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Program_Code.py
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Program_Code.py
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from hrvanalysis import remove_outliers, remove_ectopic_beats, interpolate_nan_values, get_time_domain_features, get_frequency_domain_features, get_poincare_plot_features
import matplotlib.pyplot as plt
import math
import csv
import heartpy as hp
from heartpy import filter_signal
import os
import sys
def getSeizStartStopTimes(s):
seiz1 = [14.6, 16.2] #seiz start and stop times in minutes - stored as global variables
seiz2 = [62.7167, 63.7167, 175.85, 176.267]
seiz3 = [84.567, 86.367, 154.45, 156.283]
seiz4 = [20.167, 21.9167]
seiz5 = [24.1167, 25.5]
seiz6 = [51.4167, 52.3167, 124.75, 126.167]
seiz7 = [68.033, 69.5167]
if s == "01":
return seiz1
if s == "02":
return seiz2
if s == "03":
return seiz3
if s == "04":
return seiz4
if s == "05":
return seiz5
if s == "06":
return seiz6
if s == "07":
return seiz7
def getNonSeizStartStopTimes(s):
n1 = [32, 71]
n2 = [66,118]
n3 = [102, 175]
n4 = [40, 63]
n5 = [31, 70]
n6 = [70, 105]
n7 = [17, 42]
if s == "01":
return n1
if s == "02":
return n2
if s == "03":
return n3
if s == "04":
return n4
if s == "05":
return n5
if s == "06":
return n6
if s == "07":
return n7
#This method is only called in the removeEB method (supplement)
def getConditionedData():
RR1 = open((subject + "RRKubios.txt"), "r")
# rr_intervals_list contains integer values of RR-interval
rr_intervals_list = []
for line in RR1:
rr_intervals_list.append(float(line[0:5]) * 1000)
# Calculate time for original RR data
rr_intervals_time_list = []
for i in range(len(rr_intervals_list)):
if i == 0:
rr_intervals_time_list.append(rr_intervals_list[i])
else:
rr_intervals_time_list.append(rr_intervals_list[i] + rr_intervals_time_list[i - 1])
# This remove outliers from signal
rr_intervals_without_outliers = remove_outliers(rr_intervals=rr_intervals_list, low_rri=300, high_rri=2000)
# This replace outliers nan values with linear interpolation
interpolated_rr_intervals = interpolate_nan_values(rr_intervals=rr_intervals_without_outliers,
interpolation_method="linear")
# Calculated time for RR data without outliers
messedUp = []
interpolated_rr_intervals_time_list = []
for i in range(len(interpolated_rr_intervals)):
# If the interpolated rr value is nan, 0 is used as placeholder
if math.isnan(interpolated_rr_intervals[i]):
messedUp.append(i)
# NEW CHANGE: Instead of using 0 as a placeholder, find the average of the previous and after rr values or the closest rr value and use it as a placeholder
notNANindexBefore = i - 1
notNANindexAfter = i + 1
while notNANindexBefore > -1 and math.isnan(interpolated_rr_intervals[notNANindexBefore]):
# Makes notNANindexBefore the index of the first non-nan rr value before index i
notNANindexBefore -= 1
while notNANindexAfter < len(interpolated_rr_intervals) and math.isnan(
interpolated_rr_intervals[notNANindexAfter]):
# Makes notNANindexAfter the index of the first non-nan nn value after index i
notNANindexAfter += 1
if notNANindexBefore == -1: # If there is no non-nan RR value before index i...
rrPlaceHolder = interpolated_rr_intervals[notNANindexAfter]
elif notNANindexAfter == len(interpolated_rr_intervals): # If there is no non-nan RR value after index i...
rrPlaceHolder = interpolated_rr_intervals[notNANindexBefore]
else:
rrPlaceHolder = (interpolated_rr_intervals[notNANindexBefore] + interpolated_rr_intervals[
notNANindexAfter]) / 2
if i == 0:
interpolated_rr_intervals_time_list.append(rrPlaceHolder)
else:
interpolated_rr_intervals_time_list.append(rrPlaceHolder + interpolated_rr_intervals_time_list[i - 1])
else:
if i == 0:
interpolated_rr_intervals_time_list.append(interpolated_rr_intervals[i])
else:
interpolated_rr_intervals_time_list.append(
interpolated_rr_intervals[i] + interpolated_rr_intervals_time_list[i - 1])
for i in range(len(messedUp)): # ADDED: Makes sure all RR Data is non-nan
if messedUp[i] == 0:
interpolated_rr_intervals[messedUp[i]] = interpolated_rr_intervals_time_list[messedUp[i]]
else:
interpolated_rr_intervals[messedUp[i]] = interpolated_rr_intervals_time_list[messedUp[i]] = \
interpolated_rr_intervals_time_list[messedUp[i] - 1]
return interpolated_rr_intervals
def removeEB(data, methodType):
# This remove ectopic beats from signal
nn_intervals_list = remove_ectopic_beats(rr_intervals=data,
method=methodType) # NN is for Normal Interval (processed RR interval data)
# This replace ectopic beats nan values with linear interpolation
interpolated_nn_intervals = interpolate_nan_values(rr_intervals=nn_intervals_list)
# Calculated time for RR data without ectopic beats
messedUp2 = []
nn_intervals_time_list = []
for i in range(len(interpolated_nn_intervals)):
# If the interpolated nn value is nan, 0 is used as placeholder
if math.isnan(interpolated_nn_intervals[i]):
messedUp2.append(i)
# NEW CHANGE: Instead of using 0 as a placeholder, find the average of the previous and after NN values or the closest NN value and use it as a placeholder
notNANindexBefore2 = i - 1
notNANindexAfter2 = i + 1
while notNANindexBefore2 > -1 and math.isnan(interpolated_nn_intervals[notNANindexBefore2]):
# Makes notNANindexBefore2 the index of the first non-nan nn value before index i
notNANindexBefore2 -= 1
while notNANindexAfter2 < len(interpolated_nn_intervals) and math.isnan(
interpolated_nn_intervals[notNANindexAfter2]):
# Makes notNANindexAfter2 the index of the first non-nan nn value after index i
notNANindexAfter2 += 1
if notNANindexBefore2 == -1: # If there is no non-nan NN value before index i...
nnPlaceHolder = interpolated_nn_intervals[notNANindexAfter2]
elif notNANindexAfter2 == len(
interpolated_nn_intervals): # If there is no non-nan NN value after index i...
nnPlaceHolder = interpolated_nn_intervals[notNANindexBefore2]
else:
nnPlaceHolder = (interpolated_nn_intervals[notNANindexBefore2] + interpolated_nn_intervals[
notNANindexAfter2]) / 2
if i == 0:
nn_intervals_time_list.append(nnPlaceHolder)
else:
nn_intervals_time_list.append(nnPlaceHolder + nn_intervals_time_list[i - 1])
else:
if i == 0:
nn_intervals_time_list.append(interpolated_nn_intervals[i])
else:
nn_intervals_time_list.append(interpolated_nn_intervals[i] + nn_intervals_time_list[i - 1])
for i in range(len(messedUp2)): # ADDED: Makes sure all RR Data is non-nan
if messedUp2[i] == 0:
interpolated_nn_intervals[messedUp2[i]] = nn_intervals_time_list[messedUp2[i]]
else:
interpolated_nn_intervals[messedUp2[i]] = nn_intervals_time_list[messedUp2[i]] - nn_intervals_time_list[
messedUp2[i] - 1]
return nn_intervals_time_list, interpolated_nn_intervals
#This method is only called within the writeIntoExcel method (supplement)
def getFeatures(startMin, endMin, timeData, rrData):
dataLimitMsec = timeData[len(timeData) - 1]
startMSec = startMin * 60 * 1000
endMSec = endMin * 60 * 1000
if endMSec > dataLimitMsec:
print("End time is out of bounds! Using the end time of sample.")
endMSec = dataLimitMsec
startIndex = 0
endIndex = 0
for i in range(len(timeData)):
if timeData[i] >= startMSec:
startIndex = i
break
for i in range(len(timeData)):
if noEB3_time[i] <= endMSec:
endIndex = i
listInTimeFrame = [] # Makes list of NN intervals in given time frame
for i in range(startIndex, endIndex + 1):
listInTimeFrame.append(rrData[i])
# print(listInTimeFrame)
listOfFeatures = [] # Finds features of NN intervals in given time frame
listOfFeatures.append(
"Min " + str(timeData[startIndex] / 1000 / 60) + " to min " + str(timeData[endIndex] / 1000 / 60) + ": ")
listOfFeatures.append(get_time_domain_features(listInTimeFrame))
listOfFeatures.append(get_frequency_domain_features(listInTimeFrame))
listOfFeatures.append(get_poincare_plot_features(listInTimeFrame))
return listOfFeatures
#This method creates an excel file with the data of all the features for the inputted patient number - currently only called in the getFeatureGraphs method (supplemental)
def writeIntoExcel():
dataTimeLengthMsec = noEB3_time[len(noEB3_time)-1] #For use later on in the method to loop through the entire file
dataTimeLengthHr = dataTimeLengthMsec/1000/60/60
with open(subject +"FeaturesStep " + str(step) + " " + "Window " + str(window) + ".csv", "w",
newline='') as csvfile:
writer = csv.writer(csvfile, delimiter=',')
writer.writerow(header)
startMin = 0
if subject == "02":
startMin = 10
# This is the feature calculation window (the range)
endMin = startMin + window
#What each index in the list 'features' contains:
# Index 0 is the window range
# Index 1 is the time domain features
# Index 2 is the frequency domain features
# Index 3 is the poincare plot features
#This block of code writes each feature into excel
while (endMin * 60 * 1000) <= dataTimeLengthMsec:
features = getFeatures(startMin, endMin, noEB3_time, noEB3_data) #Use of the 'global' noEB3_time and noEB3_data variables
index = 2 # Starting here for csv file writing
timeDomainNumsOnly = [""] * 16 # 16 time domain elements
timeDomainNumsOnly.insert(0,
startMin) # Columns 1 and 2 are the start and end time for feature calculation of that row
timeDomainNumsOnly.insert(1, endMin)
for i in range(0, len(str(features[1]))): # loop through each character in the string
if ((str(features[1])[i: i + 1].isdigit() and i != 0 and i != 1 and (
not ("_" in str(features[1])[i - 2: i]))) or str(features[1])[
i: i + 1] == '.'): # If the substring is a digit
timeDomainNumsOnly[index] += str(features[1])[
i: i + 1] # append the numbers that are not feature values (not in the header, i.e. for category 'nni_50' - the 50 will NOT be appended to this list
elif (str(features[1])[i: i + 1] == ","):
index += 1
freqDomainNumsOnly = [""] * 7 # 7 frequency domain elements
index2 = 0
for i in range(0, len(str(features[2]))):
if (str(features[2])[i: i + 1].isdigit() or str(features[2])[
i: i + 1] == '.'): # If the substring is a digit
freqDomainNumsOnly[index2] += str(features[2])[i: i + 1]
elif (str(features[2])[i: i + 1] == ","):
index2 += 1
poincarePlotNumsOnly = [""] * 3 # 3 poincare plot elements
index3 = 0
for i in range(0, len(str(features[3]))):
if ((str(features[3])[i: i + 1].isdigit() and i != 0 and i != 1 and (
not ("s" in str(features[3])[i - 2: i]))) or str(features[3])[
i: i + 1] == '.'): # If the substring is a digit
poincarePlotNumsOnly[index3] += str(features[3])[i: i + 1]
elif (str(features[3])[i: i + 1] == ","):
index3 += 1
poincarePlotNumsOnly.append('')
writer.writerow(
timeDomainNumsOnly + freqDomainNumsOnly + poincarePlotNumsOnly) # write the lists into the csv file
startMin += step
endMin += step
def normalizeList(dataToNormalize):
minValue = dataToNormalize[0]
for i in range(len(dataToNormalize)):
if minValue>dataToNormalize[i]:
minValue = dataToNormalize[i]
maxValue = dataToNormalize[0]
for i in range(len(dataToNormalize)):
if maxValue<dataToNormalize[i]:
maxValue = dataToNormalize[i]
listRange = maxValue-minValue
normalizedList = []
for i in range(len(dataToNormalize)):
normalizedList.append((dataToNormalize[i]-minValue)/listRange)
for i in range(len(normalizedList)):
normalizedList[i] = (normalizedList[i]*2)-1
return normalizedList
#Gives a list of lists for the values for each feature the user requested & also a list of values for the Start Time column in the excel file
def getFeatureValues():
writeIntoExcel() #Create excel file
#the indeces list is a list of indeces that contain the indeces in the excel file for the features the user requested
index = 2
indeces = []
for i in range(len(featuresList)):
for x in range(len(header)):
if (featuresList[i] == header[x]):
indeces.append(x)
break
if indeces == len(featuresList):
break
#values is a '2D' list that contains all the values for the features requested
values = []
fullData = [] #Fulldata is the entire data from the excel file as a '2D' list of strings
fileTEST = open(subject + "FeaturesStep " + str(step) + " " + "Window " + str(window) + ".csv", "r")
dataTEST = csv.reader(fileTEST)
for row in dataTEST:
fullData.append(row)
for i in indeces:
temp = []
for row in fullData:
if (not (row[i] == header[i])):
temp.append(float(row[i]))
values.append(temp)
fileTEST.close()
timesList = []
with open(subject + "FeaturesStep " + str(step) + " " + "Window " + str(window) + ".csv", "r") as csvdata:
data = csv.reader(csvdata)
for row in data:
if (not (row[0] == "Start Time")):
timesList.append(float(row[0])) # Append all Start Time vals into timesList
if normalized == "yes":
for i in range(len(values)):
values[i] = normalizeList(values[i])
return timesList, values
def trimFeaturesListSeizures(seizureStartTime): # Returns two 2d lists: one of values 3 min before the seizure, one of values 1 min during the seizure
times, values = getFeatureValues()
# Seizure start and end times are given in minutes; times is also in minutes
seizureStartTimeIndex = 0
for i in range(len(times)):
if times[i]<=seizureStartTime:
seizureStartTimeIndex=i
seizureStopTimeIndex = seizureStartTimeIndex+4
threeMinBeforeSeizureIndex = seizureStartTimeIndex-12 # 3 min before seizure
# Values 3 min before seizure goes from threeMinBeforeSeizureIndex to seizureStartTimeIndex
# Values 1 min during seizure goes from seizureStartTimeIndex to seizureStopTimeIndex
values3minBefore = []
values1minDuring = []
for i in range(len(values)):
featuresListBef = []
featuresListDur = []
for x in range(threeMinBeforeSeizureIndex, seizureStartTimeIndex+1):
featuresListBef.append(values[i][x])
for y in range(seizureStartTimeIndex, seizureStopTimeIndex+1):
featuresListDur.append(values[i][y])
values3minBefore.append(featuresListBef)
values1minDuring.append(featuresListDur)
return values3minBefore, values1minDuring
def writeSeizExcelClassifierPoints():
seiz = getSeizStartStopTimes(subject)
nonSeiz = getNonSeizStartStopTimes(subject)
before = []
during = []
if subject == "02" or subject == "03" or subject == "06":
before, during = trimFeaturesListSeizures(seiz[0])
beforePeaks = []
duringPeaks = []
for i in range(len(before)):
peak = abs(before[i][0])
for j in range(len(before[i])):
if abs(before[i][j]) > peak:
peak = before[i][j]
beforePeaks.append(peak)
for i in range(len(during)):
peak = abs(during[i][0])
for j in range(len(during[i])):
if abs(during[i][j]) > peak:
peak = during[i][j]
duringPeaks.append(peak)
fileAlreadyExists = os.path.isfile("Classifier Peak Points - Normalized.csv")
if not(fileAlreadyExists):
header2 = ['', 'mean_nni B', 'sdnn B', 'mean_hr B', 'std_hr B', 'vlf B', "mean_nni D", "sdnn D", "mean_hr D", "std_hr D", "vlf", "Seiz"]
csvfile = open ("Classifier Peak Points - Normalized.csv", "w", newline = '')
write = csv.writer(csvfile, delimiter = ",")
write.writerow(header2)
else:
csvfile = open ("Classifier Peak Points - Normalized.csv", "a", newline = '')
write = csv.writer(csvfile, delimiter = ",")
temp = [subject + 'Seiz1']
for peak in beforePeaks:
temp.append(str(peak))
for peak in duringPeaks:
temp.append(str(peak))
temp.append("0")
write.writerow(temp)
before, during = trimFeaturesListSeizures(seiz[2])
else:
before, during = trimFeaturesListSeizures(seiz[0])
firstOrSecond = "1"
if subject == "02" or subject == "03" or subject == "06":
firstOrSecond = "2"
beforePeaks = []
duringPeaks = []
for i in range(len(before)):
peak = abs(before[i][0])
for j in range(len(before[i])):
if abs(before[i][j]) > peak:
peak = before[i][j]
beforePeaks.append(peak)
for i in range(len(during)):
peak = abs(during[i][0])
for j in range(len(during[i])):
if abs(during[i][j]) > peak:
peak = during[i][j]
duringPeaks.append(peak)
fileAlreadyExists = os.path.isfile("Classifier Peak Points - Normalized.csv")
if not(fileAlreadyExists):
header2 = ['', 'mean_nni B', 'sdnn B', 'mean_hr B', 'std_hr B', 'vlf B', "mean_nni D", "sdnn D", "mean_hr D", "std_hr D", "vlf D", "Seiz"]
csvfile = open ("Classifier Peak Points - Normalized.csv", "w", newline = '')
write = csv.writer(csvfile, delimiter = ",")
write.writerow(header2)
else:
csvfile = open ("Classifier Peak Points - Normalized.csv", "a", newline = '')
write = csv.writer(csvfile, delimiter = ",")
temp = [subject + 'Seiz' + firstOrSecond]
for peak in beforePeaks:
temp.append(str(peak))
for peak in duringPeaks:
temp.append(str(peak))
temp.append("0")
write.writerow(temp)
def writeNonSeizExcelClassifierPoints():
nonSeiz = getNonSeizStartStopTimes(subject)
x = 0
while x < 2:
beforeNon, duringNon= trimFeaturesListSeizures(nonSeiz[x])
nonSeizBeforePeaks = []
nonSeizDuringPeaks = []
for i in range(len(beforeNon)):
peak = abs(beforeNon[i][0])
for j in range(len(beforeNon[i])):
if abs(beforeNon[i][j]) > peak:
peak = beforeNon[i][j]
nonSeizBeforePeaks.append(peak)
for i in range(len(duringNon)):
peak = abs(duringNon[i][0])
for j in range(len(duringNon[i])):
if abs(duringNon[i][j]) > peak:
peak = duringNon[i][j]
nonSeizDuringPeaks.append(peak)
fileAlreadyExists = os.path.isfile("Classifier Peak Points - Normalized.csv")
if not(fileAlreadyExists):
print ("You need to call the writeSeizExcelClassifierPoints method first")
sys.exit()
else:
csvfile = open ("Classifier Peak Points - Normalized.csv", "a", newline = '')
write = csv.writer(csvfile, delimiter = ",")
temp = [subject + 'NS' + str(x + 1)]
for peak in nonSeizBeforePeaks:
temp.append(str(peak))
for peak in nonSeizDuringPeaks:
temp.append(str(peak))
temp.append("1")
write.writerow(temp)
x += 1
#This method creates graphs for the indicated features inputted at the beginning by the user - REQUIRES EXCEL FILES
def getFeatureGraphs():
if (normalized == "no"):
question = input("Would you like a custom y min and y max for your graph(s)? Input 0 for yes, 1 for no: ") #This block of code is for the scale
mins = []
maxes = []
if question == "1":
for x in featuresList: #use of 'global' featuresList variable
mins.append(-1.0)
maxes.append(-1.0)
else:
for feature in featuresList:
min = float(input(
"What would you like the min y-value to be for " + feature + "? Enter -1 if you would like the default y - value: "))
max = float(input(
"What would you like the max y-value to be for " + feature + "? Enter -1 if you would like the default y - value: "))
mins.append(min)
maxes.append(max)
print ("hello")
timesList, values = getFeatureValues() #Call the getFeatureValues method
print ("hello")
indexVal = 0
for i in range(len(featuresList)): # For each feature requested
plt.figure("Patient" + subject + " - " + (featuresList[indexVal]))
plt.plot(timesList, values[indexVal]) # Plot graph
if subject == "01": # Depending on which subject was requested, plot vertical lines where that subject's seizure starts and stops
for z in range(len(seiz1)):
plt.axvline(x=seiz1[z], color='r')
if subject == "02":
for z in range(len(seiz2)):
plt.axvline(x=seiz2[z], color='r')
if subject == "03":
for z in range(len(seiz3)):
plt.axvline(x=seiz3[z], color='r')
if subject == "04":
for z in range(len(seiz4)):
plt.axvline(x=seiz4[z], color='r')
if subject == "05":
for z in range(len(seiz5)):
plt.axvline(x=seiz5[z], color='r')
if subject == "06":
for z in range(len(seiz6)):
plt.axvline(x=seiz6[z], color='r')
if subject == "07":
for z in range(len(seiz7)):
plt.axvline(x=seiz7[z], color='r')
plt.xlabel("time (min)")
plt.ylabel(featuresList[indexVal])
plt.xlim(0, timesList[-1])
if normalized == "no":
ymin = mins[indexVal]
ymax = maxes[indexVal]
if ((not (ymin == -1.0)) or (not (ymax == -1.0))):
plt.ylim(ymin, ymax)
else:
plt.ylim(0, 1)
plt.title("sz" + str(subject) + " - " + (featuresList[indexVal]))
plt.show() # Show the graph
indexVal += 1
def createKubiosFile(): #NEW FUNCTION 2
MyFile = open("Patient" + subject + "PROCESSED.txt", "w") #This block of code writes the processed data into text files that can be read into Kubios
for i in range(len(noEB3_data)): #This method uses the 'global' variables noEB3_time & noEB3_data
MyFile.write(str(noEB3_data[i]) + "\t" + str(noEB3_time[i]) + "\n")
subject = input("Whose data do you want to look at? ")
normalized = input("Do you want your data to be normalized? Enter yes or no: ")
step = 0.25
window = 3.0
header = ["Start Time", "End Time", "mean_nni", "sdnn", "sdsd", "nni_50", "pnni_50", "nni_20", "pnni_20", "rmssd",
"median_nni", "range_nni", "cvsd", "cvnni", "mean_hr", "max_hr", "min_hr", "std_hr", "lf", "hf",
"lf_hf_ratio", "lfnu", "hfnu", "total_power", "vlf", "sd1", "sd2", "ratio_sd2_sd1", '']
#The purpose of this block of code is to gather the features the user wants to look into
all = header[2: 28]
cont = bool(True)
featuresList = []
while (cont):
features = input("Enter the features you would like - \"all\" to select all features - 0 to stop: ")
if features == "all":
for i in range(len(all)):
featuresList.append(all[i])
cont = bool(False)
elif (features in header):
featuresList.append(features)
elif features == "0":
cont = bool(False)
else:
print("Feature not found")
##These are the global variables that are used in multiple methods at the bottom of the program (represent processed rr data)
interpolated_rr_intervals = getConditionedData()
noEB1_time, noEB1_data = removeEB(interpolated_rr_intervals, "karlsson")
noEB2_time, noEB2_data = removeEB(noEB1_data, "kamath")
noEB3_time, noEB3_data = removeEB(noEB2_data, "malik") # The conditioned data will be in noEB3_data and the corresponding times will be in noEB3_time.
sample_rate = float(input("What do you want the sample rate to be? "))
noEB3_data = hp.remove_baseline_wander(noEB3_data, sample_rate, cutoff=0.05) #TESTING HEARTPY - MIDDLE VALUE IS THE SAMPLE_RATE
writeSeizExcelClassifierPoints()
writeNonSeizExcelClassifierPoints()
#getFeatureGraphs() #Display Graphs