--- title: "numeric-units" slug: "numeric-units-parser" updated: 2022-07-27T17:29:03Z published: 2022-07-27T17:29:03Z canonical: "code.tag.bio/numeric-units-parser" --- > ## Documentation Index > Fetch the complete documentation index at: https://code.tag.bio/llms.txt > Use this file to discover all available pages before exploring further. # numeric-units The *numeric-units* **parser** will load data from a column in a source data table and map values to other values before producing a numeric **variable** within a **collection**. It inherits attributes and behaviors from its parent: **parser** - *numeric*. The *numeric-units* **parser** will parse a column value containing a number and a units string, and will extract the number part to become a **variable** within a **collection**. ## Attribute - units ``` { "parser_type": "numeric-units", "column": "cccc", // The units attribute is a string to remove to ensure // proper parsing as a number // "units": "$", "collection": "collection_name", "variable": "variable_name" } ```