add the function of saving all the parameters into a HDF5 file

GPy/core/parameterization/parameter_core.py

@@ -1009,3 +1009,28 @@ class Parameterizable(OptimizationHandlable):
         updates get passed through. See :py:function:``GPy.core.param.Observable.add_observer``
         """
         pass
+
+    def save_params_H5(self, filename):
+        """
+        Save all the model parameters into a HDF5 file.
+        """
+        from . import Param
+        from ...util.misc import param_to_array
+        def gather_params(self, plist):
+            if isinstance(self,Param):
+                plist.append(self)
+        plist = []
+        self.traverse(gather_params, plist)
+        names = self.parameter_names(adjust_for_printing=True)
+        try:
+            import h5py
+            f = h5py.File(filename,'w')
+            for p,n in zip(plist,names):
+                n = n.replace('.','_')
+                p = param_to_array(p)
+                d = f.create_dataset(n,p.shape,dtype=p.dtype)
+                d[:] = p
+            f.close()
+        except:
+            raise 'Fails to write the parameters into a HDF5 file!'
+