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 | require_once ('jpgraph/jpgraph_date.php'); |
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5 | |
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6 | // Create a data set in range (50,70) and X-positions |
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7 | DEFINE('NDATAPOINTS',360); |
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8 | DEFINE('SAMPLERATE',240); |
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9 | $start = time(); |
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10 | $end = $start+NDATAPOINTS*SAMPLERATE; |
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11 | $data = array(); |
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12 | $xdata = array(); |
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13 | for( $i=0; $i < NDATAPOINTS; ++$i ) { |
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14 | $data[$i] = rand(50,70); |
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15 | $xdata[$i] = $start + $i * SAMPLERATE; |
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16 | } |
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17 | |
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18 | |
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19 | // Create the new graph |
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20 | $graph = new Graph(540,300); |
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21 | |
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22 | // Slightly larger than normal margins at the bottom to have room for |
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23 | // the x-axis labels |
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24 | $graph->SetMargin(40,40,30,130); |
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25 | |
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26 | // Fix the Y-scale to go between [0,100] and use date for the x-axis |
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27 | $graph->SetScale('datlin',0,100); |
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28 | $graph->title->Set("Example on Date scale"); |
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29 | |
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30 | // Set the angle for the labels to 90 degrees |
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31 | $graph->xaxis->SetLabelAngle(90); |
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32 | |
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33 | // It is possible to adjust the density for the X-axis as well |
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34 | // The following call makes the dates a little more sparse |
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35 | // $graph->SetTickDensity(TICKD_NORMAL,TICKD_SPARSE); |
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36 | |
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37 | // The automatic format string for dates can be overridden |
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38 | // $graph->xaxis->scale->SetDateFormat('h:i'); |
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39 | |
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40 | // Adjust the start/end to a specific alignment |
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41 | $graph->xaxis->scale->SetTimeAlign(MINADJ_15); |
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42 | |
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43 | $line = new LinePlot($data,$xdata); |
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44 | $line->SetLegend('Year 2005'); |
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45 | $line->SetFillColor('lightblue@0.5'); |
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46 | $graph->Add($line); |
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47 | $graph->Stroke(); |
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48 | ?> |
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