--- a/python/cvutils.py	Thu Sep 23 17:12:09 2010 -0400
+++ b/python/cvutils.py	Thu Sep 23 17:24:31 2010 -0400
@@ -51,6 +51,13 @@
         projected[1].append(pp[1])
     return projected
 
+def invertHomography(homography):
+    'Returns an inverted homography'
+    from numpy.linalg.linalg import inv
+    invH = inv(homography)
+    invH /= invH[2,2]
+    return invH
+
 class WorldSpaceData:
     '''Simple class for simple intersection outline'''
     def __init__(self, dimension, coordX, coordY):

--- a/python/storage.py	Thu Sep 23 17:12:09 2010 -0400
+++ b/python/storage.py	Thu Sep 23 17:24:31 2010 -0400
@@ -85,16 +85,6 @@
         
     out.close()
 
-# other functions
-def getLines(f):
-    '''Gets a complete entry (all the lines) in between delimiterChar.'''
-    dataStrings = []
-    s = utils.myreadline(f)
-    while (len(s) > 0) and (not s.startswith(delimiterChar)):
-        dataStrings += [s.strip()]
-        s = utils.myreadline(f)
-    return dataStrings
-
 
 
 

--- a/python/ubc_utils.py	Thu Sep 23 17:12:09 2010 -0400
+++ b/python/ubc_utils.py	Thu Sep 23 17:24:31 2010 -0400
@@ -6,8 +6,6 @@
 
 __metaclass__ = type
 
-delimiterChar = '%';
-
 def getFileType(s):
     filePrefix = utils.removeExtension(s)
     i = filePrefix.rfind('-')
@@ -16,16 +14,7 @@
     else:
         return ''
 
-def getLines(f):
-    '''Gets a complete entry (all the lines) in between delimiterChar.'''
-    dataStrings = []
-    s = utils.readline(f)
-    while (len(s) > 0) and (not s.startswith(delimiterChar)):
-        dataStrings += [s.strip()]
-        s = utils.readline(f)
-    return dataStrings
-
-def saveTrajectorieUserTypes(inFilename, outFilename, objects):
+def saveTrajectoryUserTypes(inFilename, outFilename, objects):
     '''The program saves the objects, 
     by just copying the corresponding trajectory and velocity data
     from the inFilename, and saving the characteristics in objects (first line)
@@ -36,7 +25,7 @@
     if (not infile) | (not outfile):
         return
 
-    lines = getLines(file)
+    lines = utils.getLines(infile)
     objNum = 0
     while lines != []:
         i = 0
@@ -47,6 +36,7 @@
             outfile.write()
         # next object
         objNum += 1
+        lines = utils.getLines(infile)
 
 def loadTrajectories(filename, nObjects = -1):
     '''Loads trajectories'''
@@ -58,7 +48,7 @@
     objects = []
     objNum = 0
     objectType = getFileType(filename)
-    lines = getLines(file)
+    lines = utils.getLines(file)
     while (lines != []) and ((nObjects<0) or (objNum<nObjects)):
         l = lines[0].split(' ')
         parsedLine = [int(n) for n in l[:4]]
@@ -88,7 +78,7 @@
         else:
             print("Error two lines of data for feature %d"%(f.num))
 
-        lines = getLines(file)
+        lines = utils.getLines(file)
 
     file.close()
     return objects
@@ -102,7 +92,7 @@
 
     points = {}
     num = 0
-    lines = getLines(file)
+    lines = utils.getLines(file)
     while (lines != []) and ((nPoints<0) or (num<nPoints)):
         parsedLine = [int(n) for n in lines[0].split(' ')]
         protagonistNums = (parsedLine[0], parsedLine[1])
@@ -110,7 +100,7 @@
                                    [float(n) for n in lines[2].split(' ')]]
 
         num+=1
-        lines = getLines(file)
+        lines = utils.getLines(file)
 
     file.close()
     return points

--- a/python/utils.py	Thu Sep 23 17:12:09 2010 -0400
+++ b/python/utils.py	Thu Sep 23 17:24:31 2010 -0400
@@ -10,6 +10,8 @@
 
 commentChar = '#'
 
+delimiterChar = '%';
+
 #########################
 # simple statistics
 #########################
@@ -146,13 +148,22 @@
             exit()
         return None
 
-def readline(f):
+def readline(f, commentCharacter = commentChar):
     '''Modified readline function to skip comments.'''
     s = f.readline()
-    while (len(s) > 0) and s.startswith(commentChar):
+    while (len(s) > 0) and s.startswith(commentCharacter):
         s = f.readline()
     return s.strip()
 
+def getLines(f, delimiterCharacter = delimiterChar):
+    '''Gets a complete entry (all the lines) in between delimiterChar.'''
+    dataStrings = []
+    s = readline(f)
+    while (len(s) > 0) and (not s.startswith(delimiterCharacter)):
+        dataStrings += [s.strip()]
+        s = readline(f)
+    return dataStrings
+
 def removeExtension(filename, delimiter = '.'):
     '''Returns the filename minus the extension (all characters after last .)'''
     i = filename.rfind(delimiter)
@@ -182,13 +193,6 @@
     if (os.path.exists(filename)):
         os.remove(filename)
 
-def invertHomography(homography):
-    'Returns an inverted homography'
-    from numpy.linalg.linalg import inv
-    invH = inv(homography)
-    invH /= invH[2,2]
-    return invH
-
 def plotPolygon(poly, options = ''):
     from numpy.core.multiarray import array
     from matplotlib.pyplot import plot