added 1d scatter plot and test

tests/tools/test_plotting.py

@@ -9,7 +9,12 @@ import torch as t
 import scipy.misc
 import matplotlib.pyplot as plt
 
-
+def test_plot_1d(show_plot):
+    # Plot simple linear scatter plot
+    arr = np.arange(10)
+    plotting.plot_1d(arr, title = 'Linear Plot')
+    if show_plot:
+        plt.show()
 
 def test_plot_amplitude(show_plot):
     # Test with tensor