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matrix_fill.py
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matrix_fill.py
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import csv
def fill_empty():
input_file = open('values2.csv', 'r')
reader1 = csv.reader(input_file)
output_file = open('interpolated_output.csv', 'w', newline='')
csv_write1 = csv.writer(output_file, delimiter = ',')
matrix1 = [] # store the values from 'input file'
for i in reader1:
matrix1.append([])
j = 0
while (j < len(i)):
try:
float(i[j])
matrix1[-1].append(float(i[j]))
except:
matrix1[-1].append(i[j])
j = j + 1
i = 0
while (i < 2):
matrix1_X = []
matrix1_Y = []
i1 = 0
while (i1 < len(matrix1)):
i2 = 0
matrix1_X.append([])
while (i2 < len(matrix1[i1])):
matrix1_X[i1].append(matrix1[i1][i2])
i2 = i2 + 1
i1 = i1 + 1
i1 = 0
while (i1 < len(matrix1)):
i2 = 0
matrix1_Y.append([])
while (i2 < len(matrix1[i1])):
matrix1_Y[i1].append(matrix1[i1][i2])
i2 = i2 + 1
i1 = i1 + 1
limit1 = 0
limit2 = 0
i1 = 0
div = 0
pos = 0
# fill on Y axis
while (i1 < len(matrix1_Y)):
i2 = 0
state = []
while (i2 < len(matrix1_Y[0])):
state.append(1)
i2 = i2 + 1
i2 = 0
while (i2 < len(matrix1_Y[i1])):
if type(matrix1_Y[i1][i2]) == str:
state[i2] = -1
i2 = i2 + 1
if state.count(1) > 1:
i2 = 0
prev_limit2 = i2 # previous limit2
while (i2 < len(state) - 1):
if state[i2] == 1:
limit1 = i2
pos = limit1 + 1
while (pos < len(state)):
if state[pos] == 1:
limit2 = pos
break
else:
pos = pos + 1
# complete the second part in this loop
if limit2 > prev_limit2:
div = abs(matrix1_Y[i1][limit1] - matrix1_Y[i1][limit2]) / abs(limit1 - limit2)
i3 = limit1 + 1
if matrix1_Y[i1][limit1] <= matrix1_Y[i1][limit2]:
while (i3 < limit2):
matrix1_Y[i1][i3] = matrix1_Y[i1][i3 - 1] + div
state[i3] = 1
i3 = i3 + 1
else:
while (i3 < limit2):
matrix1_Y[i1][i3] = matrix1_Y[i1][i3 - 1] - div
state[i3] = 1
i3 = i3 + 1
prev_limit2 = limit2
i2 = limit2 # the new iteration of i2 will start from this position
else:
break
else:
i2 = i2 + 1
if state.__contains__(-1) == True:
#fill the positions having neighbours in only one side
# repeat the differences recorded in the neighbours to fill up these positions
diff_list = [] # list to store the differences between different points in series
i2 = 0
while (i2 < len(matrix1_Y[i1])):
if type(matrix1_Y[i1][i2]) != str:
while (type(matrix1_Y[i1][i2]) != str):
if i2 + 1 == len(matrix1_Y[i1]) or type(matrix1_Y[i1][i2 + 1]) == str:
break
else:
diff_list.append(matrix1_Y[i1][i2] - matrix1_Y[i1][i2 + 1])
i2 = i2 + 1
#break
i2 = i2 + 1
else:
i2 = i2 + 1
i2 = 0
pos = i2 # here 'pos' will store the first non empty position
while (i2 < len(matrix1_Y[i1])):
if type(matrix1_Y[i1][i2]) != str:
pos = i2
break
i2 = i2 + 1
direction = 0 # 0 -> top to bottom; 1 -> bottom to top
i2 = 0
while (pos > 0):
if direction == 0:
if i2 < len(diff_list) - 1:
matrix1_Y[i1][pos - 1] = matrix1_Y[i1][pos] + diff_list[i2]
i2 = i2 + 1
if i2 == len(diff_list) - 1:
matrix1_Y[i1][pos - 1] = matrix1_Y[i1][pos] + diff_list[i2]
direction = 1
else: # direction = 1
if i2 > 0:
matrix1_Y[i1][pos - 1] = matrix1_Y[i1][pos] + diff_list[i2]
i2 = i2 - 1
if i2 == 0:
matrix1_Y[i1][pos - 1] = matrix1_Y[i1][pos] + diff_list[i2]
direction = 0
pos = pos - 1
i2 = len(matrix1_Y[i1]) - 1
pos = i2 # here 'pos' will store the last non empty position
while (i2 >= 0):
if type(matrix1_Y[i1][i2]) != str:
pos = i2
break
i2 = i2 - 1
pos = pos + 1
direction = 1 # 0 -> top to bottom; 1 -> bottom to top
i2 = len(diff_list) - 1
while (pos < len(matrix1_Y[i1])): # need a loop for controlling the iterations of i2
if direction == 0:
if i2 < len(diff_list) - 1:
matrix1_Y[i1][pos] = matrix1_Y[i1][pos - 1] - diff_list[i2]
i2 = i2 + 1
if i2 == len(diff_list) - 1:
matrix1_Y[i1][pos] = matrix1_Y[i1][pos - 1] - diff_list[i2]
direction = 1
else: # direction = 1
if i2 > 0:
matrix1_Y[i1][pos] = matrix1_Y[i1][pos - 1] - diff_list[i2]
i2 = i2 - 1
if i2 == 0:
matrix1_Y[i1][pos] = matrix1_Y[i1][pos - 1] - diff_list[i2]
direction = 0
pos = pos + 1
# eg: pos_0 = pos_1 + (diff_list[0] with its assigned sign (+ or -))
# once diff_list iteration completes then repeat in reverse order
# if position == len(diff_list) - 1 then start position from len(diff_list) - 1 till 0
i1 = i1 + 1
limit1 = 0
limit2 = 0
i1 = 0
div = 0
pos = 0
# fill on X axis
while (i1 < len(matrix1_X[0])):
i2 = 0
state = []
while (i2 < len(matrix1_X)):
state.append(1)
i2 = i2 + 1
i2 = 0
while (i2 < len(matrix1_X)):
if type(matrix1_X[i2][i1]) == str:
state[i2] = -1
i2 = i2 + 1
if state.count(1) > 1:
i2 = 0
prev_limit2 = i2 # previous limit2
while (i2 < len(state) - 1):
if state[i2] == 1:
limit1 = i2
pos = limit1 + 1
while (pos < len(state)):
if state[pos] == 1:
limit2 = pos
break
else:
pos = pos + 1
# complete the second part in this loop
if limit2 > prev_limit2:
div = abs(matrix1_X[limit1][i1] - matrix1_X[limit2][i1]) / abs(limit1 - limit2)
i3 = limit1 + 1
if matrix1_X[limit1][i1] <= matrix1_X[limit2][i1]:
while (i3 < limit2):
matrix1_X[i3][i1] = matrix1_X[i3 - 1][i1] + div
state[i3] = 1
i3 = i3 + 1
else:
while (i3 < limit2):
matrix1_X[i3][i1] = matrix1_X[i3 - 1][i1] - div
state[i3] = 1
i3 = i3 + 1
prev_limit2 = limit2
i2 = limit2 # the new iteration of i2 will start from this position
else:
break
else:
i2 = i2 + 1
if state.__contains__(-1) == True:
#fill the positions having neighbours in only one side
# repeat the differences recorded in the neighbours to fill up these positions
diff_list = [] # list to store the differences between different points in series
i2 = 0
while (i2 < len(matrix1_X)):
if type(matrix1_X[i2][i1]) != str:
while (type(matrix1_X[i2][i1]) != str):
if i2 + 1 == len(matrix1_X) or type(matrix1_X[i2 + 1][i1]) == str:
break
else:
diff_list.append(matrix1_X[i2][i1] - matrix1_X[i2 + 1][i1])
i2 = i2 + 1
#break
i2 = i2 + 1
else:
i2 = i2 + 1
i2 = 0
pos = i2 # here 'pos' will store the first non empty position
while (i2 < len(matrix1_X)):
if type(matrix1_X[i2][i1]) != str:
pos = i2
break
i2 = i2 + 1
direction = 0 # 0 -> top to bottom; 1 -> bottom to top
i2 = 0
while (pos > 0):
if direction == 0:
if i2 < len(diff_list) - 1:
matrix1_X[pos - 1][i1] = matrix1_X[pos][i1] + diff_list[i2]
i2 = i2 + 1
if i2 == len(diff_list) - 1:
matrix1_X[pos - 1][i1] = matrix1_X[pos][i1] + diff_list[i2]
direction = 1
else: # direction = 1
if i2 > 0:
matrix1_X[pos - 1][i1] = matrix1_X[pos][i1] + diff_list[i2]
i2 = i2 - 1
if i2 == 0:
matrix1_X[pos - 1][i1] = matrix1_X[pos][i1] + diff_list[i2]
direction = 0
pos = pos - 1
i2 = len(matrix1_X) - 1
pos = i2 # here 'pos' will store the last non empty position
while (i2 >= 0):
if type(matrix1_X[i2][i1]) != str:
pos = i2
break
i2 = i2 - 1
pos = pos + 1
direction = 1 # 0 -> top to bottom; 1 -> bottom to top
i2 = len(diff_list) - 1
while (pos < len(matrix1_X)):
if direction == 0:
if i2 < len(diff_list) - 1:
matrix1_X[pos][i1] = matrix1_X[pos - 1][i1] - diff_list[i2]
i2 = i2 + 1
if i2 == len(diff_list) - 1:
matrix1_X[pos][i1] = matrix1_X[pos - 1][i1] - diff_list[i2]
direction = 1
else: # direction = 1
if i2 > 0:
matrix1_X[pos][i1] = matrix1_X[pos - 1][i1] - diff_list[i2]
i2 = i2 - 1
if i2 == 0:
matrix1_X[pos][i1] = matrix1_X[pos - 1][i1] - diff_list[i2]
direction = 0
pos = pos + 1
# eg: pos_0 = pos_1 + (diff_list[0] with its assigned sign (+ or -))
# once diff_list iteration completes then repeat in reverse order
# if position == len(diff_list) - 1 then start position from len(diff_list) - 1 till 0
i1 = i1 + 1
# Added points
i1 = 0
while (i1 < len(matrix1)):
i2 = 0
while (i2 < len(matrix1[i1])):
if type(matrix1[i1][i2]) == str:
if type(matrix1_X[i1][i2]) != str and type(matrix1_Y[i1][i2]) != str:
matrix1[i1][i2] = (matrix1_X[i1][i2] + matrix1_Y[i1][i2]) / 2
elif type(matrix1_X[i1][i2]) != str and type(matrix1_Y[i1][i2]) == str:
matrix1[i1][i2] = matrix1_X[i1][i2]
elif type(matrix1_X[i1][i2]) == str and type(matrix1_Y[i1][i2]) != str:
matrix1[i1][i2] = matrix1_Y[i1][i2]
i2 = i2 + 1
i1 = i1 + 1
i = i + 1
# write to file:
for i in matrix1:
csv_write1.writerow(i)
fill_empty()