---
title: "summary(ofColumns:)"
framework: tabulardata
role: symbol
role_heading: Instance Method
path: "tabulardata/dataframe/slice/summary(ofcolumns:)"
---

# summary(ofColumns:)

Generates a data frame that summarizes the columns you select by index.

## Declaration

```swift
func summary(ofColumns columnIndices: Int...) -> DataFrame
```

## Parameters

- `columnIndices`: A comma-separated, or variadic, list of column indices in the data frame slice.

## See Also

### Summarizing a Slice

- [summary()](tabulardata/dataframe/slice/summary().md)
- [summary(of:)](tabulardata/dataframe/slice/summary(of:).md)
- [SummaryColumnIDs](tabulardata/summarycolumnids.md)