New examples

libs/numpy/example/ndarray.cpp

@@ -0,0 +1,33 @@
+/**
+ *  @brief An example to show how to create ndarrays using arbitrary Python sequences
+ *         The Python sequence could be any object whose __array__ method returns an array, or any (nested) sequence.
+ *
+ *  @todo Find a way to create a list explicitly
+ *        
+ */
+
+#include <boost/numpy.hpp>
+#include <iostream>
+
+namespace p = boost::python;
+namespace np = boost::numpy;
+
+int main(int argc, char **argv)
+{
+  // Initialize the Python runtime.
+  Py_Initialize();
+  // Initialize NumPy
+  np::initialize();
+  // Create an ndarray from a simple tuple
+  p::object tu = p::make_tuple('a','b','c') ;
+  np::ndarray example_tuple = np::array (tu) ; 
+  // and from a list
+  p::list l ;
+  l.append('a') ;
+  np::ndarray example_list = np::array (l) ; 
+  // Optionally, you can also specify a dtype
+  np::dtype dt = np::dtype::get_builtin<int>();
+  np::ndarray example_list1 = np::array (l,dt);
+}
+
+