Remove old simple quiver demo

Author: dstansby

examples/pylab_examples/quiver_demo.py

@@ -1,12 +1,10 @@
 '''
-Demonstration of quiver and quiverkey functions. This is using the
-new version coming from the code in quiver.py.
+Demonstration of advanced quiver and quiverkey functions.
 
 Known problem: the plot autoscaling does not take into account
 the arrows, so those on the boundaries are often out of the picture.
 This is *not* an easy problem to solve in a perfectly general way.
 The workaround is to manually expand the axes.
-
 '''
 import matplotlib.pyplot as plt
 import numpy as np
@@ -16,18 +14,6 @@
 U = np.cos(X)
 V = np.sin(Y)
 
-# 1
-plt.figure()
-Q = plt.quiver(U, V)
-qk = plt.quiverkey(Q, 0.5, 0.98, 2, r'$2 \frac{m}{s}$', labelpos='W',
-                   fontproperties={'weight': 'bold'})
-l, r, b, t = plt.axis()
-dx, dy = r - l, t - b
-plt.axis([l - 0.05*dx, r + 0.05*dx, b - 0.05*dy, t + 0.05*dy])
-
-plt.title('Minimal arguments, no kwargs')
-
-# 2
 plt.figure()
 Q = plt.quiver(X, Y, U, V, units='width')
 qk = plt.quiverkey(Q, 0.9, 0.95, 2, r'$2 \frac{m}{s}$',
@@ -37,7 +23,6 @@
 plt.axis([-1, 7, -1, 7])
 plt.title('scales with plot width, not view')
 
-# 3
 plt.figure()
 Q = plt.quiver(X[::3, ::3], Y[::3, ::3], U[::3, ::3], V[::3, ::3],
                pivot='mid', color='r', units='inches')
@@ -47,7 +32,6 @@
 plt.axis([-1, 7, -1, 7])
 plt.title("pivot='mid'; every third arrow; units='inches'")
 
-# 4
 plt.figure()
 M = np.hypot(U, V)
 Q = plt.quiver(X, Y, U, V, M,
@@ -62,7 +46,6 @@
 plt.axis([-1, 7, -1, 7])
 plt.title("scales with x view; pivot='tip'")
 
-# 5
 plt.figure()
 Q = plt.quiver(X[::3, ::3], Y[::3, ::3], U[::3, ::3], V[::3, ::3],
                color='r', units='x',
@@ -72,7 +55,6 @@
 plt.axis([-1, 7, -1, 7])
 plt.title("triangular head; scale with x view; black edges")
 
-# 6
 plt.figure()
 M = np.zeros(U.shape, dtype='bool')
 XMaskStart = U.shape[0]//3
@@ -85,7 +67,7 @@
 U = ma.masked_array(U, mask=M)
 V = ma.masked_array(V, mask=M)
 Q = plt.quiver(U, V)
-qk = plt.quiverkey(Q, 0.5, 0.98, 2, r'$2 \frac{m}{s}$', labelpos='W',
+qk = plt.quiverkey(Q, 0.5, 0.96, 2, r'$2 \frac{m}{s}$', labelpos='W',
                    fontproperties={'weight': 'bold'})
 l, r, b, t = plt.axis()
 dx, dy = r - l, t - b