le doy en el boton ver grafico y no muestra el grafico
Publicado por Rey (74 intervenciones) el 02/02/2020 18:18:14
la grafica funciona pero le añadi un boton que cuando le de ver grafico lo muestre eso es para que no se recargue solo , sino al presionar el boton aparezca la grafica .
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<?php
/////////////////CONEXION A BASE DE DATOS////////////$mysqli = new mysqli("localhost", "root", "", "itic");
/* verificar la conexión */if (mysqli_connect_errno()) {
printf("Conexión fallida: %s\n", mysqli_connect_error());
exit();
}/////////CONSULTAS A DB ///////////$resTotal = $mysqli->query("SELECT * FROM alumnos");
$cnt=$resTotal->num_rows;
$resA1=$mysqli->query("SELECT * FROM alumnos where grupo='A100'");
$cntA1=$resA1->num_rows;
$totalA1=$cntA1*100/$cnt;
$resA2=$mysqli->query("SELECT * FROM alumnos where grupo='A200'");
$cntA2=$resA2->num_rows;
$totalA2=$cntA2*100/$cnt;
$resB1=$mysqli->query("SELECT * FROM alumnos where grupo='B100'");
$cntB1=$resB1->num_rows;
$totalB1=$cntB1*100/$cnt;
$resB2=$mysqli->query("SELECT * FROM alumnos where grupo='B200'");
$cntB2=$resB2->num_rows;
$totalB2=$cntB2*100/$cnt;
$resC1=$mysqli->query("SELECT * FROM alumnos where grupo='C100'");
$cntC1=$resC1->num_rows;
$totalC1=$cntC1*100/$cnt;
$resC2=$mysqli->query("SELECT * FROM alumnos where grupo='C200'");
$cntC2=$resC2->num_rows;
$totalC2=$cntC2*100/$cnt;
while ($filaA1 = $resA1->fetch_array()) {
$A1 = "{ name:'" .$filaA1['grupo']. "', y:" .$totalA1. "},";
}while ($filaA2 = $resA2->fetch_array()) {
$A2 = "{ name:'" .$filaA2['grupo']. "', y:" .$totalA2. "},";
}while ($filaB1 = $resB1->fetch_array()) {
$B1 = "{ name:'" .$filaB1['grupo']. "', y:" .$totalB1. "},";
}while ($filaB2 = $resB2->fetch_array()) {
$B2 = "{ name:'" .$filaB2['grupo']. "', y:" .$totalB2. "},";
}while ($filaC1 = $resC1->fetch_array()) {
$C1 = "{ name:'" .$filaC1['grupo']. "', y:" .$totalC1. "},";
}while ($filaC2 = $resC2->fetch_array()) {
$C2 = "{ name:'" .$filaC2['grupo']. "', y:" .$totalC2. "},";
}?>
<html lang="es">
<head>
<title>Highcharts PASTEL</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>
<script type="text/javascript">
function recarga()
{var options = {
chart: {
renderTo: 'container',
plotBackgroundColor: null,
plotBorderWidth: null,
plotShadow: false,
type: 'pie'
},
title: {
text: 'Browser market shares in January, 2018'
},
tooltip: {
pointFormat: '{series.name}: <b>{point.percentage:.1f}%</b>'
},
plotOptions: {
pie: {
allowPointSelect: true,
cursor: 'pointer',
dataLabels: {
enabled: true,
format: '<b>{point.name}</b>: {point.percentage:.1f} %'
} }},
series: [{
name: 'Brands',
colorByPoint: true,
data: [
<?php
echo $A1;
echo $A2;
echo $B1;
echo $B2;
echo $C1;
echo $C2;
?>
]}]
}</script>
</head>
<body>
<header>
<div class="alert alert-info">
<h2>Grafica de Pastel con Highcharts desde BD</h2>
</div>
</header>
<input type="button" id="btn_genera" onclick="javascript: recarga()" value="Ver gráfico" />
<br/>
<div id="container" style="min-width: 310px; height: 400px; max-width: 600px; margin:0 auto"></div>
</body>
</html>
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