数组转换为JSON以获取所需数据:
var PieData = json_encode($string_array);
这就是您的数据的外观
[
{
"value": "4",
"color": "#f56954",
"highlight": "#f56954",
"label": "Clinic 1"
},
{
"value": "0",
"color": "#f56954",
"highlight": "#f56954",
"label": "Clinic 2"
},
{
"value": "0",
"color": "#f56954",
"highlight": "#f56954",
"label": "Clinic 3"
},
{
"value": "0",
"color": "#f56954",
"highlight": "#f56954",
"label": "Clinic 4"
}
]
我认为您在为图表表单JSON创建数据方面遇到了困难。以下是解决方案: 您的JSON字符串:
$json = '[{"clinic_name":"Clinic 1","total_checked_up":"4"},{"clinic_name":"Clinic 2","total_checked_up":"0"},{"clinic_name":"Clinic 3","total_checked_up":"0"},{"clinic_name":"Clinic 4","total_checked_up":"0"}]';
首先将其转换为数组:
$array = json_decode($json);
声明空变量:
$string_array = '';
循环抛出数组:
foreach($array as $single_array){
$string_array[] = array(
'value'=>$single_array->total_checked_up,
'color'=>'#f56954',
'highlight'=>'#f56954',
'label'=>$single_array->clinic_name
);
}
再次将数组转换为JSON以获取所需数据:
var PieData = json_encode($string_array);
这就是您的数据的外观
[
{
"value": "4",
"color": "#f56954",
"highlight": "#f56954",
"label": "Clinic 1"
},
{
"value": "0",
"color": "#f56954",
"highlight": "#f56954",
"label": "Clinic 2"
},
{
"value": "0",
"color": "#f56954",
"highlight": "#f56954",
"label": "Clinic 3"
},
{
"value": "0",
"color": "#f56954",
"highlight": "#f56954",
"label": "Clinic 4"
}
]
任何答案请告诉我需要它任何答案请告诉我需要它