Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
A bit I wrote to visualize my weight.
<?php
/*
Copyright (C) 2010 John Hobbs
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
// Get the max days back we want to look.
$max_days = 7;
if( isset( $_REQUEST['days'] ) and ! empty( $_REQUEST['days'] ) )
$max_days = intval( $_REQUEST['days'] );
$i = 0;
$lines = array();
/*
This is a VERY EXACT DATA FORMAT.
One record per line, newest record on top (pre-pended)
A record looks like: 2010-06-29 200.0
Example:
2010-06-30 200.0
2010-06-29 202.6
2010-06-28 200.0
*/
$fh = fopen( 'data.txt', 'r' );
while( ! feof( $fh ) and ++$i <= $max_days ) {
$line = fgets( $fh );
if( empty( $line ) ) { continue; }
array_unshift( $lines, $line );
}
fclose( $fh );
?>
<html>
<head>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load( 'visualization', '1', { 'packages': [ 'corechart' ] } );
google.setOnLoadCallback( drawChart );
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn( 'string', 'Date' );
data.addColumn( 'number', 'Weight' );
data.addRows( <?php echo count( $lines ); ?> );
<?php
$i = 0;
foreach( $lines as $line ):
?>
data.setValue( <?php echo $i; ?>, 0, '<?php echo substr( $line, 0, 10 ); ?>' );
data.setValue( <?php echo $i; ?>, 1, <?php echo floatval( substr( $line, 11 ) ); ?> );
<?php
++$i;
endforeach;
?>
var chart = new google.visualization.LineChart( document.getElementById( 'chart_div' ) );
chart.draw( data, { width: 800, height: 600, title: 'Weight Over Time' } );
}
</script>
</head>
<body>
<div id="chart_div"></div>
</body>
</html>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.