利用PHP的jpgraph将python脚本的数据绘制成折线图

曾经终败给现在 2022-05-18 08:52 119阅读 0赞

首先是PHP绘制折线图的代码，利用jpgraph中的两个库文件，通过shell\_exec调用python脚本，并将python脚本输出的数据保存到数组当中，其中要做字符串的拆分。这里假设是一条温度曲线

<?php 
    	/**
    	* Created by sublime.
    	* User: cui
    	
    	*/
    
    	//include the library of jpgraph
    	require_once ('jpgraph/jpgraph.php');
    	require_once ('jpgraph/jpgraph_line.php');
    	$output = shell_exec('C:\Users\99113\AppData\Local\Programs\Python\Python36-32\python port.py 2>error.txt 2>&1');
    	$array = explode(',', $output);
    	$data = array(10,20,30);
    	$x = array(1,2,3,4,5,6,7,8,9,10);
    	$y = array(0,5,10,15,20,25,30,35,40,45,50);
    	$i = 0;
    	
    	//创建统计数据，保存到数组中,数据来自python脚本
    	for($i = 0; $i < count($array); $i++){
    		$data[$i] = intval($array[$i]);
    	}
    	//创建统计图样式，设置刻度样式
    	$graph = new Graph(600,400);
    	$graph->cleartheme();
    	$graph->SetScale("textlin");
    	$graph->SetShadow();
    	$graph->img->SetMargin(40, 50, 20, 40);
    	$graph->title->Set(iconv('utf-8', 'GB2312//IGNORE', '温度变化曲线图'));
    	//$graph->title->Set("the change of temperature");
    	//创建LinePlot对象，将创建的对象加入到创建的统计图对象中
    	$lineplot = new LinePlot($data);
    
    	$graph->Add($lineplot);
    	//设置标题等样式，输出统计图
    	$graph->xaxis->title->Set(iconv('utf-8', 'GB2312//IGNORE', "time/day"));//设置标题
    	$graph->yaxis->title->Set(iconv('utf-8', 'GB2312//IGNORE', "temperature/℃"));
    	//$graph->xaxis->SetTickLabels($x);
    	//$graph->yaxis->SetTickLabels(range(0,42));
    	$graph->title->SetFont(FF_SIMSUN, FS_BOLD);
    	$graph->yaxis->title->SetFont(FF_SIMSUN, FS_BOLD);
    	$lineplot->SetColor('red');//设置颜色
    	//$lineplot->SetLegend(iconv('utf-8', 'GB2312//IGNORE', "温度曲线"));//绑定
    	$graph->legend->SetLayout(LEGEND_HOR);
    	$graph->legend->Pos(0.4, 0.95, 'center', 'bottom');
    	//图例文字框的位置 0.4，0.95右上角为基准的，0.4是距左右距离，0.95是上下距离。
    	$graph->Stroke();//输出
    ?>

python脚本的代码

import sys
    
    print("20,")
    print("30,")
    print("25,")
    print("26,")
    print("27,")
    print("28,")
    print("29,")
    print("28,")
    print("26,")
    print("30")

输出效果图

![70][]

[70]: /images/20220518/b2f3f736684e48f29ca30a95a176ccb5.png