Hi, when I try to run my libsvm the command window display an error wrong input format at line 1

function train

clear all; clc; % cross validation [label_vector,instance_matrix]=libsvmread('train_dw vs control.txt');

bestcv = 0; for log2c = -30:30, for log2g = -40:40, cmd = ['-v 5 -c ', num2str(2^log2c), ' -g ', num2str(2^log2g)]; cv = svmtrain(label_vector, instance_matrix, cmd); if (cv >= bestcv), bestcv = cv; bestc = 2^log2c; bestg = 2^log2g; end fprintf('%g %g %g (best c=%g, g=%g, rate=%g)\n', log2c, log2g, cv, bestc, bestg, bestcv); end end

% % % build model model=svmtrain(label_vector,instance_matrix,'-s 0 -t 2 -c 4 -d 3 -g 0.125 -e 0.0001');

% test_data [testlabel_vector,testinstance_matrix]=libsvmread('test_dw vs control.txt');

[predict_label,accuracy,dec_values]=svmpredict(testlabel_vector,testinstance_matrix,model);

fprintf('predict_label=%g, accuracy=%g,dec_values=%g)\n', predict_label,accuracy,dec_values);