Improve error messages in linexprs.py

[linpy.git] / examples / squares.py

diff --git a/examples/squares.py b/examples/squares.py
index 4389d87..e00821e 100755 (executable)
--- a/examples/squares.py
+++ b/examples/squares.py
@@ -9,8 +9,11 @@ sq2 = Le(2, x) & Le(x, 4) & Le(2, y) & Le(y, 4)
 sq3 = Le(0, x) & Le(x, 3) & Le(0, y) & Le(y, 3)
 sq4 = Le(1, x) & Le(x, 2) & Le(1, y) & Le(y, 2)
 sq5 = Le(1, x) & Le(x, 2) & Le(1, y)
-sq6 = Le(1, x) & Le(x, 2) & Le(1, y) & Eq(y, 3)
+sq6 = Le(1, x) & Le(x, 2) & Le(1, y) & Le(y, 3)
 sq7 = Le(0, x) & Le(x, 2) & Le(0, y) & Eq(z, 2) & Le(a, 3)
+p = Le(2*x+1, y) & Le(-2*x-1, y) & Le(y, 1)
+
+
 universe = Polyhedron([])
 q = sq1 - sq2
 e = Empty
@@ -69,3 +72,7 @@ print()
 print('sq1 has {} parameters'.format(sq1.num_parameters()))
 print()
 print('does sq1 constraints involve x?', sq1.involves_dims([x]))
+print()
+print('the verticies for s are:', p.vertices())
+print()
+print(p.plot())