From f8f18579a85b4629e64881fc1f01975adba13e49 Mon Sep 17 00:00:00 2001
From: Craig Warren <craig_warren@me.com>
Date: Fri, 6 May 2016 12:20:05 +0100
Subject: [PATCH] Updated to new-style classes.

---
 gprMax/materials.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gprMax/materials.py b/gprMax/materials.py
index ec88e5d6..e4590943 100644
--- a/gprMax/materials.py
+++ b/gprMax/materials.py
@@ -21,7 +21,7 @@ import numpy as np
 from gprMax.constants import e0, m0, floattype, complextype
 
 
-class Material():
+class Material(object):
     """Materials, their properties and update coefficients."""
     
     # Maximum number of dispersive material poles in a model
@@ -144,7 +144,7 @@ class Material():
             self.srce = 1 / EA
 
 
-class PeplinskiSoil:
+class PeplinskiSoil(object):
     """Soil objects that are characterised according to a mixing model by Peplinski (http://dx.doi.org/10.1109/36.387598)."""
     
     def __init__(self, ID, sandfraction, clayfraction, bulkdensity, sandpartdensity, watervolfraction):