PHP数据展示之JpGraph类库

1.  JpGraph的介绍

1)  jpgraph是一种专门用于绘制统计图的运行库,使用jpgraph创建统计图时,只需要给出相应的数据,就能设置统计图标题和统计图类型即可.

2)  jpgraph是一种面向对象的图像绘制库,既有GD2函数库,对其中函数进行封装,得到了几个用于生成统计图的函数

3)  可以生成X-Y坐标图,X-Y-Y坐标图,柱形图,饼图,3D饼图等统计图,并会自动生成坐标轴,坐标轴刻度,图例等信息,帮助我们快速生成所需样式.

 

2.  JpGraph类库基本使用

2-1JpGraph类库的安装和配置

下载地址: https://jpgraph.net/download/

只需要解压文件拷贝src文件到项目文件夹即可使用

注意:需要GD库支持

 

2-2JpGraph类库的实例

2-2-1创建X-Y坐标图

<?php
//引入相关文件
require_once '../jpgraph/jpgraph-4.2.7/src/jpgraph.php' ;
require_once '../jpgraph/jpgraph-4.2.7/src/jpgraph_line.php' ;
//创建画布
$graph = new Graph ( 600 , 400 ) ;
/*
 * 设置横纵坐标刻度样式
 * lin 直线
 * text 文本
 * int 整数
 * log 对数
 * 使用方法:
 * X+Y形式:textint
 */
$aAxisType = 'textint' ;
$graph -> SetScale ( $aAxisType ) ;
//设置统计图的标题
$graph -> title -> Set ( 'this is a test' ) ;
//模拟数据
$data = array ( 0 => 17 , 1 => 20 , 2 => 30 , 3 => 40 , 4 => 50 , 5 => 30 , 6 => 25 , 7 => 54 , 8 => 29 , 9 => 13 , 10 => 37 , 11 => 16 ) ;
//得到linePlot对象
$linePlot = new LinePlot ( $data ) ;
//设置图例
$linePlot -> SetLegend ( 'tuli' ) ;
//将统计图添加到画布上
$graph -> Add ( $linePlot ) ;
//输出画布
$graph -> Stroke () ;

 

 

2-2-2设置统计图颜色

//设置图例
$linePlot -> SetLegend ( 'tuli' ) ;
//将统计图添加到画布上
$graph -> Add ( $linePlot ) ;
//设置统计图的颜色,一定要在添加画布之后才设置,否则无效
$linePlot -> SetColor ( 'red' ) ;
//输出画布
$graph -> Stroke () ;

 

 

2-2-3输出和保存画布

//设置图例
$linePlot -> SetLegend ( 'tuli' ) ;
//将统计图添加到画布上
$graph -> Add ( $linePlot ) ;
//设置统计图的颜色,一定要在添加画布之后才设置,否则无效
$linePlot -> SetColor ( 'red' ) ;
//输出画布
//$graph->Stroke();
//保存为图片
$graph -> Stroke ( './test.png' ) ;

3.  解决中文乱码问题

<?php
//引入相关文件
require_once '../jpgraph/jpgraph-4.2.7/src/jpgraph.php' ;
require_once '../jpgraph/jpgraph-4.2.7/src/jpgraph_line.php' ;
//创建画布
$graph = new Graph ( 600 , 400 ) ;
/*
 * 设置横纵坐标刻度样式
 * lin 直线
 * text 文本
 * int 整数
 * log 对数
 * 使用方法:
 * X+Y形式:textint
 */
$aAxisType = 'textint' ;
$graph -> SetScale ( $aAxisType ) ;
//设置统计图的标题
$graph -> title -> Set ( '这是一张统计图' ) ;
//模拟数据
$data = array ( 0 => 17 , 1 => 20 , 2 => 30 , 3 => 40 , 4 => 50 , 5 => 30 , 6 => 25 , 7 => 54 , 8 => 29 , 9 => 13 , 10 => 37 , 11 => 16 ) ;
//得到linePlot对象
$linePlot = new LinePlot ( $data ) ;
//设置图例
$linePlot -> SetLegend ( '统计图图例' ) ;
//将统计图添加到画布上
$graph -> Add ( $linePlot ) ;
//设置统计图的颜色,一定要在添加画布之后才设置,否则无效
$linePlot -> SetColor ( 'red' ) ;
//输出画布
$graph -> Stroke () ;

 

要进行配置

支持标题中文,找到jpgraph_ttf.inc.php,修改配置如下:

支持图例名称中文,修改配置如下:

4. 图文代码实战

4.1创建X-Y-Y坐标图(折线坐标图)

<?php
/**
 * Created by PhpStorm.
 * User: King
 * Date: 2019/7/13
 * Time: 23:36
 */
//引入类库
require_once '../jpgraph/jpgraph-4.2.7/src/jpgraph.php' ;
require_once '../jpgraph/jpgraph-4.2.7/src/jpgraph_line.php' ;
$data = array ( 0 =>- 21 , 1 =>- 3 , 2 => 12 , 3 => 19 , 4 => 23 , 5 => 29 , 6 => 30 , 7 => 22 , 8 => 26 , 9 => 18 , 10 => 5 , 11 =>- 10 ) ; //第一条数据
$data2y = array ( 0 => 3 , 1 => 12 , 2 => 18 , 3 => 30 , 4 => 28 , 5 => 33 , 6 => 43 , 7 => 39 , 8 => 36 , 9 => 29 , 10 => 15 , 11 => 10 ) ; //第二条数据
//得到Graph对象
$graph = new Graph ( 400 , 400 ) ;
//设置X和Y轴样式及Y轴的最大值最小值
$graph -> SetScale ( "textint" , - 30 , 50 ) ;
//设置右侧Y轴样式及其最大值最小值
$graph -> SetY2Scale ( "int" , - 30 , 50 ) ;
//设置图像样式，加入阴影
$graph -> SetShadow () ;
//设置图像边界范围
$graph -> img -> setMargin ( 40 , 30 , 50 , 70 ) ;
//设置标题
$graph -> title -> Set ( "this is a test X-Y-Y" ) ;
//得到曲线实例
$linePlot = new LinePlot ( $data ) ;
//得到第二条曲线
$linePlot2y = new LinePlot ( $data2y ) ;
//将曲线加入到图像中
$graph -> Add ( $linePlot ) ;
$graph -> Add ( $linePlot2y ) ;
//设置三个坐标轴名称
$graph -> xaxis -> title -> Set ( "Month" ) ;
$graph -> yaxis -> title -> Set ( "beijing" ) ;
$graph -> y2axis -> title -> Set ( "ShangHai" ) ;
//设置两条曲线的颜色
$linePlot -> SetColor ( 'red' ) ;
$linePlot2y -> SetColor ( 'black' ) ;
//设置两条曲线的图例
$linePlot -> SetLegend ( "Beijing" ) ;
$linePlot2y -> SetLegend ( "Shanghai" ) ;
//设置图例样式
$graph -> legend -> setlayout ( LEGEND_HOR ) ;
$graph -> legend -> Pos ( 0.45 , 0.9 , "center" , "bottom" ) ;
//将图像输出到浏览器
$graph -> Stroke () ;

 

4.2创建柱形图

<?php
/**
 * Created by PhpStorm.
 * User: King
 * Date: 2019/7/13
 * Time: 23:42
 */
//引入类库
require_once '../jpgraph/jpgraph-4.2.7/src/jpgraph.php' ;
require_once '../jpgraph/jpgraph-4.2.7/src/jpgraph_bar.php' ;
//柱形图模拟数据
$data = array ( 0 =>- 21 , 1 =>- 3 , 2 => 12 , 3 => 19 , 4 => 23 , 5 => 29 , 6 => 30 , 7 => 22 , 8 => 26 , 9 => 18 , 10 => 5 , 11 =>- 10 ) ;
//创建背景图
$graph = new Graph ( 400 , 300 ) ;
//设置刻度样式
$graph -> SetScale ( "textlin" ) ;
//设置边界范围
$graph -> img -> SetMargin ( 30 , 30 , 80 , 30 ) ;
//设置标题
$graph -> title -> Set ( "BarPlot test" ) ;
//得到柱形图对象
$barPlot = new BarPlot ( $data ) ;
//设置柱形图图例
$barPlot -> SetLegend ( "beijing" ) ;
//显示柱形图代表数据的值
$barPlot -> value -> show () ;
//将柱形图加入到背景图
$graph -> Add ( $barPlot ) ;
//设置柱形图填充颜色
$barPlot -> setfillcolor ( 'yellow' ) ;
//设置边框颜色
$barPlot -> SetColor ( 'red' ) ;
//将柱形图输出到浏览器
$graph -> Stroke () ;

 

4.3创建饼图

<?php
/**
 * Created by PhpStorm.
 * User: King
 * Date: 2019/7/13
 * Time: 23:45
 */
require_once "../jpgraph/jpgraph-4.2.7/src/jpgraph.php" ;
require_once "../jpgraph/jpgraph-4.2.7/src/jpgraph_pie.php" ;
//模拟数据
$data = array ( 0 => 3.5 , 1 => 4.6 , 2 => 9.1 , 3 => 21.9 , 4 => 42.3 , 5 => 90.7 , 6 => 183.5 , 7 => 127.5 , 8 => 61.4 , 9 => 33.5 , 10 => 11.5 , 11 => 4.4 ) ;
//创建画布
$graph = new PieGraph ( 800 , 500 ) ;
//设置图像边界范围
$graph -> img -> SetMargin ( 30 , 30 , 80 , 30 ) ;
//设置标题
$graph -> title -> Set ( "PiePlot Test" ) ;
//得到饼图对象
$piePlot = new PiePlot ( $data ) ;
//设置图例
$piePlot -> SetLegends ( array ( 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 )) ;
//设置图例位置
$graph -> legend -> Pos ( 0.01 , 0.45 , "left" , "top" ) ;
//添加到画布中
$graph -> Add ( $piePlot ) ;
//输出
$graph -> Stroke () ;

 

4.4创建3D饼图()

<?php
/**
 * Created by PhpStorm.
 * User: King
 * Date: 2019/7/13
 * Time: 23:45
 */
require_once "../jpgraph/jpgraph-4.2.7/src/jpgraph.php" ;
require_once "../jpgraph/jpgraph-4.2.7/src/jpgraph_pie.php" ;
require_once "../jpgraph/jpgraph-4.2.7/src/jpgraph_pie3d.php" ;
//模拟数据
$data = array ( 0 => 3.5 , 1 => 4.6 , 2 => 9.1 , 3 => 21.9 , 4 => 42.3 , 5 => 90.7 , 6 => 183.5 , 7 => 127.5 , 8 => 61.4 , 9 => 33.5 , 10 => 11.5 , 11 => 4.4 ) ;
//创建画布
$graph = new PieGraph ( 800 , 500 ) ;
//设置图像边界范围
$graph -> img -> SetMargin ( 30 , 30 , 80 , 30 ) ;
//设置标题
$graph -> title -> Set ( "PiePlot Test" ) ;
//得到饼图对象
$piePlot3d = new PiePlot3D ( $data ) ;
//设置图例
//$piePlot->SetLegends(array(1,2,3,4,5,6,7,8,9,10,11,12));
//设置图例
$piePlot3d -> SetLegends ( array ( "Jan" , "Feb" , "Mar" , "Apr" , "May" , "Jun" , "Jul" , "Aug" , "Sep" , "Oct" , "Nov" , "Dec" )) ;
//设置图例位置
$graph -> legend -> Pos ( 0.01 , 0.45 , "left" , "top" ) ;
//添加到画布中
//$graph->Add($piePlot);
$graph -> Add ( $piePlot3d ) ;
//输出
$graph -> Stroke () ;

来源：CSDN

作者：坚持669jjk

链接：https://blog.csdn.net/cpongo5/article/details/95944025