function formatransform(filename1 ,filename2,samplenumber)
%對文件filename(文件內樣本點數為samplenumer)進行格式轉換
fpr=fopen(filename1,'rt');
[class,count]=fscanf(fpr,'%f',[samplenumber,3]);
%fclose('all');
fpw=fopen(filename2,'wt');
for i=1:samplenumber
        for j=1:3
            fprintf(fpw,'%4d',class(i,j));
        end 
end
fclose('all');
disp('transformation succeed!');