[Gretl-devel] small issue with calling libsvm

Dear all, I am just experimenting with libsvm. Overall it works fine. However, see below an example where calling the svm() function fails. I try to provide an alternative epsilon value for an e-SV regression from the matrix epsval but obtain the error: <output> Data types not conformable for operation Error executing script: halting </output> <hansl> set verbose off open sw_ch14.gdt series infl = 400 * log(PUNEW/PUNEW(-1)) ntrain = 130 test1 = ntrain + 1 list L = infl LHUR(-1 to -3) infl(-1 to -3) smpl L --no-missing # works bundle parms = defbundle("n_train", ntrain, "quiet", 1) parms.kernel_type=2 parms.svm_type=3 parms.search=1 series yhat1 = svm(L, parms) # doesn't work matrix epsval = {0.5,1} # matrix of possible eps. values bundle parms = defbundle("n_train", ntrain, "quiet", 1) parms.kernel_type=2 parms.svm_type=3 parms.search=1 parms.epsilon=epsval[1] # error: doesnt recognize epsval[] as scalar series yhat2 = svm(L, parms) </hansl> Best, Artur