数据可视化即绘图功能是matlab的一大特色。
人们往往很难直接从一大堆数据中体会到它的含义，用数据画出图形用视觉器官直接感受到数据的许多内在本质。
matlab可以给出数据的二维、三维乃至四维图形表现，通过对图形线型、立面、色彩、渲染、光线、视觉等的控制可把数据的特性表现得淋漓尽致。-failed to translate
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001252s ]
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:0.063952s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000963s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001122s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000966s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003058s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000828s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004087s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.013910s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001005s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 31739 [ RunTime:0.019269s ]
