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NormAndDenorm.py
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NormAndDenorm.py
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import pickle
minX = minY = 999.0
maxX = maxY = 0.0
def normalizeValues(x, y):
x = (x - minX) / (maxX - minX)
y = (y - minY) / (maxY - minY)
return x, y
def deNormalizeValues(x, y, minX, minY, maxX, maxY):
x = x * (maxX - minX) + minX
y = y * (maxY - minY) + minY
return x, y
def serializeNorm(xy, str):
labels = []
for x, y in xy:
labels.append(normalizeValues(x, y))
with open(str + '.lbl', 'wb') as f:
pickle.dump(labels, f)
def findMinMaxCoord(trainlabels, testlabels):
minX = minY = 999.0
maxX = maxY = 0.0
for x, y in trainlabels:
if x < minX:
minX = x
if x > maxX:
maxX = x
if y < minY:
minY = y
if y > maxY:
maxY = y
for x, y in testlabels:
if x < minX:
minX = x
if x > maxX:
maxX = x
if y < minY:
minY = y
if y > maxY:
maxY = y
# print(str(minX) + ', ' + str(maxX) + ', ' + str(minY) + ', ' + str(maxY))
return minX, minY, maxX, maxY
'''
# Open the lbl files
with open('train_labels.lbl', 'rb') as fa:
trainlabels = pickle.load(fa)
with open('test_labels.lbl', 'rb') as fe:
testlabels = pickle.load(fe)
'''
# Get coordinate bounds
#minX, minY, maxX, maxY = findMinMaxCoord(trainlabels, testlabels)
# Serialization into files
#serializeNorm(trainlabels, 'trainNorm', minX, minY, maxX, maxY)
#serializeNorm(testlabels, 'testNorm', minX, minY, maxX, maxY)
'''
# Check prints
with open('trainNorm.lbl', 'rb') as f:
f = pickle.load(f)
for i in range(len(f)):
print(str(f[i]))
with open('testNorm.lbl', 'rb') as f:
f = pickle.load(f)
for i in range(len(f)):
print(str(f[i]))
'''
with open('train_labels.lbl', 'rb') as fa:
trainlabels = pickle.load(fa)
with open('test_labels.lbl', 'rb') as fe:
testlabels = pickle.load(fe)
minimumX, minimumY, maximumX, maximumY = findMinMaxCoord(trainlabels, testlabels)
diffX = maximumX - minimumX
diffY = maximumY - minimumY
normalizedLongitude = 0.005470 / diffX
normalizedLatitude = 0.006306 / diffY
print("minX : " + str(minimumX))
print("maxX : " + str(maximumX))
print("minY : " + str(minimumY))
print("maxY : " + str(maximumY))
print("diffX : " + str(diffX))
print("diffY : " + str(diffY))
print("longitude (X): " + str(normalizedLongitude))
print("latitude (Y): " + str(normalizedLatitude))