php统计图形LIbchart类使用实例
统计图形就我们会常到的数据图形了,如果三个数组以图形显示或楼盘以图形走向我们都会要用到图形,下面我来介绍一个php LIbchart图形生成类吧,很用的有需要的朋友可参考.
简单全数字或英文的就可以直接使用下面类了,libchart类大家可自行百度下载:
<?php
/*
update by Leo
It's draw the pic of Sheet,and it will take all the num on the pic.
*/
require "./libchart/classes/libchart.php";
class drawPic {
var $chart;
var $style;
function drawPic($style = "1", $width = "500", $height = "250") {
$this->style = $style;
if ($style == 1) {
//cylinder
$this->chart = new VerticalBarChart($width, $height);
} else if ($style == 2) {
//line
$this->chart = new LineChart($width, $height);
} else if ($style == 3) {
//Lump
$this->chart = new PieChart($width, $height);
} else {
//cross
$this->chart = new HorizontalBarChart($width, $height);
}
}
function draw($obj) {
if ($this->style == 1 || $this->style == "1") {
//cylinder
$dataSet = new XYDataSet();
$this->chart->setTitle($obj->title); //title
$arr = array();
$arr = $obj->dataArray;
foreach ($arr as $key => $val) {
$dataSet->addPoint(new Point($key, $val));
}
$this->chart->setDataSet($dataSet);
$this->chart->render();
} else if ($this->style == 2 || $this->style == "2") {
//line
$this->chart->setTitle($obj->title); //title
$arr = array();
$arr = $obj->dataArray;
$i = 0;
$dataSet = new XYSeriesDataSet();
foreach ($arr as $key => $val) {
$serie{$i} = new XYDataSet();
foreach ($val as $k => $v) {
$serie{$i}->addPoint(new Point($k, $v));
}
$dataSet->addSerie($key, $serie{$i});
$i = $i + 1;
}
$this->chart->setDataSet($dataSet);
$this->chart->render();
} else if ($style == 3) {
//Lump
$dataSet = new XYDataSet();
$this->chart->setTitle($obj->title); //title
$arr = array();
$arr = $obj->dataArray;
foreach ($arr as $key => $val) {
$dataSet->addPoint(new Point($key . "($val)", $val));
}
$this->chart->setDataSet($dataSet);
$this->chart->render();
} else {
//cross
$dataSet = new XYDataSet();
$this->chart->setTitle($obj->title); //title
$arr = array();
$arr = $obj->dataArray;
foreach ($arr as $key => $val) {
$dataSet->addPoint(new Point($key, $val));
}
$this->chart->setDataSet($dataSet);
$this->chart->render();
}
}
}
class kkk {
};
$n = new drawPic("4"); //it will set 1 or 2 or 3 or 4
$k = new kkk();
$k->dataArray = array(
"2000" => "30",
"2001" => "40",
"2002" => "50",
"2003" => "60",
"2004" => "70",
"2005" => "80",
"20020" => "90"
); //style==1 or style=2 or style=4
//$k->dataArray=array("2000"=>"30","2001"=>"40","2002"=>"50","2003"=>"60","2004"=>"70","2005"=>"80","20020"=>"90");//style==3
//$k->dataArray=array("yi"=>array("2000"=>"30","2001"=>"40","2002"=>"50","2004"=>"60"),"er"=>array("2003"=>"60","2004"=>"70","2005"=>"80","20020"=>"90"),"san"=>array("33"=>"12","45"=>"56","89"=>"45","86"=>"49"));//style==2 and the years will show first array to block.(it will be show 2000 2001 2002 2004)
$k->title = "The Sheet title";
$n->draw($k);
?>方法1,2,4为相同的数组,3为线性图,有可能有两条线或者多条线的比较,也可以单线,如果要使用中文可能会发现libchart中文乱码 了,下面找了一个办法.
我们的应用主源代码如下:
<?php
header("content-type:image/png");
require_once ('libchart/classes/libchart.php');
$chart = new VerticalBarChart(500, 250); // 参数表示需要创建的图像的宽和高
$dataSet = new XYDataSet(); // 实例化一个 XY 轴数据对象
// 为这个对象增加四组数据集合, Point 对象的第一个参数表示 X 轴坐标,
// 第二个表示 Y 轴坐标
$str = '二月';
$str = mb_convert_encoding($str, "html-entities", "utf-8");
$dataSet->addPoint(new Point("Jan 2005", 273));
$dataSet->addPoint(new Point("$str", 120));
$dataSet->addPoint(new Point("March 2005", 442));
$dataSet->addPoint(new Point("April 2005", 600));
// 把这个数据集合传递给图形对象
$chart->setDataSet($dataSet);
// 设置图形的标题,并把它作为一个 png 文件渲染
$chart->setTitle("统计图");
//$chart -> render ( "demo/generated/demo1.png" ) ;
// 这里需要一个路径和文件名称
//就这么简单一个像下图一样美丽的柱状图就出来了
$chart->render();
?>标红字的地方是为了解决中文乱码的.
2、标题乱码:
默认显示中文是乱码,这是由于编码的原因,做如下修改:首先,更改libchar/libchart/classes/view/chart/Chart.php,找到如下内容,代码如下:
<?php
public function setTitle($title) {
$this->plot->setTitle($title);
}
//更改为如下代码:
public function setTitle($title) {
$title = mb_convert_encoding($title, "html-entities", "utf-8");
$this->plot->setTitle($title);
}
?>第三步:就是上面某个博客里讲到的:
1、自己写的使用Libchart 库生成图表的php 文件以utf-8编码保存.
2、找几个中文字体库,比如华文行楷、宋体等等,复制到libchart fonts目录下.
3、修改libchart classes目录下的text.php 文件.
第47、48行,代码如下:
<?php $this->fontCondensed = dirname(__FILE__) . "/../fonts/DejaVuSansCondensed.ttf"; $this->fontCondensedBold = dirname(__FILE__) . "/../fonts/DejaVuSansCondensed-Bold.ttf"; //改为: $this->fontCondensed = dirname(__FILE__) . "/../fonts/你找来的中文字体"; $this->fontCondensedBold = dirname(__FILE__) . "/../fonts/你找来的中文字体"; ?>
我修改的代码如下:
<?php
public function Text() {
$baseDir = dirname(__FILE__) . "/../../../";
// Free low-res fonts based on Bitstream Vera <http://dejavu.sourceforge.net/wiki/>
$this->fontCondensed = $baseDir . "fonts/FANGZHENGFANGSONG.ttf";
$this->fontCondensedBold = $baseDir . "fonts/FANGZHENGFANGSONG.ttf";
}
?>FANGZHENGFANGSONG.ttf 这个文件是我找的方正仿宋简体字库,我把中文名字改成那个样子了,其实不改也是可以的.
主要是基本操作,然后又疑问的地方,按照上面说的做了,应该就是已经可以了,再次谢谢提供这些方法的热心网友,大家多多交流呀.
教程链接:http://www.phprm.com/tuxiang/fs4841.html
随意转载~但请保留教程地址★