added axis equal demo

jdh2358 · jdh2358 · commit ab29b9a0edbe · 2005-08-12T19:04:40.000Z
svn path=/trunk/matplotlib/; revision=1630
diff --git a/examples/axis_equal_demo.py b/examples/axis_equal_demo.py
@@ -0,0 +1,36 @@
+'''This example is only interesting when ran in interactive mode'''
+
+from pylab import *
+
+# Plot circle or radius 3
+
+an = linspace(0,2*pi,100)
+
+subplot(221)
+plot( 3*cos(an), 3*sin(an) )
+title('not equal, looks like ellipse',fontsize=10)
+
+subplot(222)
+plot( 3*cos(an), 3*sin(an) )
+axis('equal')
+title('equal, looks like circle',fontsize=10)
+
+subplot(223)
+plot( 3*cos(an), 3*sin(an) )
+axis('equal')
+axis([-3,3,-3,3])
+title('looks like circle, even after changing limits',fontsize=10)
+
+subplot(224)
+plot( 3*cos(an), 3*sin(an) )
+axis('equal')
+axis([-3,3,-3,3])
+plot([0,4],[0,4])
+title('still equal after adding line',fontsize=10)
+
+show()
+
+
+
+
+
