function?data=Denoise（data）
%%?噪聲剔除
X=data（:1）;Y=data（:2）;Z=data（:3）;
Cellsize=2;
NumberofPoint=size（data1）;

MaxX=max（data（:1））;MinX=min（data（:1））;
MaxY=max（data（:2））;MinY=min（data（:2））;
Nx=floor（（MaxX-MinX）/Cellsize）+1;
Ny=floor（（MaxY-MinY）/Cellsize）+1;
Gridindex=cell（NxNy）;

for?i=1:NumberofPoint
????indx=floor（（X（i）-MinX）/Cellsize）+1;
????indy=floor（（Y（i）-MinY）/Cellsize）+1;
????Gridindex{indxindy}=[Gridindex{indxindy};i];
end
for?i=1:Nx
????for?j=1:Ny
????????Noughberindex=Gridindex{ij};
????????if?~isempty（Noughberindex）
????????????allZ=Z（Noughberindex）;
????????????allX=X（Noughberindex）;
????????????allY=Y（Noughberindex）;
????????????[minZloc]=min（allZ）;
????????????minX=allX（loc）;
????????????minY=allY（loc）;
????????????GridMinZ（ij1）=minX;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-07-28?09:53??分水嶺分割算法\
?????文件???????92762??2016-03-23?20:53??分水嶺分割算法\1.jpg
?????文件????????4352??2016-04-08?09:05??分水嶺分割算法\Denoise.m
?????文件?????????547??2016-02-29?10:47??分水嶺分割算法\TPS.m
?????文件?????????693??2016-04-02?11:49??分水嶺分割算法\TPSinterpolation.m
?????文件??????727200??2016-04-03?11:01??分水嶺分割算法\dem.txt
?????文件?????1413601??2016-04-08?09:07??分水嶺分割算法\denosiedata.txt
?????文件?????????294??2016-04-07?20:25??分水嶺分割算法\denosiedata2.txt
?????文件????????2475??2016-03-30?16:59??分水嶺分割算法\elevation2bw.m
?????文件????????1054??2016-03-25?08:51??分水嶺分割算法\examplewatershed.m
?????文件?????1241513??2016-04-04?11:12??分水嶺分割算法\filtered12.txt
?????文件???????10009??2016-04-05?11:24??分水嶺分割算法\filtering.m
?????文件????????1903??2016-03-31?08:12??分水嶺分割算法\fractal_interpolation.m
?????文件?????????481??2016-03-30?17:20??分水嶺分割算法\gradientcalculation.m
?????文件???????13486??2016-04-03?11:35??分水嶺分割算法\morphological_RBFinterpolation.m
?????文件????????3654??2016-03-24?20:28??分水嶺分割算法\preprocessing.m
?????文件????????6367??2009-10-27?11:59??分水嶺分割算法\rbfbuild.m
?????文件????????3596??2009-10-27?11:58??分水嶺分割算法\rbfpredict.m
?????文件????????1169??2009-10-15?21:29??分水嶺分割算法\rbftest.m
?????文件?????1178310??2004-02-11?13:54??分水嶺分割算法\samp11.txt
?????文件?????1615689??2004-02-11?13:59??分水嶺分割算法\samp12.txt
?????文件??????894722??2004-02-11?14:04??分水嶺分割算法\samp31.txt
?????文件??????348161??2004-02-11?14:04??分水嶺分割算法\samp41.txt
?????文件????????1281??2016-03-31?10:03??分水嶺分割算法\step1.m
?????文件????????2105??2016-03-25?11:25??分水嶺分割算法\testwatershed.m
?????文件????????8501??2016-03-23?22:08??分水嶺分割算法\wateredalgorithm.m
?????文件????????1441??2016-03-24?21:19??分水嶺分割算法\watershed2.m