如何使用fpdf php創建雙槓圖？

Question

我在我的php項目中使用FPDF。我想在我的項目中使用PDF版本的雙槓圖如上圖。 FPDF可以在http://www.fpdf.org/en/script/script28.php中創建餅圖和條形圖。但它不是像我想要的那樣的雙槓圖。任何人都有一個想法如何使用PHP中的FPDF創建雙槓圖？ 非常感謝！

Answer 1

也許你的意思是「柱形圖」

似乎沒有方法來創建柱形圖，所以我試圖去適應現有的柱狀圖。不幸的是，我沒有時間進一步發展它。

試試這個（進行必要的更改）：

<?php 

require('diag/sector.php'); 

class PDF_Diag extends PDF_Sector { 
    var $legends; 
    var $wLegend; 
    var $sum; 
    var $NbVal; 


    function ColumnChart($w, $h, $data, $format, $color=null, $maxVal=0, $nbDiv=4) 
    { 

     // RGB for color 0 
     $colors[0][0] = 155; 
     $colors[0][1] = 75; 
     $colors[0][2] = 155; 

     // RGB for color 1 
     $colors[1][0] = 0; 
     $colors[1][1] = 155; 
     $colors[1][2] = 0; 

     // RGB for color 2 
     $colors[2][0] = 75; 
     $colors[2][1] = 155; 
     $colors[2][2] = 255; 

     // RGB for color 3 
     $colors[3][0] = 75; 
     $colors[3][1] = 0; 
     $colors[3][2] = 155; 

     $this->SetFont('Courier', '', 10); 
     $this->SetLegends($data,$format); 

     // Starting corner (current page position where the chart has been inserted) 
     $XPage = $this->GetX(); 
     $YPage = $this->GetY(); 
     $margin = 2; 

     // Y position of the chart 
     $YDiag = $YPage + $margin; 

     // chart HEIGHT 
     $hDiag = floor($h - $margin * 2); 

     // X position of the chart 
     $XDiag = $XPage + $margin; 

     // chart LENGHT 
     $lDiag = floor($w - $margin * 3 - $this->wLegend); 

     if($color == null) 
      $color=array(155,155,155); 
     if ($maxVal == 0) 
     { 
      foreach($data as $val) 
      { 
       if(max($val) > $maxVal) 
       { 
        $maxVal = max($val); 
       } 
      } 
     } 

     // define the distance between the visual reference lines (the lines which cross the chart's internal area and serve as visual reference for the column's heights) 
     $valIndRepere = ceil($maxVal/$nbDiv); 

     // adjust the maximum value to be plotted (recalculate through the newly calculated distance between the visual reference lines) 
     $maxVal = $valIndRepere * $nbDiv; 

     // define the distance between the visual reference lines (in milimeters) 
     $hRepere = floor($hDiag/$nbDiv); 

     // adjust the chart HEIGHT 
     $hDiag = $hRepere * $nbDiv; 

     // determine the height unit (milimiters/data unit) 
     $unit = $hDiag/$maxVal; 

     // determine the bar's thickness 
     $lBar = floor($lDiag/($this->NbVal + 1)); 
     $lDiag = $lBar * ($this->NbVal + 1); 
     $eColumn = floor($lBar * 80/100); 

     // draw the chart border 
     $this->SetLineWidth(0.2); 
     $this->Rect($XDiag, $YDiag, $lDiag, $hDiag); 

     $this->SetFont('Courier', '', 10); 
     $this->SetFillColor($color[0],$color[1],$color[2]); 
     $i=0; 
     foreach($data as $val) 
     { 
      //Column 
      $yval = $YDiag + $hDiag; 
      $xval = $XDiag + ($i + 1) * $lBar - $eColumn/2; 
      $lval = floor($eColumn/(count($val))); 
      $j=0; 
      foreach($val as $v) 
      { 
       $hval = (int)($v * $unit); 
       $this->SetFillColor($colors[$j][0], $colors[$j][1], $colors[$j][2]); 
       $this->Rect($xval+($lval*$j), $yval, $lval, -$hval, 'DF'); 
       $j++; 
      } 

      //Legend 
      $this->SetXY($xval, $yval + $margin); 
      $this->Cell($lval, 5, $this->legends[$i],0,0,'C'); 
      $i++; 
     } 

     //Scales 
     for ($i = 0; $i <= $nbDiv; $i++) 
     { 
      $ypos = $YDiag + $hRepere * $i; 
      $this->Line($XDiag, $ypos, $XDiag + $lDiag, $ypos); 
      $val = ($nbDiv - $i) * $valIndRepere; 
      $ypos = $YDiag + $hRepere * $i; 
      $xpos = $XDiag - $margin - $this->GetStringWidth($val); 
      $this->Text($xpos, $ypos, $val); 
     } 
    } 

    function SetLegends($data, $format) 
    { 
     $this->legends=array(); 
     $this->wLegend=0; 
     $this->NbVal=count($data); 
    } 
} 


$pdf = new PDF_Diag(); 
$pdf->AddPage(); 


$data[0] = array(470, 490, 90); 
$data[1] = array(450, 530, 110); 
$data[2] = array(420, 580, 100); 


// Column chart 
$pdf->SetFont('Arial', 'BIU', 12); 
$pdf->Cell(210, 5, 'Chart Title', 0, 1, 'C'); 
$pdf->Ln(8); 
$valX = $pdf->GetX(); 
$valY = $pdf->GetY(); 
$pdf->ColumnChart(110, 100, $data, null, array(255,175,100)); 
//$pdf->SetXY($valX, $valY); 

$pdf->Output(); 


?>