error using svmtrain (not enough inputs)
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i am using a code
clc
C=[1 2 3 ;4 5 6]
TrainLabel=C;TrainVec=[0;1];
bestcv = 0;
for log2c = -6:10,
for log2g = -6:3,
cmd = ['-v 5 -c ', num2str(2^log2c), ' -g ', num2str(2^log2g)];
cv = svmtrain(TrainLabel,TrainVec, cmd);
if (cv >= bestcv),
bestcv = cv; bestc = 2^log2c; bestg = 2^log2g;
end
fprintf('(best c=%g, g=%g, rate=%g)\n',bestc, bestg, bestcv);
end
end
i get error as
Error using ==> svmtrain at 225
Incorrect number of arguments to svmtrain.
Error in ==> ex2011 at 10
cv = svmtrain(TrainLabel,TrainVec, cmd);
please help were i have done mistake
回答（3 个）
Ilya
2012-4-5
0 个投票
If you are using svmtrain function from the official MATLAB install (verify by typing 'which svmtrain' in your command window), it does not accept the syntax of your cmd string. Please read 'help svmtrain' or 'doc svmtrain'.
Walter Roberson
2012-4-5
The Mathworks-provided svmtrain() does not accept an argument which is a single string with flags and values. Instead it accepts only name/value pairs, such as
svmtrain(TrainLabel,TrainVec, 'method', 'SMO')
The flags you use have no obvious correspondence in the supported name/value pairs.
ansha nisar
2021-8-12
0 个投票
How can I resolve this problem Error using svmtrain
1 个评论
Walter Roberson
2021-8-12
models{k} = fitcsvm(Trainfea, G1vAll, 'solver', 'SMO');
and later
if predict(models{k}, Testfea(j,:))
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2021-8-12
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