# Spread

Spread a key-value pair across multiple columns. Missing values will be replaced with NA.

## How to Access This Feature

### From + (plus) Button

![](/files/-M4oN9AqTA5_brwGuyhT)

* Click "+" button and select "Spread (Pivot)".

### From Column Menu

![](/files/-M4oN9Asi29QUEG9EYvN)

* You can also select two columns for key/value first, and then select "Spread (Pivot)" from the column menu of one of the selected columns.

## Spread a Key/Value Column Pair across Multiple Columns

![](/files/-M4oN9AuSOVuXgIhrUHX)

1. Select Columns to Spread

* Select Key/Value Columns from "Key Column"/"Value Column" dropdown.

1. Specify parameters in the "Parameters" section.

* Fill NA with - Value to fill missing values.
* Guess column data type - Select TRUE to automatically guess the most possible data type for the key column.
* Drop empty columns - The default is TRUE. Set FALSE to keep the levels that don’t appear in the data, filling in missing combinations with the text set with 'Fill NA with' field.
* Column Names Separator - The default is NULL. If NULL, the column names are values of the key column. Set separator text to make the column names "{key\_column\_name}{separator}{key\_value}".

1. Click "Run".


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.exploratory.io/data-wrangling/spread.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
