---
title: "Remap (LMATH)"
slug: "remap-lmath"
updated: 2025-03-05T08:50:52Z
published: 2025-03-05T08:50:52Z
canonical: "docs.datajet.app/remap-lmath"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.datajet.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Remap (LMATH)

## LMath: Remap (A, B)

Available from **v7.3.2.01**

Map a continuous numeric field to a discrete numeric field

## Purpose

Use this function to:

- Turn a continuous field into a numeric field so that it can be used in functions requiring discrete fields.
- Scale a field

## Return Value

| Property | Value |
| --- | --- |
| **FieldType** | LongInteger |
| **FieldSize** | High |
| **DataType** | Discrete |
| **DataSize** | Short / Integer / LongInteger |

## Parameters

| Parameter | JSON | Description |
| --- | --- | --- |
| **Table** | “targetTable”: “MyTableName” | The target table on which the new field will be created |
| **Filter** | “dataset”: {DataSet_JSON} | Optional. If a filter is applied, records not in the filter recordset will be returned as null. |
| **LMath** **Function** | “p1”: “” | "Remap" |
| **A** | “p2”: “NumericFieldName” | Required. Field to remap *Supports:* - **DataType:** Discrete / Continuous - **Field Type:** Integer, Double |
| **B** | “p3”: “SizeOfRange” “p3”: “#N*” | Required. Size of the range to map the field to. *Supports:* - **Fixed Value:** #N* e.g. #201596, #-87 - **Fixed Value:** #N*.N* e.g. #201596.05, #-87.98 |
| **Treat Null as Zero** | "nullIsZero": true "nullIsZero": false | True/False. Default = False If true, then any null values in the input fields will be treated as if they have a value of 0. |

## JSON Sample

The following remaps the field "y_latitude" into field "REMAP y_latitude", where "REMAP y_latitude" has a potential range of 100,000 discrete values

```json
{
  "method": "BuildBakedField",
  "project": "REGRESS_PackageInject",
  "targetTable": "DATA_SRC",
  "overwrite": true,
  "name": "REMAP y_latitude",
  "function": "lmath",
  "p1": "REMAP(A,B)",
  "p2": "y_latitude",
  "p3": "#100000"
}
```

![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/image-1741029224635.png)

## Usage Notes

See Also:

- [LMath Overview](/v1/docs/lmath-overview)
- [Engineering | Expression Field](/v1/docs/expression-field)

## Example

| Example | Details |
| --- | --- |
| **Description** | Reduce discrete values of continuous double latitude field by scaling to fit a specified range |
| **Input** | - Table: = [DATA_SRC] - Filter: = [No Filter] - Function: = LMath - **Math Function** **= Remap(A,B)** - A:= [DATA_SRC].[y_latitude] - B:= #100000 - Name: = REMAP y_latitude |
| **Sample** | ![](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/image-1741164623338.png) |