替代MATLAB中内置函数griddata进行曲面拟合，速度和效果更方面好
使用方法:
[Xi,Yi,Zi]=surfergriddata(X,Y,Z,Xi,Yi,method) or
[Xi,Yi,Zi]=surfergriddata(X,Y,Z) or
[Zi]=surfergriddata(X,Y,Z,Xi,Yi,method) or
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001180s ]
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:0.113045s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001127s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002160s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001224s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003638s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001060s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003248s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014929s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001316s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 15656 [ RunTime:0.001280s ]
