From 9a5e73c493772388163ef3def4c066890219e2d3 Mon Sep 17 00:00:00 2001
From: Craig Warren <craig_warren@me.com>
Date: Fri, 16 Sep 2016 17:39:33 +0100
Subject: [PATCH] Corrected bug with opening file to append data in text mode
 rather than binary.

---
 gprMax/snapshots.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gprMax/snapshots.py b/gprMax/snapshots.py
index 37966717..706413b7 100644
--- a/gprMax/snapshots.py
+++ b/gprMax/snapshots.py
@@ -120,7 +120,7 @@ class Snapshot(object):
             pbar (class): Progress bar class instance.
         """
 
-        self.filehandle = open(self.filename, 'a')
+        self.filehandle = open(self.filename, 'ab')
 
         datasize = 3 * np.dtype(floattype).itemsize * (self.vtk_xfcells - self.vtk_xscells) * (self.vtk_yfcells - self.vtk_yscells) * (self.vtk_zfcells - self.vtk_zscells)
         # Write number of bytes of appended data as UInt32