> For the complete documentation index, see [llms.txt](https://danfo.jsdata.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://danfo.jsdata.org/api-reference/groupby.md).

# Groupby

### Indexing, iteration

|                                                                                                                            |                                                    |
| -------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------- |
| [`GroupBy.get_group`](https://github.com/javascriptdata/danfojs-doc/blob/master/api-reference/groupby/groupby.getGroup.md) | Construct DataFrame from group with provided name. |

### Function application

|                                                        |                                                                 |
| ------------------------------------------------------ | --------------------------------------------------------------- |
| [`GroupBy.agg`](/api-reference/groupby/groupby.agg.md) | Aggregate using one or more operations over the specified axis. |

### Computations / descriptive stats

|                                                                                                                                                  |                                                                 |
| ------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------- |
| [`GroupBy.count`](/api-reference/groupby/groupby.count.md)                                                                                       | Compute count of group, excluding missing values.               |
| [`GroupBy.cumMax`](https://github.com/javascriptdata/danfojs-doc/blob/master/api-reference/groupby/groupby.cummax.md)                            | Cumulative max for each group.                                  |
| [`GroupBy.cumMin`](https://github.com/javascriptdata/danfojs-doc/blob/master/api-reference/groupby/groupby.cummin.md)                            | Cumulative min for each group.                                  |
| [`GroupBy.cumProd`](https://github.com/javascriptdata/danfojs-doc/blob/master/api-reference/groupby/groupby.cumprod.md)                          | Cumulative product for each group.                              |
| [`GroupBy.cumSum`](https://github.com/javascriptdata/danfojs-doc/blob/master/api-reference/groupby/groupby.cumsum.md)                            | Cumulative sum for each group.                                  |
| [`GroupBy.max`](https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.core.groupby.GroupBy.max.html#pandas.core.groupby.GroupBy.max) | Compute max of group values.                                    |
| [`GroupBy.mean`](/api-reference/groupby/groupby.mean.md)                                                                                         | Compute mean of groups, excluding missing values.               |
| [`GroupBy.min`](/api-reference/groupby/groupby.min.md)                                                                                           | Compute min of group values.                                    |
| [`GroupBy.std`](/api-reference/groupby/groupby.std.md)                                                                                           | Compute standard deviation of groups, excluding missing values. |
| [`GroupBy.sum`](https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.core.groupby.GroupBy.sum.html#pandas.core.groupby.GroupBy.sum) | Compute sum of group values.                                    |
| [`GroupBy.var`](/api-reference/groupby/groupby.var.md)                                                                                           | Compute variance of groups, excluding missing values.           |