我的Matlab 实用函数

【不断更新】

1.去重函数 unique

[C,ia,ic] = unique(A,'rows','stable') also returns index vectors ia and ic, such that C = A(ia,:) and A = C(ic,:)

'stable'输出结果不排序，'sorted'输出结果排序

'rows' treats each row of A as a single entity and returns the unique rows of A.

2.判断点是否在多边形区域内 inpolygon

[in,on]= inpolygon(xq,yq,xv,yv) also returns on indicating if the query points are on the edge of the polygon area.

可一次判断多个点是否落在区域内(in)或者边上(on)

3.多边形绘图 patch

patch('XData',sh_pos(:,1),'YData',sh_pos(:,2),'FaceColor',[1,1,1])

4.颜色映射函数 hsv

hsv(n) 返回n*3的RGB颜色映射矩阵

http://www.cnblogs.com/youth0826/archive/2012/08/11/2633688.html