1 | <?php // content="text/plain; charset=utf-8" |
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2 | // A medium complex example of JpGraph |
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3 | // Note: You can create a graph in far fewwr lines of code if you are |
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4 | // willing to go with the defaults. This is an illustrative example of |
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5 | // some of the capabilities of JpGraph. |
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6 | |
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7 | require_once ('jpgraph/jpgraph.php'); |
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8 | require_once ('jpgraph/jpgraph_line.php'); |
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9 | require_once ('jpgraph/jpgraph_bar.php'); |
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10 | |
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11 | $month=array( |
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12 | "Jan","Feb","Mar","Apr","Maj","Jun","Jul","Aug","Sep","Okt","Nov","Dec"); |
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13 | |
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14 | // Create some datapoints |
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15 | $steps=100; |
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16 | for($i=0; $i<$steps; ++$i) { |
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17 | $databarx[]=sprintf("198%d %s",floor($i/12),$month[$i%12]); |
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18 | $datay[$i]=log(pow($i,$i/10)+1)*sin($i/15)+35; |
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19 | if( $i % 6 == 0 && $i<$steps-6) { |
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20 | $databary[]=abs(25*sin($i)+5); |
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21 | } |
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22 | else { |
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23 | $databary[]=0; |
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24 | } |
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25 | } |
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26 | |
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27 | // New graph with a background image and drop shadow |
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28 | $graph = new Graph(450,300); |
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29 | $graph->SetBackgroundImage("tiger_bkg.png",BGIMG_FILLFRAME); |
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30 | $graph->SetShadow(); |
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31 | |
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32 | // Use text X-scale so we can text labels on the X-axis |
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33 | $graph->SetScale("textlin"); |
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34 | |
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35 | // Y2-axis is linear |
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36 | $graph->SetY2Scale("lin"); |
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37 | |
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38 | // Color the two Y-axis to make them easier to associate |
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39 | // to the corresponding plot (we keep the axis black though) |
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40 | $graph->yaxis->SetColor("black","red"); |
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41 | $graph->y2axis->SetColor("black","orange"); |
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42 | |
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43 | // Set title and subtitle |
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44 | $graph->title->Set("Combined bar and line plot"); |
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45 | $graph->subtitle->Set("100 data points, X-Scale: 'text'"); |
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46 | |
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47 | // Use built in font (don't need TTF support) |
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48 | $graph->title->SetFont(FF_FONT1,FS_BOLD); |
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49 | |
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50 | // Make the margin around the plot a little bit bigger then default |
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51 | $graph->img->SetMargin(40,140,40,80); |
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52 | |
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53 | // Slightly adjust the legend from it's default position in the |
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54 | // top right corner to middle right side |
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55 | $graph->legend->Pos(0.03,0.5,"right","center"); |
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56 | |
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57 | // Display every 6:th tickmark |
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58 | $graph->xaxis->SetTextTickInterval(6); |
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59 | |
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60 | // Label every 2:nd tick mark |
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61 | $graph->xaxis->SetTextLabelInterval(2); |
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62 | |
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63 | // Setup the labels |
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64 | $graph->xaxis->SetTickLabels($databarx); |
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65 | $graph->xaxis->SetLabelAngle(90); |
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66 | |
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67 | // Create a red line plot |
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68 | $p1 = new LinePlot($datay); |
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69 | $p1->SetColor("red"); |
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70 | $p1->SetLegend("Pressure"); |
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71 | |
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72 | // Create the bar plot |
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73 | $b1 = new BarPlot($databary); |
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74 | $b1->SetLegend("Temperature"); |
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75 | $b1->SetFillColor("orange"); |
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76 | $b1->SetAbsWidth(8); |
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77 | |
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78 | // Drop shadow on bars adjust the default values a little bit |
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79 | $b1->SetShadow("steelblue",2,2); |
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80 | |
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81 | // The order the plots are added determines who's ontop |
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82 | $graph->Add($p1); |
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83 | $graph->AddY2($b1); |
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84 | |
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85 | // Finally output the image |
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86 | $graph->Stroke(); |
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87 | |
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88 | ?> |
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89 | |
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90 | |
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