---
title: "analysis_variables"
slug: "analysis-variables-syntax"
updated: 2022-07-27T22:20:05Z
published: 2022-07-27T22:20:05Z
---

> ## 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.

# analysis_variables

## analysis_variables

**usage: *common* - datatype: *array***

The `analysis_variables` attribute defines the array of variable objects that will be analyzed in the context of `method` and other Tag.script attributes. The variable objects can represent both collections and variables, categorical or numeric. When a collection is included in the `analysis_variables` array, all variables from the collection will be analyzed. The output of a Tag.script contains an array of results, with one result for each `analysis_variable` specified.

```
"analysis_variables": [
  { 
    //A numeric variable object
    "variable_type": "numeric", //Indicates that this is a numeric collection
    "collection": "ccc1" //"ccc1" is a valid numeric collection name in Tag.cortex
  },
  { 
    //A numeric variable object
    "variable_type": "numeric",
    "collection": "ccc2", //"ccc2" is a valid numeric collection name in Tag.cortex
    "variable": vvv1" //"vvv1" is a valid variable name in collection "ccc2"
  },
  { 
    //A categorical variable object
    "variable_type": "categorical", //Indicates that this is a categorical collection
    "collection": "ccc3" //"ccc3" is a valid categorical collection name in Tag.cortex
  },
  { 
    //A categorical variable object
    "variable_type": "categorical",
    "collection": "ccc4" //"ccc4" is a valid categorical collection name in Tag.cortex
    "variable": "vvv2" //"vvv2" is a valid variable name in collection "ccc4"
  },
  { 
    //A complex variable object - see the Variable Object Reference
    "variable_type": "tttt", //Where "tttt" is one of many possible variable_types
    ...
  },
  ...
]
```