function?[overall_accuracykappa_accuracyaverage_accuracyclass_accuracyerrorMatrix]?=?calcError（?trueLabelling?segLabelling?labels?）
%?calculates?square?array?of?numbers?organized?in?rows?and?columns?which?express?the
%?percentage?of?pixels?assigned?to?a?particular?category?（in?segLabelling）?relative
%?to?the?actual?category?as?indicated?by?reference?data?（trueLabelling）
%?errorMatrix（ij）?=?nr?of?pixels?that?are?of?class?i-1?and?were
%?classified?as?class?j-1
%?accuracy?is?essentially?a?measure?of?how?many?ground?truth?pixels?were?classified
%?correctly?（in?percentage）.?
%?average?accuracy?is?the?average?of?the?accuracies?for?each?class
%?overall?accuracy?is?the?accuracy?of?each?class?weighted?by?the?proportion
%?of?test?samples?for?that?class?in?the?total?training?set

[nrX?nrY]?=?size（trueLabelling）;
totNrPixels?=?nrX*nrY;
nrPixelsPerClass?=?zeros（1length（labels））‘;
nrClasses?=?length（labels）;

errorMatrix?=?zeros（length（labels）length（labels））;
errorMatrixPerc?=?zeros（length（labels）length（labels））;

for?l_true=1:length（labels）
????tmp_true?=?find?（trueLabelling?==?（l_true-1））;
????nrPixelsPerClass（l_true）?=?length（tmp_true）;
????for?l_seg=1:length（labels）
????????tmp_seg?=?find?（segLabelling?==?（l_seg-1））;
????????nrPixels?=?length（intersect（tmp_truetmp_seg））;
????????errorMatrix（l_truel_seg）?=?nrPixels;??
????end
end

%?classWeight?=?nrPixelsPerClass/totNrPixels;
diagVector?=?diag（errorMatrix）;
class_accuracy?=?（diagVector./（nrPixelsPerClass+eps））;
average_accuracy?=?mean（class_accuracy‘）;
overall_accuracy?=?sum（segLabelling?==?trueLabelling）/length（trueLabelling）;
kappa_accuracy?=?（sum（errorMatrix（:））*sum（diag（errorMatrix））?-?sum（errorMatrix）*sum（errorMatrix2））...
????/（sum（errorMatrix（:））^2?-??sum（errorMatrix）*sum（errorMatrix2））;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-02-07?16:17??demo2SVM\
?????文件???????19878??2016-11-22?18:17??demo2SVM\AVIRIS_Indiana_16class.mat
?????文件?????????265??2016-11-29?12:07??demo2SVM\COVARIANCE.m
?????目錄???????????0??2017-02-07?16:17??demo2SVM\LibSVM\
?????文件????????5628??2016-11-22?18:19??demo2SVM\LibSVM\boiler_process.m
?????文件????????6451??2016-11-22?18:19??demo2SVM\LibSVM\classify_svm.m
?????文件????????2875??2016-11-22?18:19??demo2SVM\LibSVM\epsSVM.m
?????文件???????16304??2016-11-22?18:19??demo2SVM\LibSVM\generateLibSVMcmd.m
?????文件????????1009??2016-11-22?18:19??demo2SVM\LibSVM\getDefaultParam_libSVM.m
?????文件????????1573??2016-11-22?18:19??demo2SVM\LibSVM\getPatterns.m
?????文件???????11264??2016-11-22?18:19??demo2SVM\LibSVM\libsvmread.mexw64
?????文件???????10240??2016-11-22?18:19??demo2SVM\LibSVM\libsvmwrite.mexw64
?????文件????????5549??2016-11-22?18:18??demo2SVM\LibSVM\mapminmax.m
?????文件????????5208??2016-11-22?18:18??demo2SVM\LibSVM\mapstd.m
?????文件???????12259??2016-11-22?18:18??demo2SVM\LibSVM\modsel.m
?????文件????????3003??2016-11-22?18:18??demo2SVM\LibSVM\modsel_unbalanced.m
?????文件????????1027??2016-11-22?18:18??demo2SVM\LibSVM\myUsingLIBSVM.m
?????文件????????5054??2016-11-22?18:18??demo2SVM\LibSVM\removeconstantrows.m
?????文件???????25600??2016-11-22?18:18??demo2SVM\LibSVM\svmpredict.mexw64
?????文件???????64000??2016-11-22?18:18??demo2SVM\LibSVM\svmtrain.mexw64
?????文件?????????349??2016-11-25?21:37??demo2SVM\MEAN.m
?????文件?????????488??2016-11-25?13:04??demo2SVM\PCA.m
?????文件????????2016??2016-11-29?20:01??demo2SVM\SAJMdist.m
?????文件????????2028??2016-12-24?21:41??demo2SVM\SVM_AVIRIS.m
?????文件????????1771??2016-11-29?19:58??demo2SVM\SubDist.m
?????文件?????????103??2016-11-22?18:17??demo2SVM\ToMatrix.m
?????文件?????????142??2016-11-22?18:17??demo2SVM\ToVector.m
?????文件????????1789??2016-11-22?18:17??demo2SVM\calcError.m
?????文件????????2097??2016-11-29?20:06??demo2SVM\featureSVM.m
?????文件?????5975952??2016-11-22?18:20??demo2SVM\imgreal.mat
?????文件????????2021??2016-12-15?10:13??demo2SVM\svmtest1.m
............此處省略2個文件信息