Added code to expose the persistence_diagram class, the bottleneck_distance function and the point class to python. Most of the commonly used methods for each class have been exported. The constructor for point now requires that a data argument be provided along with x and y coord. This needs to be made optional. The constructor for persistence_diagram could possibly be rewritten as well.

From: Dmitriy Morozov <morozov@cs.duke.edu>
Date: Wed, 09 Jan 2008 13:57:57 -0500
State: new
Subject: Change cout to rlog
Message-Id: <e8659770a6824e01-0-artemis@metatron>

In examples/grid/grid2Dvineyard.hpp (and in examples in general),
change the use of std::cout for logging information to rlog.
Naturally, create appropriate channels even if they are of only local
use.