%計算角度

function?beta?=?caculatebeta（se）
dy?=?e（2）?-?s（2）;
dx?=?e（1）?-?s（1）;
if?dx==0?%起點和終點在與Y軸平行的一條直線上
????beta=pi/2;?
else
????beta?=?atan（dy/dx）;?%用反tan函數求出起點和終點的連線與X軸之間的夾角，即航向角
????if（dx?????????if（dy?>?0）%且終點在起點的上方
????????????beta?=?pi?-?abs（beta）;
????????else
????????????beta?=?pi?+?abs（beta）;
????????end
????else
????????if（dy?????????????beta?=?2*pi-?abs（beta）;
????????end
????end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2020-05-30?21:08??vfh360\
?????文件?????????384??2014-02-11?14:34??vfh360\caculateangle.asv
?????文件?????????510??2020-04-05?21:21??vfh360\caculatebeta.m
?????文件?????????392??2014-02-11?14:44??vfh360\caculaterangle.m
?????文件????????3257??2020-04-05?10:48??vfh360\cave.png
?????文件?????????210??2020-04-06?18:51??vfh360\drawpoint.m
?????文件?????????181??2014-02-22?15:45??vfh360\endpoint.mat
?????文件?????????102??2020-04-06?20:42??vfh360\howmany.m
?????文件?????????587??2020-05-25?20:25??vfh360\obstacle.m
?????文件????????5958??2020-05-25?20:25??vfh360\obstacle.mat
?????文件????????1048??2020-04-13?14:56??vfh360\picture1.png
?????文件????????1458??2020-04-27?20:14??vfh360\picture2.png
?????文件????????1306??2020-04-27?19:46??vfh360\picture3.png
?????文件????????1454??2020-04-27?19:41??vfh360\picture4.png
?????文件????????1978??2020-04-27?20:02??vfh360\picture5.png
?????文件????????1967??2020-04-27?20:08??vfh360\picture6.png
?????文件?????????811??2020-04-09?19:43??vfh360\plotBinHistogram.m
?????文件?????????926??2020-04-12?15:51??vfh360\plotHistogram.m
?????文件?????????221??2020-04-12?11:13??vfh360\sac.m
?????文件?????????203??2014-02-10?15:47??vfh360\startpoint.mat
?????文件?????6231588??2020-04-29?10:24??vfh360\untitled.emf
?????文件????????6947??2020-05-30?21:19??vfh360\vfh.m
?????文件????????4413??2020-04-06?18:41??vfh360\vfh1.m
?????文件????????3941??2020-04-06?18:43??vfh360\vfh2.m
?????文件?????????355??2020-04-05?16:47??vfh360\程序說明.txt