Initial groundwork for calling a model within a model

xija/component/base.py

@@ -330,6 +330,24 @@ def plot_resid__data(self, fig, ax):
             lines[0].set_ydata(resids)
 
 
+class ModeledData(ModelComponent):
+    def __init__(self, model, name, modeled_msid, model_spec):
+        from xija.model import XijaModel
+        super().__init__(model)
+        self.modeled_msid = modeled_msid
+        self.model2 = XijaModel(name, start=self.model.datestart,
+                                stop=self.model.datestop,
+                                model_spec=model_spec)
+        self.model2.make()
+        self.model2.calc()
+
+    def get_dvals_tlm(self):
+        return self.model2.comp[self.modeled_msid].mvals
+
+    def __str__(self):
+        return self.modeled_msid
+
+
 class Coupling(ModelComponent):
     """\
     First-order coupling between Nodes `node1` and `node2`