markdown使用练习

AT&T
=====

>This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet


*这是一个编辑器的时代，一切都这样简单。*
----------------------------------
#header1
__第一级标题__
-----------------------------------

## header2 ##
### header3 ###
#### header4 ####

##header2##
三级标题
> **This** is a *blockquote*

> **This is another blockquote**

    hello word 
	clear 
	clc

	%date:2014/6/1  children's Day
	
	x= [0 0;0 1;1 0;0.5 4;1 3;1 5;1.5 4.5;6 4;6.5 5;7 4;7.5 7;8 6;8 7];
	%plot(x(:,1),x(:,2),'ro')
	IDX = kmeans(x,4);
	
	x1 = [];
	x2 = [];
	x3 = [];
	x4 = [];
	%不同分类的标号
	x1 = find(IDX == 1);
	x2 = find(IDX == 2);
	x3 = find(IDX == 3);
	x4 = find(IDX == 4);
	
	plot(x(x1,1),x(x1,2),'ro',x(x2,1),x(x2,2),'b^',x(x3,1),x(x3,2),'g>',x(x4,1),x(x4,2),'y*')
	title('K平均聚类')
	

[百度](http://www.baidu.com)

[**参考资料** ](http://wowubuntu.com/markdown/basic.html)

- first
- second
- third