[42] | 1 | <?php // content="text/plain; charset=utf-8" |
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| 2 | require_once ('../jpgraph.php'); |
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| 3 | require_once ('../jpgraph_line.php'); |
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| 4 | require_once ('../jpgraph_date.php'); |
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| 5 | |
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| 6 | DEFINE('INTERVAL', 5*60); |
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| 7 | |
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| 8 | // First create some "dummy" data |
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| 9 | $m = 5; // Number of data sets |
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| 10 | $n = 4; // Number of bids to show |
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| 11 | $startbid = 8000; |
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| 12 | |
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| 13 | for( $i=0; $i < $m; ++$i ) { |
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| 14 | $bids[$i] = array($startbid + rand(100,500)*10 ); |
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| 15 | for( $j=1; $j < $n; ++$j ) { |
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| 16 | $bids[$i][$j] = $bids[$i][$j-1] + rand(20,500)*10; |
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| 17 | } |
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| 18 | } |
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| 19 | |
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| 20 | $start = floor(time()/INTERVAL)*INTERVAL; |
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| 21 | $times = array($start); |
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| 22 | for( $i=1; $i < $n; ++$i ) { |
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| 23 | // Create a timestamp for every 5 minutes |
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| 24 | $times[$i] = $times[$i-1]+INTERVAL; |
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| 25 | } |
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| 26 | |
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| 27 | // Setup the bid graph |
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| 28 | $graph = new Graph(600,250); |
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| 29 | $graph->SetMargin(80,30,50,40); |
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| 30 | $graph->SetMarginColor('white'); |
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| 31 | $graph->SetScale('dateint'); |
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| 32 | $graph->title->Set('Current Bids'); |
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| 33 | $graph->title->SetFont(FF_ARIAL,FS_BOLD,12); |
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| 34 | $graph->subtitle->Set('(Updated every 5 minutes)'); |
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| 35 | $graph->subtitle->SetFont(FF_ARIAL,FS_ITALIC,10); |
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| 36 | |
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| 37 | // Enable antialias |
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| 38 | $graph->img->SetAntiAliasing(); |
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| 39 | |
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| 40 | // Setup the y-axis to show currency values |
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| 41 | $graph->yaxis->SetLabelFormatCallback('number_format'); |
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| 42 | $graph->yaxis->SetLabelFormat('$%s'); |
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| 43 | |
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| 44 | //Use hour:minute format for the labels |
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| 45 | $graph->xaxis->scale->SetDateFormat('H:i'); |
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| 46 | |
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| 47 | // Force labels to only be displayed every 5 minutes |
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| 48 | $graph->xaxis->scale->ticks->Set(INTERVAL); |
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| 49 | |
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| 50 | // Adjust the start time for an "even" 5 minute, i.e. 5,10,15,20,25, ... |
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| 51 | $graph->xaxis->scale->SetTimeAlign(MINADJ_5); |
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| 52 | |
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| 53 | // Create the plots using the dummy data created at the beginning |
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| 54 | $line = array(); |
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| 55 | for( $i=0; $i < $m; ++$i ) { |
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| 56 | $line[$i] = new LinePlot($bids[$i],$times); |
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| 57 | $line[$i]->mark->SetType(MARK_SQUARE); |
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| 58 | } |
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| 59 | $graph->Add($line); |
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| 60 | |
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| 61 | // Send the graph back to the client |
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| 62 | $graph->Stroke(); |
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| 63 | ?> |
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