Hello,
can u guys help me out to figure out how to add range filter to my
candlestick chart?
it's really hard for me.
this is the code I used.
<?php
$servername = "127.0.0.1";
$username = "root";
$password = "";
$database = "stock";
$mysqli = new mysqli ($servername, $username, $password, $database);
if ($mysqli ->connect_error){
die("Connection failed:" .$mysqli->connect_error);
}
$query = "SELECT Date, Low, High, Open, Close FROM csv";
$qresult = $mysqli->query($query);
$results = array();
while($res= $qresult->fetch_assoc()){
$results[] = $res;
}
$candlestick_data = array();
foreach ($results as $result){
$candlestick_data[] = array($result['Date'], (float)$result['Low'],
(float)$result['High'], (float)$result['Open'], (float)$result['Close']);
}
$candlestick_data = json_encode($candlestick_data);
mysqli_free_result($qresult);
mysqli_close($mysqli);
$HTML=<<<XYZ
<script
src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js";
type="text/javascript"></script>
<script type="text/javascript"
src="https://www.gstatic.com/charts/loader.js";></script>
<script type="text/javascript">
google.charts.load("visualization","1", {'packages':["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Date');
data.addColumn('number', 'High');
data.addColumn('number', 'Low');
data.addColumn('number', 'Open');
data.addColumn('number', 'Close');
data.addRows({$candlestick_data}),true;
var options = {
width: 1200,
height: 300,
animation: {
duration: 1000,
easing: 'in'
},
hAxis: {viewWindow: {min:0, max:50}}
};
var chart = new
google.visualization.CandlestickChart(document.getElementById('candlestick_div'));
chart.draw(data, options);
}
</script>
<div id="candlestick_div" style="width: 2000px; height: 500px;"></div>
XYZ;
echo $HTML;
?>
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