fixed error when only 1 incl/excl pair specified.

Numpy reads file as a vector in that case and it needed to be reshaped.
Had missed it out while reading incl/excl pairs.
Seems to be fine at other places.

Author: tanmaykm

CHANGES.txt

@@ -1,2 +1,3 @@
-v4.0.1,      28 Mar 2013 -- Stable version with bug fixes and user interface tweaks.
+v4.0.3,      06 Apr 2014 -- Fixed batch mode for GUI 
+v4.0.1,      28 Mar 2014 -- Stable version with bug fixes and user interface tweaks.
 v4.0.0-beta, 25 Nov 2013 -- Beta release

circuitscape/io.py

@@ -457,6 +457,10 @@ def read_included_pairs(filename):
                     mode = string.split(f.readline())[1]
                 pair_list = np.loadtxt(filename, skiprows=1, dtype='int32')
                 point_ids = np.unique(pair_list)
+                if len(pair_list.shape) == 1:
+                    pl = np.zeros((1,2))
+                    pl[0,:] = pair_list
+                    pair_list = pl
 
             I = pair_list[:,0]
             J = pair_list[:,1]