with '0' error when making cookbook

qda.sg

CSVFile f_feats_train("../../data/classifier_4class_2d_linear_features_train.dat")
CSVFile f_feats_test("../../data/classifier_4class_2d_linear_features_test.dat")
CSVFile f_labels_train("../../data/classifier_4class_2d_linear_labels_train.dat")
CSVFile f_labels_test("../../data/classifier_4class_2d_linear_labels_test.dat")

#![create_features]
RealFeatures features_train(f_feats_train)
RealFeatures features_test(f_feats_test)
MulticlassLabels labels_train(f_labels_train)
MulticlassLabels labels_test(f_labels_test)
#![create_features]

#![create_instance]
QDA qda(features_train, labels_train)
#![create_instance]

#![train_and_apply]
qda.train()
MulticlassLabels labels_predict = qda.apply_multiclass(features_test)
#![train_and_apply]

#![extract_mean_and_cov]
int classlabel = 0
RealVector m = qda.get_mean(classlabel)
#![train_and_apply]

#![evaluate_accuracy]
MulticlassAccuracy eval()
real accuracy = eval.evaluate(labels_predict, labels_test)
#![evaluate_accuracy]

# additional integration testing variables
RealVector output = labels_predict.get_labels()

I dont get this in latest develop
EDIT: I do get the error .... on it

See email I wrote to @sorig

One potential fix would be to change t_NUMERAL = "([1-9][0-9]*(\.[0-9]+)?)|0\.[0-9]+" in generator/parse.py to t_NUMERAL = "([0-9][0-9]*(\.[0-9]+)?)|0\.[0-9]+"

For now, we can just use class index 1