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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