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dataframe/docs/StardustDocs/topics/implode.md

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+[//]: # (title: implode)
+
+<!---IMPORT org.jetbrains.kotlinx.dataframe.samples.api.Modify-->
+
+Returns [`DataFrame`](DataFrame.md) where values in given columns are merged into lists grouped by other columns.
+
+```text
+implode(dropNA = false) [ { columns } ]
+```
+
+See [column selectors](ColumnSelectors.md) for how to select the columns for this operation.
+
+**Parameters:**
+* `dropNA` — if `true`, removes `NA` values from merged lists.
+
+**Reverse operation:** [`explode`](explode.md)
+
+Imploded columns will change their types:
+* `T` to `List<T>`
+* [`DataRow`](DataRow.md) to [`DataFrame`](DataFrame.md)
+
+Imploded [`ColumnGroup`](DataColumn.md#columngroup) will convert into [`FrameColumn`](DataColumn.md#framecolumn)
+
+<!---FUN implode-->
+
+```kotlin
+df.implode { name and age and weight and isHappy }
+```
+
+<inline-frame src="resources/org.jetbrains.kotlinx.dataframe.samples.api.Modify.implode.html" width="100%"/>
+<!---END-->