public Fit getTendance(){
String nomY = jcY.getSelectedItem().toString();
String nomX = jcX.getSelectedItem().toString();
int type = jcType.getSelectedIndex();
TendanceType tt = TendanceType.numeroToTendanceType(type);
boolean prolongLine = jcDroite.isSelected();
SpinnerNumberModel model = (SpinnerNumberModel) jsDegres.getModel();
int degre = model.getNumber().intValue();
String expression = jtfsExpression.getText();
boolean manuelle = jcType.getSelectedIndex() == jcType.getItemCount() - 1;