1 | <?php // content="text/plain; charset=utf-8" |
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2 | require_once ('jpgraph/jpgraph.php'); |
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3 | require_once ('jpgraph/jpgraph_line.php'); |
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4 | |
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5 | // The callback that converts timestamp to minutes and seconds |
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6 | function TimeCallback($aVal) { |
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7 | return Date('H:i:s',$aVal); |
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8 | } |
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9 | |
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10 | // Fake some suitable random data |
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11 | $now = time(); |
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12 | $datax = array($now); |
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13 | for( $i=0; $i < 360; $i += 10 ) { |
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14 | $datax[] = $now + $i; |
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15 | } |
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16 | $n = count($datax); |
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17 | $datay=array(); |
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18 | for( $i=0; $i < $n; ++$i ) { |
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19 | $datay[] = rand(30,150); |
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20 | } |
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21 | |
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22 | // Setup the basic graph |
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23 | $graph = new Graph(324,250); |
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24 | $graph->SetMargin(40,40,30,70); |
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25 | $graph->title->Set('Date: '.date('Y-m-d',$now)); |
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26 | $graph->SetAlphaBlending(); |
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27 | |
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28 | // Setup a manual x-scale (We leave the sentinels for the |
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29 | // Y-axis at 0 which will then autoscale the Y-axis.) |
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30 | // We could also use autoscaling for the x-axis but then it |
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31 | // probably will start a little bit earlier than the first value |
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32 | // to make the first value an even number as it sees the timestamp |
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33 | // as an normal integer value. |
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34 | $graph->SetScale("intlin",0,200,$now,$datax[$n-1]); |
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35 | |
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36 | // Setup the x-axis with a format callback to convert the timestamp |
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37 | // to a user readable time |
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38 | $graph->xaxis->SetLabelFormatCallback('TimeCallback'); |
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39 | $graph->xaxis->SetLabelAngle(90); |
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40 | |
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41 | // Create the line |
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42 | $p1 = new LinePlot($datay,$datax); |
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43 | $p1->SetColor("blue"); |
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44 | |
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45 | // Set the fill color partly transparent |
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46 | $p1->SetFillColor("blue@0.4"); |
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47 | |
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48 | // Add lineplot to the graph |
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49 | $graph->Add($p1); |
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50 | |
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51 | // Output line |
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52 | $graph->Stroke(); |
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53 | ?> |
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54 | |
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55 | |
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