jiao_taishan 发表于 2011-11-18 23:52 
麻烦大侠解释下xaxt是个什么参数呀?我看plot的帮助里面木有的说。。。看了一晚上了
?par
xaxt
A character which specifies the x axis type. Specifying "n" suppresses plotting of the axis. The standard value is "s": for compatibility with S values "l" and "t" are accepted but are equivalent to "s": any value other than "n" implies plotting.