Added chekc installation script

Author: rougier

figures/grid.png

@@ -0,0 +1,59 @@
+# -----------------------------------------------------------------------------
+# Copyright (c) 2016, Nicolas P. Rougier. All Rights Reserved.
+# Distributed under the (new) BSD License.
+# -----------------------------------------------------------------------------
+from distutils.version import LooseVersion
+
+# Check for python
+import sys
+if sys.version_info <= (3,0):
+    print("This tutorial requires Python 3\n")
+    sys.exit()
+
+# Check for numpy
+try:
+    import numpy as np
+except:
+    print("This tutorial requires numpy\n")
+    sys.exit()
+print("Check for numpy: ", end="")
+if LooseVersion(np.__version__) < LooseVersion("1.0"):
+    print("numpy too old (< 1.0)\n")
+    sys.exit()
+else:
+    print("ok")
+    
+
+# Check for matplotlib
+try:
+    import matplotlib as mpl 
+except:
+    print("This tutorial requires matplotib\n")
+    sys.exit()
+print("Check for matplotlib: ", end="")
+if LooseVersion(mpl.__version__) < LooseVersion("1.5"):
+    print("matplotlib too old (< 1.5)\n")
+    sys.exit()
+else:
+    print("ok")
+
+# Check for basemap
+try:
+    import mpl_toolkits.basemap as basemap 
+except:
+    print("This tutorial requires basemap\n")
+    sys.exit()
+print("Check for basemap: ", end="")
+if LooseVersion(basemap.__version__) < LooseVersion("1.0"):
+    print("basemape is too old (< 1.0) \n")
+    sys.exit()
+else:
+    print("ok")
+        
+# Check for urllib
+try:
+    import urllib
+except:
+    print("This tutorial requires urllib")
+else:
+    print("Check for urllib: ok")

figures/imshow.png

@@ -1,5 +1,5 @@
 # -----------------------------------------------------------------------------
-# Copyright (c) 2015, Nicolas P. Rougier. All Rights Reserved.
+# Copyright (c) 2014, Nicolas P. Rougier. All Rights Reserved.
 # Distributed under the (new) BSD License.
 # -----------------------------------------------------------------------------
 # Based on : https://peak5390.wordpress.com
@@ -23,7 +23,7 @@
 # url = urllib.urlopen(feed + "significant_month.csv")
 
 # Earthquakes of magnitude > 4.5 in the past 30 days
-url = urllib.urlopen(feed + "4.5_month.csv")
+url = urllib.request.urlopen(feed + "4.5_month.csv")
 
 # Earthquakes of magnitude > 2.5 in the past 30 days
 # url = urllib.urlopen(feed + "2.5_month.csv")
@@ -32,26 +32,27 @@
 # url = urllib.urlopen(feed + "1.0_month.csv")
 
 # Set earthquake data
-data = url.read().split('\n')[+1:-1]
+data = url.read()
+data = data.split(b'\n')[+1:-1]
 E = np.zeros(len(data), dtype=[('position',  float, 2),
                                ('magnitude', float, 1)])
 for i in range(len(data)):
-    row = data[i].split(',')
+    row = data[i].split(b',')
     E['position'][i] = float(row[2]),float(row[1])
     E['magnitude'][i] = float(row[4])
 
 
-fig = plt.figure(figsize=(10,8))
+fig = plt.figure(figsize=(14,10))
 ax = plt.subplot(1,1,1)
 P = np.zeros(50, dtype=[('position', float, 2),
                         ('size',     float, 1),
                         ('growth',   float, 1),
                         ('color',    float, 4)])
 
 # Basemap projection
-earth = Basemap(projection='mill')
-earth.drawcoastlines(color='0.50', linewidth=0.25)
-earth.fillcontinents(color='0.95')
+map = Basemap(projection='mill')
+map.drawcoastlines(color='0.50', linewidth=0.25)
+map.fillcontinents(color='0.95')
 scat = ax.scatter(P['position'][:,0], P['position'][:,1], P['size'], lw=0.5,
                   edgecolors = P['color'], facecolors='None', zorder=10)
 
@@ -64,7 +65,7 @@ def update(frame):
     P['size'] += P['growth']
 
     magnitude = E['magnitude'][current]
-    P['position'][i] = earth(*E['position'][current])
+    P['position'][i] = map(*E['position'][current])
     P['size'][i] = 5
     P['growth'][i]= np.exp(magnitude) * 0.1
 
@@ -76,9 +77,7 @@ def update(frame):
     scat.set_facecolors(P['color']*(1,1,1,0.25))
     scat.set_sizes(P['size'])
     scat.set_offsets(P['position'])
-    return scat,
 
-
-plt.title("Earthquakes > 4.5 in the last 30 days (18/08/2015)")
+plt.title("Earthquakes > 4.5 in the last 30 days")
 animation = FuncAnimation(fig, update, interval=10)
 plt.show()

scripts/check-installation.py

@@ -25,5 +25,5 @@ def f(x,y): return (1-x/2+x**5+y**3)*np.exp(-x**2-y**2)
           size='medium',
           transform = gca().transAxes)
 
-plt.savefig('../figures/imshow.png', dpi=64)
-
+#plt.savefig('../figures/imshow.png', dpi=64)
+plt.show()

scripts/earthquakes.py

@@ -15,7 +15,7 @@ def f(x,y):
 Z = f(X,Y)
 
 plt.axes([0.025,0.025,0.95,0.95])
-plt.imshow(Z,interpolation='nearest', cmap='bone', origin='lower')
+plt.imshow(Z,interpolation='bicubic', cmap='bone', origin='lower')
 plt.colorbar(shrink=.92)
 
 plt.xticks([]), plt.yticks([])

scripts/imshow.py

@@ -2,11 +2,11 @@
 
 subplot(1,2,1)
 xticks([]), yticks([])
-text(0.5,0.5, 'subplot(1,2,1)',ha='center',va='center',size=24,alpha=.5)
+text(0.5,0.5, 'subplot(2,2,1)',ha='center',va='center',size=24,alpha=.5)
 
 subplot(1,2,2)
 xticks([]), yticks([])
-text(0.5,0.5, 'subplot(1,2,2)',ha='center',va='center',size=24,alpha=.5)
+text(0.5,0.5, 'subplot(2,2,2)',ha='center',va='center',size=24,alpha=.5)
 
 # plt.savefig('../figures/subplot-vertical.png', dpi=64)
 show()