---
title: "A (LMATH)"
slug: "a-lmath"
updated: 2022-09-27T13:25:22Z
published: 2022-09-27T13:25:22Z
canonical: "docs.datajet.app/a-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.

# A (LMATH)

## LMath: A

## Creates an integer copy of Field A

## Purpose

Use this function to:

- Turn a decimal field into a integer
- Create a copy of an existing numeric field
- Create a filtered copy of an existing field
- Create a copy of an existing field where null values are mapped to zero

## Return Value

| Property | Value |
| --- | --- |
| **FieldType** | Integer |
| **FieldSize** | Med - Up to 65,630 unique values High - up to 1,000,000 unique values Continuous - greater than 1,000,000 unique values |
| **DataType** | Discrete / Continuous |
| **DataSize** | Short / Integer |

```shell
Example Return Value: X...-X

e.g.  21, 98754654, -5, -654
```

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

## 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. *Note: Records not in the filter will still be treated as null, even if [Treat Null as Zero] is true.* |
| **Math** **Function** | “p1”: “A” | A |
| **A** | “p2”: “NumericFieldName” “p2”: “#N*.N*” | Required. *Supports:* - **DataType:** Discrete / Continuous - **Field Type:** Integer, Double - **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

```json
{
  "method": "BuildBakedField",
  "project": "JoinDiscreteContinuous",
  "targetTable": "worldcities",
  "overwrite": true,
  "name": "lat_lines",
  "function": "lmath",
  "p1": "A",
  "p2": "lat"
}
```

## Usage Notes

Note: no rounding of data occurs when using A(LMath) to convert a decimal to an integer. The integer portion of the decimal number is kept, and the decimal portion is discarded.

See Also:

- LMath Overview
- A(DMath)
- CopyDiscrete

## Example

| Example | Details |
| --- | --- |
| **Description** | Obtain integer portion of longitude |
| **Input** | - Table: = [worldcities] - Filter:= None - Function: = LMath - **Math Function** **= A** - A:= [worldcities].[lon] - Treat Null as Zero: = false - Name: = lon_lines |
| **Sample** | ![A_Example](https://cdn.document360.io/73b6469b-c1e4-47e9-aa65-986c8ebd17ca/Images/Documentation/A_Example.PNG) |