获取除特定列的其他列的所有内容
clc;clear all;close all;
load('convex_subpixel_ptmean_03_SNR_30_sigma_1_Nb_2_Train')
wavelength=wavelength/1000;%为啥除1000呢
ZeroV = zeros([1 1000])
indices = find(GT==1)
w=X(1:211,setdiff(1:length(X), indices))
[A1,E_vca]=dan(w,'Endmembers',3)