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 | require_once ('jpgraph/jpgraph_mgraph.php'); |
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6 | |
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7 | // Setup some fake data to simulate some wind speed and direction |
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8 | |
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9 | DEFINE('NDATAPOINTS',420); |
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10 | DEFINE('SAMPLERATE',300); |
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11 | $start = time(); |
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12 | $end = $start+NDATAPOINTS*SAMPLERATE; |
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13 | $data = array(); |
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14 | $xdata = array(); |
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15 | $data_winddirection[0] = rand(100,200); |
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16 | $data_windspeed[0] = rand(7,10); |
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17 | for( $i=0; $i < NDATAPOINTS-1; ++$i ) { |
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18 | $data_winddirection[$i+1] = $data_winddirection[$i] + rand(-4,4); |
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19 | if($data_winddirection[$i+1] < 0 || $data_winddirection[$i+1] > 359) |
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20 | $data_winddirection[$i+1] = 0; |
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21 | |
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22 | $data_windspeed[$i+1] = $data_windspeed[$i] + rand(-2,2); |
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23 | if($data_windspeed[$i+1] < 0 ) |
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24 | $data_windspeed[$i+1] = 0; |
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25 | |
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26 | $xdata[$i] = $start + $i * SAMPLERATE; |
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27 | } |
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28 | $xdata[$i] = $start + $i * SAMPLERATE; |
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29 | |
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30 | |
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31 | // Setup the Wind direction graph |
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32 | $graph = new Graph(300,800); |
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33 | $graph->SetMarginColor('lightgray:1.7'); |
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34 | $graph->SetScale('datlin',0,360); |
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35 | $graph->Set90AndMargin(50,30,60,30); |
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36 | $graph->SetFrame(true,'white',0); |
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37 | $graph->SetBox(); |
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38 | |
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39 | $graph->title->Set('Wind direction'); |
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40 | $graph->title->SetFont(FF_ARIAL,FS_BOLD,14); |
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41 | $graph->title->SetMargin(10); |
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42 | |
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43 | $graph->xaxis->SetFont(FF_ARIAL,FS_NORMAL,9); |
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44 | $graph->xaxis->scale->SetDateFormat('h:i'); |
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45 | $graph->xgrid->Show(); |
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46 | |
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47 | $graph->yaxis->SetLabelAngle(45); |
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48 | $graph->yaxis->SetFont(FF_ARIAL,FS_NORMAL,9); |
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49 | $graph->yaxis->SetLabelMargin(0); |
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50 | $graph->yaxis->scale->SetAutoMin(0); |
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51 | |
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52 | $line = new LinePlot($data_winddirection,$xdata); |
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53 | $line->SetStepStyle(); |
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54 | $line->SetColor('blue'); |
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55 | |
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56 | $graph->Add($line); |
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57 | |
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58 | // Setup the wind speed graph |
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59 | $graph2 = new Graph(300,800); |
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60 | $graph2->SetScale('datlin'); |
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61 | $graph2->Set90AndMargin(50,30,60,30); |
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62 | $graph2->SetMarginColor('lightgray:1.7'); |
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63 | $graph2->SetFrame(true,'white',0); |
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64 | $graph2->SetBox(); |
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65 | |
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66 | $graph2->title->Set('Windspeed'); |
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67 | $graph2->title->SetFont(FF_ARIAL,FS_BOLD,14); |
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68 | $graph2->title->SetMargin(10); |
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69 | |
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70 | $graph2->xaxis->SetFont(FF_ARIAL,FS_NORMAL,9); |
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71 | $graph2->xaxis->scale->SetDateFormat('h:i'); |
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72 | $graph2->xgrid->Show(); |
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73 | |
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74 | $graph2->yaxis->SetLabelAngle(45); |
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75 | $graph2->yaxis->SetFont(FF_ARIAL,FS_NORMAL,9); |
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76 | $graph2->yaxis->SetLabelMargin(0); |
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77 | $graph2->yaxis->scale->SetAutoMin(0); |
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78 | |
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79 | $line2 = new LinePlot($data_windspeed,$xdata); |
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80 | $line2->SetStepStyle(); |
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81 | $line2->SetColor('red'); |
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82 | |
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83 | $graph2->Add($line2); |
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84 | |
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85 | //----------------------- |
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86 | // Create a multigraph |
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87 | //---------------------- |
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88 | $mgraph = new MGraph(); |
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89 | $mgraph->SetMargin(2,2,2,2); |
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90 | $mgraph->SetFrame(true,'darkgray',2); |
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91 | $mgraph->SetFillColor('lightgray'); |
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92 | $mgraph->Add($graph); |
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93 | $mgraph->Add($graph2,300,0); |
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94 | $mgraph->Stroke(); |
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95 | |
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96 | ?> |
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