diff options
Diffstat (limited to 'python')
| -rw-r--r-- | python/pyspark/sql/dataframe.py | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/python/pyspark/sql/dataframe.py b/python/pyspark/sql/dataframe.py index bf7c47b726..d51309f7ef 100644 --- a/python/pyspark/sql/dataframe.py +++ b/python/pyspark/sql/dataframe.py @@ -520,6 +520,25 @@ class DataFrame(object): orderBy = sort + def describe(self, *cols): + """Computes statistics for numeric columns. + + This include count, mean, stddev, min, and max. If no columns are + given, this function computes statistics for all numerical columns. + + >>> df.describe().show() + summary age + count 2 + mean 3.5 + stddev 1.5 + min 2 + max 5 + """ + cols = ListConverter().convert(cols, + self.sql_ctx._sc._gateway._gateway_client) + jdf = self._jdf.describe(self.sql_ctx._sc._jvm.PythonUtils.toSeq(cols)) + return DataFrame(jdf, self.sql_ctx) + def head(self, n=None): """ Return the first `n` rows or the first row if n is None. |