added bar graph

quiz/views.py

@@ -14,6 +14,7 @@ from django.shortcuts import redirect
 from .models import result as results
 from .models import cribs as crib
 from .models import Permission
+import collections
 from django.db import connection, transaction
 import numpy as np
 import math
@@ -159,14 +160,27 @@ def instructor(request):
         allStudents.append(student['studentId'])
     std=np.std(allMarks)
     mean=np.mean(allMarks)
-    ax.hist(allMarks,allStudents)
-    html_graph = mpld3.fig_to_html(fig)
+    data =allMarks
+    c = collections.Counter(data)
+    c = sorted(c.items())
+    months_num = [i[0] for i in c]
+    freq = [i[1] for i in c]
+    plt.barh(months_num, freq)
+    plt.title("Score V/S N.O of Students")
+    plt.xlabel("N.O of Students")
+    plt.ylabel("Scores")
+    ax.set_xticks(range(1,len(allMarks)+1))
+    #ax.set_xticklabels(months)
+    html_graph = mpld3.fig_to_html(fig) 
     fig1, ax1 = plt.subplots()
     mu = mean
     variance = np.std(allMarks)
     sigma = math.sqrt(variance)
     x = np.linspace(mu - 3*sigma, mu + 3*sigma, 100)
     ax1.plot(x, stats.norm.pdf(x, mu, sigma))
+    ax1.set_title('Normal Distribution for Scores to Students')
+    ax1.set_xlabel('Score')
+    ax1.set_ylabel('PDF')
     html_graph1 = mpld3.fig_to_html(fig1)
     return render(request, 'instructor.html',{"graph": html_graph, "graph1": html_graph, "graph2": html_graph1,'quiz_id':q_id,'cribs':cribbs})