Initial work on bringing mag into simpeg framework

simpegPF/BaseMag.py

@@ -0,0 +1,36 @@
+from SimPEG import Model, Data, np, sp
+from scipy.constants import mu_0
+
+
+class BaseMagData(Data.BaseData):
+    """Base Magnetics Data"""
+
+    rxLoc = None #: receiver locations
+    rxType = None #: receiver type
+
+    def __init__(self, **kwargs):
+        Data.BaseData.__init__(**kwargs)
+
+
+    #TODO: change to inc, dec, intensity
+    def setBackgroundField(self, x, y, z):
+        # Primary field in x-direction (background)
+        self.B0 = np.r_[1.,0,0]
+
+
+class BaseMagModel(Model.BaseModel):
+    """BaseMagModel"""
+
+    def __init__(self, mesh, **kwargs):
+        Model.BaseModel.__init__(mesh, **kwargs)
+
+    def transform(self, m, asMu=True):
+        if asMu:
+            return mu_0*(1 + m)
+        return m
+
+    def transformDeriv(self, m, asMu=True):
+        if asMu:
+            return mu_0*sp.identity(self.nP)
+        return sp.identity(self.nP)
+