Added extensions to exported figures in tutorials

Author: max-models

tutorials/tutorial_03.py

@@ -5,4 +5,4 @@
 sp.add_line([0, 1, 2, 3], [0, 1, 4, 9], label="Line 1",layer=0)
 sp.add_line([0, 1, 2, 3], [0, 2, 3, 4], linestyle='dashed', color='red', label="Line 2",layer=1)
 #c.plot()
-c.savefig(layer_by_layer=True, filename='figures/tutorial_03_figure_01')
+c.savefig(layer_by_layer=True, filename='figures/tutorial_03_figure_01.pdf')

tutorials/tutorial_05.py

@@ -17,4 +17,4 @@
 y = np.sin(x)
 sp.add_line(x, y, label=r"$\sin(x)$")
 # c.plot()
-c.savefig(filename='figures/tutorial_05_figure_01')
+c.savefig(filename='figures/tutorial_05_figure_01.pdf')

tutorials/tutorial_06.py

@@ -7,4 +7,4 @@
 data = np.random.random((10,10))
 sp.add_imshow(data, extent=[1,10,1,20],layer=1)
 #c.plot()
-c.savefig(layer_by_layer=True, filename='figures/tutorial_06_figure_01')
+c.savefig(layer_by_layer=True, filename='figures/tutorial_06_figure_01.pdf')