Fix issue with old repo

D3/python/TrekantOsc.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Created on Sun Apr 28 16:08:42 2019
+
+@author: oyvind
+"""
+import matplotlib.pyplot as plt
+
+freq = 1000
+
+period = 10**3 / freq
+
+cycles = 2
+
+resolution = 1000
+
+upperVolt = 1
+
+lowerVolt = -1
+
+
+def GenTime():
+    time = []
+    for t in range(2 * resolution * cycles):
+        time.append(t * period / (2 * resolution))
+        
+    return time
+
+def GenSquare():
+    square = []
+    for s in range(cycles):
+        for h in range(resolution):
+            square.append(upperVolt)
+        for h in range(resolution):
+            square.append(lowerVolt)
+    return square
+
+def GenCenter(times):
+    center = []
+    for i in times:
+        center.append(0)
+    return center
+
+time = GenTime()
+square = GenSquare()
+center = GenCenter(time)
+
+plt.figure(figsize=(12,5))
+plt.plot(time, square)
+plt.hlines(0, time[0], time[-1], color='k',linestyles='dashed')
+plt.title("Test")
+plt.xlabel("Tid [ms]")
+plt.ylabel("Spenning [V]")
+plt.legend(["Pulstog, " + r'$v_1$', "Utgående spenning, " + r'$v_2$', "Terskelspenning, " + r'$V_T$'], loc="upper right")
+#plt.savefig(filename + ".png", dpi = 300)
+plt.show()