Question

Python code

def plot_dataset(file_path):
    """
    Read in a text file where the path and filename is given by the input parameter file_path
    There are 4 columns in the text dataset that are separated by colons ":".  c1:c2:c3:c4

    Plot 3 datasets. (x axis vs y axis)
    c1 vs c2 (Legend label "n=1")
    c1 vs c3 (Legend label "n=1")
    c1 vs c4 (Legend label "n=1")

    Make sure you have proper x and y labels and a title. The x label should be "x", y should be "Fourier Sum"
    And the title be Fourier Series. Remember, you should have your first.last.yy in parentheses in the title.

    For full credit you must also include a legend with the dataset labels as shown above.

    Upload the resulting plot (.png) to scholar for credit. No unit tests here.
    :param file_path:
    :return:
    """

I am kinda confused on this one. the only txt file i think i need to use is called fourier_series.txt but I may not need it at all.

Answer 1

NOTE: The meaning of "first.last.yy" was not given, but otherwise the solution should be ok. The file named "fourier_series.txt" musr be in the same directory as the program. You must change the data in the file with actual data.

Solution:-

1. The content of the file used, is given below:-

//------------------------------------------------------------------

1:2:3:4
5:6:7:8
9:10:11:12
13:14:15:16

//------------------------------------------------------------------

2. The requird source-code is given below:-

#!/usr/bin/python3
import matplotlib.pyplot as plt

def plot_dataset(file_path):
    # The Lists of Data
    c1=[]
    c2=[]
    c3=[]
    c4=[]
    
    # Opening the File
    file = open(file_path,'r')
    while True: 
        # Get Next Line from File 
        line = file.readline() 
        # If line is Empty ,
        # end of File is Reached
        if not line: 
            break 
        # Extracting the Data from File
        token=line.split(":")
        c1.append(token[0])
        c2.append(token[1])
        c3.append(token[2])
        c4.append(token[3])
    # Closing the File   
    file.close()
    
    # Setting the Title and axes
    plt.title('Fourier Series')
    plt.xlabel('x')
    plt.ylabel('Fourier Sum')
    # Plotting the first graph
    plt.scatter(c1,c2)
    plt.show()
    
    # Setting the Title and axes
    plt.title('Fourier Series')
    plt.xlabel('x')
    plt.ylabel('Fourier Sum')
    # Plotting the second graph
    plt.scatter(c1,c3)
    plt.show()
    
    # Setting the Title and axes
    plt.title('Fourier Series')
    plt.xlabel('x')
    plt.ylabel('Fourier Sum')
    # Plotting the third graph
    plt.scatter(c1,c4)
    plt.show()


# The Main Function
if __name__ == "__main__":
    plot_dataset('fourier_series.txt')

3. The first plot is given below:-

4. The second plot is given below:-

5. The third plot is given below:-