php中怎样生成坐标图，急急，高分求

Question

去看看php中画图的函数，应该就可以了

Answer 1

不就是个折线图吗？faq区中就有

Answer 2

<?
session_start();
header("Content-type: image/gif"); 
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
$week_regs = $_SESSION['week_regs'];//纵坐标
$week_days = $_SESSION['week_days'];//横坐标
$size = count($week_regs);
$max_regs = 0;
for ($i=0;$i<$size;$i++)
{
if ($max_regs<$week_regs[$i])
{
$max_regs=$week_regs[$i];
}
}
$im = imagecreate(530,400); //创建图象
//分配颜色
$black = imagecolorallocate($im, 0,0,0);
$white = imagecolorallocate($im, 255,255,255);
$gray = imagecolorallocate($im, 223,223,223);
$red   = imagecolorallocate($im,255,0,0);
$green = imagecolorallocate($im,0,255,0);
$blue  = imagecolorallocate($im,0,0,255);
$yellow = imagecolorallocate($im,241,236,186);
$unit = ceil($max_regs/300);//每像素代表的单位//画出矩形并填充
imagefilledrectangle($im,0,0,530,400,$yellow);
imagefilledrectangle($im,50,50,500,350,$white);
imagerectangle($im,0,0,529,399,$black);//画横向虚线及刻度
$style = array ($gray,$gray,$gray,$white);
$style2 = array ($gray,$white,$white,$white);
imagesetstyle($im, $style);
for ($i=50;$i<=350;$i=$i+20) {
imageline($im,50,$i,500,$i,IMG_COLOR_STYLED);
$strtmp=(350-$i)*$unit;
imagestring($im,2,20,$i-10,$strtmp,$blue);
}//输出文字注解
$strtmp = "date";
imagestring($im,8,250,380,$strtmp,$black);
$strtmp = "new reg community numbers";
imagestringup($im,5,2,300,$strtmp,$black);//定义横竖坐标单位for ($i=0;$i<count($week_regs);$i++)
{
$x_pos[] = $i*60+50;
}
//画纵坐标和日期
for ($j=0;$j<count($week_regs);$j++)
{
$cdate=$week_days[$j];
imagestring($im,2,$x_pos[$j]-30,350,$cdate,$black);
imagesetstyle($im, $style);
imageline($im,$x_pos[$j],50,$x_pos[$j],350,IMG_COLOR_STYLED);
}
for ($j=0;$j<count($week_regs)-1;$j++)
{
imageline($im,$x_pos[$j],350-ceil($week_regs[$j]/$unit),$x_pos[$j+1],350-ceil($week_regs[$j+1]/$unit),$red);
}
//完成画图
Imagegif($im); 
ImageDestroy($im); ?>

Answer 3

http://hh.cc163.com/php/phpimagehowto/#zhexiantu

Answer 4

或者我的BLOG里也有一个。
http://blog.csdn.net/kingerq

Answer 5

http://www.aditus.nu/jpgraph/features.php
下载这个库,使用方便功能强大,呵呵