matlab代码，描述了如何画高斯一维分布，和二维，三维以及高维分布，有产生高斯数据的matalb函数-matlab code，discript how to draw a gaussian function and the code that produce the data for this fuction
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001116s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.084848s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001045s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001108s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000973s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003045s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000841s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003669s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014947s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001484s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 33383 [ RunTime:0.013822s ]
