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★