function?D=envidataread（datafileinfo）
%ENVIDATAREAD?Reads?data?of?ENVI?image?file?according?to?ENVI?image?file?header?information.
%D=ENVIDATAREAD（DATAFILEINFO）?provides?image?data?（D）.
%D?will?be?in?whatever?number?format?（double?int?etc.）?as?in?the?ENVI
%file.

%Original?version?by?Ian?Howat?Ohio?State?Universtiy?ihowat@gmail.com
%Thanks?to?Yushin?Ahn?and?Ray?Jung
%Heavily?modified?by?Felix?Totir.

if?nargin?????error（‘You?must?specify?the?information?about?data?（output?of?envihdrread）‘）;
end

%-improved-?assert（info.header_offset==0‘Non-zero?header?offset?not?supported‘）;

%%?Set?binary?format?parameters
switch?info.byte_order
????case?{0}
????????machine?=?‘ieee-le‘;
????case?{1}
????????machine?=?‘ieee-be‘;
????otherwise
????????machine?=?‘n‘;
end

iscx=false;?%if?it?is?complex
switch?info.data_type
????case?{1}
????????format?=?‘uint8‘;
????case?{2}
????????format=?‘int16‘;
????case{3}
????????format=?‘int32‘;
????case?{4}
????????format=?‘single‘;
????case?{5}
????????format=?‘double‘;
????case?{6}
????????iscx=true;
????????format=?‘single‘;
????case?{9}
????????iscx=true;
????????format=?‘double‘;
????case?{12}
????????format=?‘uint16‘;
????case?{13}
????????format=?‘uint32‘;
????case?{14}
????????format=?‘int64‘;
????case?{15}
????????format=?‘uint64‘;
????otherwise
????????error（[‘File?type?number:?‘num2str（dtype）‘?not?supported‘]）;
end

%?***?BSQ?Format?***
%?[Band?1]
%?R1:?C1?C2?C3?...
%?R2:?C1?C2?C3?...
%??...
%?RN:?C1?C2?C3?...
%
%?[Band?2]
%??...
%?[Band?N]

%?***?BIL?Format?***
%?[Row?1]
%?B1:?C1?C2?C3?...
%?B2:?C1?C2?C3?...
%
%??...
%?[Row?N]

%?***?BIP?Format?***
%?Row?1
%?C1:?B1?B2?B3?...
%?C2:?B1?B2?B3?...
%?...
%?Row?N

n?=?info.lines*info.samples*info.bands;

fid=fopen（datafile‘r‘）;
fread（fidinfo.header_offset‘uint8‘0machine）;?%we?skip?the?header
if?~iscx
????D?=?fread（fidnformat0machine）;?%alternatively?multibandreader?（matlab?function）?might?be?used
else
????D?=?fread（fid2*nformat0machine）;?%alternatively?multibandreader?（matlab?function）?might?be?used
????D?=?complex（D（1:2:end）D（2:2:end））;
end
fclose（fid）;
????
switch?lower（info.interleave）
????case?{‘bsq‘}
????????D?=?reshape（D[info.samplesinfo.linesinfo.bands]）;
????????D?=?permute（D[213]）;
????case?{‘bil‘}
????????D?=?reshape（D[info.samplesinfo.bandsinfo.lines]）;
????????D?=?permute（D[312]）;
????case?{‘bip‘}
????????D?=?reshape（D[info.bandsinfo.samplesinfo.lines]）;
????????D=permute（D[321]）;
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-05-05?15:55??envi\
?????文件?????????384??2019-04-03?13:25??envi\a.dat
?????文件?????????166??2019-04-03?13:25??envi\a.dat.hdr
?????文件???????10384??2019-04-03?13:25??envi\a3.dat
?????文件?????????170??2019-04-03?13:25??envi\a3.dat.hdr
?????文件????????2484??2017-11-10?17:04??envi\envidataread.m
?????文件????????2689??2017-11-10?17:04??envi\envidatawrite.m
?????文件????????3991??2017-11-10?17:04??envi\envihdrread.m
?????文件????????1195??2017-11-10?17:04??envi\envihdrwrite.m
?????文件????????1516??2017-11-10?17:04??envi\enviinfo.m
?????文件?????????740??2017-11-10?17:04??envi\enviread.m
?????文件?????????701??2017-11-10?17:04??envi\enviwrite.m
?????文件?????????319??2017-11-10?17:04??envi\envi_test.m
?????目錄???????????0??2019-05-05?15:54??libsvm-3.23\
?????文件????????1497??2018-07-15?22:16??libsvm-3.23\COPYRIGHT
?????文件???????83238??2018-07-15?22:16??libsvm-3.23\FAQ.html
?????文件???????27670??2018-07-15?22:16??libsvm-3.23\heart_scale
?????文件??????258048??2018-07-15?22:16??libsvm-3.23\libsvm.dll
?????文件????????4060??2018-07-15?22:16??libsvm-3.23\libsvmread.c
?????文件???????14336??2018-07-15?22:16??libsvm-3.23\libsvmread.mexw64
?????文件????????2326??2018-07-15?22:16??libsvm-3.23\libsvmwrite.c
?????文件???????13312??2018-07-15?22:16??libsvm-3.23\libsvmwrite.mexw64
?????文件?????????888??2018-07-15?22:16??libsvm-3.23\make.m
?????文件????????1240??2018-07-15?22:16??libsvm-3.23\Makefile
?????文件????????1135??2018-07-15?22:16??libsvm-3.23\Makefile.win
?????文件????????9815??2018-07-15?22:16??libsvm-3.23\README
?????文件????????5537??2018-07-15?22:16??libsvm-3.23\svm-predict.c
?????文件????????8696??2018-07-15?22:16??libsvm-3.23\svm-scale.c
?????文件????????8985??2018-07-15?22:16??libsvm-3.23\svm-train.c
?????文件???????65036??2018-07-15?22:16??libsvm-3.23\svm.cpp
?????文件?????????477??2018-07-15?22:16??libsvm-3.23\svm.def
............此處省略17個文件信息