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fft.php
2.65 KB
cf76164e6
20190709
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<!DOCTYPE html>
<html>
<?php
require_once 'FFT.class.php';
$filename = "/home/pi/Desktop/vAlert/rec/20180118130646_1001[0001]_541.csv";
$row = 0;
$i = 0;
if (($handle = fopen($filename, "r")) !== FALSE) {
while (($data = fgetcsv($handle, 10000, ",")) !== FALSE) {
if($row == "2") $time = explode("e:",$data['0']);
//find RecordLength
if($row == "3") $sec = explode(":",$data['0']);
if($row >= "28"){
$array_z[] = $data['0'];
$array_x[] = $data['1'];
$array_y[] = $data['2'];
}
$row++;
}
}
foreach($array_x as $key=>$value){
$radial_x[]=$value;
}
$period = 512;
$fft = new FFT($period);
$divided = ($period/2)-1;
$fft_data_z = $fft->fft($radial_x);
$power = $fft->getAbsFFT($fft_data_z);
foreach($power as $key=>$value){
$vertical[]="{x:".$key.",y:".$value."}";
}
for($j=0;$j<=$divided;$j++){
$array_z[] = $power[$j];
}
print_r($vertical);
/*foreach($array_z as $key=>$value){
$vertical[]="{x:".$key.",y:".$value."}";
}*/
foreach($array_y as $key=>$value){
$transverse[]="{x:".$key.",y:".$value."}";
}
foreach($array_x as $key=>$value){
$radial[]="{x:".$key.",y:".$value."}";
}
?>
<head>
<script>
window.onload = function () {
var transverse = {
animationEnabled: true,
zoomEnabled: true,
title:{
text: "Transverse"
},
data: [{
type: "line",
dataPoints: [
<?php echo implode(",",$transverse); ?>
]
}],
axisY:{
includeZero: false
}
};
$("#chartContainer2").CanvasJSChart(transverse);
var radial = {
animationEnabled: true,
zoomEnabled: true,
title:{
text: "Radial"
},
data: [{
type: "line",
color: "#FF0000",
dataPoints: [
<?php echo implode(",",$radial); ?>
]
}],
axisY:{
includeZero: false
}
};
$("#chartContainer").CanvasJSChart(radial);
var vertical = {
animationEnabled: true,
zoomEnabled: true,
title:{
text: "Vertical"
},
data: [{
type: "line",
color: "#33FF33",
dataPoints: [
<?php echo implode(",",$vertical); ?>
]
}],
axisY:{
includeZero: false
}
};
$("#chartContainer1").CanvasJSChart(vertical);
}
</script>
<h1>StartTime : <?php echo $time['1'];?> Record Length(sec) : <?php echo $sec['1'];?></h1>
<div id="chartContainer2" style="height: 300px; width: 100%;"></div>
<div id="chartContainer" style="height: 300px; width: 100%;"></div>
<div id="chartContainer1" style="height: 300px; width: 100%;"></div>
<script src="https://canvasjs.com/assets/script/jquery-1.11.1.min.js"></script>
<script src="https://canvasjs.com/assets/script/jquery.canvasjs.min.js"></script>
</body>
</html>
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