function?out?=?RandDir（N）

%?Generate?a?random?vector?from?the?set?{+/-?e_1?+/-?e_2...?+/-?e_N}
%?where?e_i?is?the?ith?basis?vector.?N?should?be?an?integer.

I?=?round（ceil（2*N*rand））;

if?rem（I2）?==?1
????sgn?=?-1;
else
????sgn?=?1;
end
out?=?zeros（N1）;

out（ceil（I/2））?=?sgn*1;

end

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件???????16460??2008-10-10?17:09??DemoData.mat
?????文件??????215335??2008-09-26?13:38??Demo_Image.gif
?????文件?????????305??2008-11-05?22:14??RandDir.m
?????文件?????????382??2008-09-30?18:50??RandomGraphMove.m
?????文件????????8314??2009-01-07?14:43??RandomWalks.m
?????文件???????81992??2008-11-05?22:06??RandomWalks.png
?????文件????????8367??2009-01-07?14:38??RandomWalks_NoEconometrics.m
?????目錄???????????0??2009-05-28?08:19??html\
?????文件???????25339??2009-01-07?15:02??html\RandomWalks.html
?????文件????????3953??2009-01-07?15:02??html\RandomWalks.png
?????文件????????7315??2009-01-07?14:59??html\RandomWalks_01.png
?????文件???????11726??2009-01-07?14:59??html\RandomWalks_02.png
?????文件???????40887??2009-01-07?15:00??html\RandomWalks_03.png
?????文件???????18503??2009-01-07?15:00??html\RandomWalks_04.png
?????文件???????37130??2009-01-07?15:01??html\RandomWalks_05.png
?????文件??????479030??2009-01-07?15:02??html\RandomWalks_06.png
?????文件??????205989??2009-01-07?15:02??html\RandomWalks_07.png
?????文件??????447235??2009-01-07?15:02??html\RandomWalks_08.png
?????文件??????207793??2009-01-07?15:02??html\RandomWalks_09.png
?????文件?????????677??2009-01-07?14:59??html\RandomWalks_eq06570.png
?????文件????????1448??2009-01-07?14:59??html\RandomWalks_eq24049.png
?????文件?????????925??2009-01-07?14:59??html\RandomWalks_eq27924.png
?????文件?????????444??2009-01-07?14:59??html\RandomWalks_eq27941.png
?????文件????????1597??2009-01-07?14:59??html\RandomWalks_eq28134.png
?????文件????????4268??2009-01-07?14:59??html\RandomWalks_eq40747.png
?????文件?????????562??2009-01-07?14:59??html\RandomWalks_eq53776.png
?????文件?????????556??2009-01-07?14:59??html\RandomWalks_eq69739.png
?????文件?????????455??2009-01-07?14:59??html\RandomWalks_eq70849.png
?????文件?????????461??2009-01-07?14:59??html\RandomWalks_eq79464.png
?????文件?????????408??2009-01-07?14:59??html\RandomWalks_eq79749.png
?????文件?????????688??2009-01-07?14:59??html\RandomWalks_eq81000.png
............此處省略3個(gè)文件信息