如何使用fpdf php创建Double bar图? [英] How to create Double bar diagram using fpdf php?

问题描述

我在我的php项目中使用FPDF.我想在项目中使用PDF版本的双条形图，如上图所示. FPDF有一种方法可以在 http://www.fpdf中创建饼图和条形图.org/en/script/script28.php .但这不是我想要的双条形图.任何人都有一个想法如何在PHP中使用FPDF创建Double bar图? 非常感谢!!!

I'm using FPDF in my php project. I would like to have PDF version Double bar diagram like above image in my project. There's a way that FPDF can create Pie chart and Bar diagram in http://www.fpdf.org/en/script/script28.php. But it's not double bar diagram like what I want to get. Anyone have an idea how to create Double bar diagram using FPDF in PHP? Many Thanks !!!

推荐答案

可能您是说列图表"

似乎没有创建柱状图的方法，因此我尝试调整现有的条形图.不幸的是，我没有时间进一步开发它.

It seems that there is no method to create column charts, so I tried to adapt the existing bar chart. Unfortunately I have no time to develop it further.

尝试一下(进行必要的更改):

try this (making the necessary changes):

<?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();


?>

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