diff options
Diffstat (limited to 'python/pyspark/mllib/linalg.py')
| -rw-r--r-- | python/pyspark/mllib/linalg.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/python/pyspark/mllib/linalg.py b/python/pyspark/mllib/linalg.py index 9a239abfbb..f485a69db1 100644 --- a/python/pyspark/mllib/linalg.py +++ b/python/pyspark/mllib/linalg.py @@ -23,6 +23,7 @@ object from MLlib or pass SciPy C{scipy.sparse} column vectors if SciPy is available in their environment. """ +import numpy from numpy import array, array_equal, ndarray, float64, int32 @@ -160,6 +161,15 @@ class SparseVector(object): j += 1 return result + def toArray(self): + """ + Returns a copy of this SparseVector as a 1-dimensional NumPy array. + """ + arr = numpy.zeros(self.size) + for i in xrange(self.indices.size): + arr[self.indices[i]] = self.values[i] + return arr + def __str__(self): inds = "[" + ",".join([str(i) for i in self.indices]) + "]" vals = "[" + ",".join([str(v) for v in self.values]) + "]" |