> ## Documentation Index
> Fetch the complete documentation index at: https://help.impactu.colav.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Products by subject area

> Products by subject area.

Products by subject area. Chart type: **Pie**.

## Parameters

**person\_id** `string` *required*

Author identifier.

**plot** `string` *required*

Must be `products_by_subject`.

It also accepts the [product filters](https://help.impactu.colav.co/en/api-reference/person/get-research-products.md). `max`, `page` and `sort` do not apply.

## Response

The response structure is identical to that of the equivalent indicator for [affiliations](https://help.impactu.colav.co/en/api-reference/affiliation/plots/overview.md).

```json Institution theme={null}
{
  "plot": [
    {
      "name": "Business, Innovation, and Economy",
      "percentage": 1.95,
      "value": 1451
    },
    {
      "name": "History and Politics in Latin America",
      "percentage": 1.79,
      "value": 1331
    },
    {
      "name": "Conflict, Peace, and Violence in Colombia",
      "percentage": 1.54,
      "value": 1142
    },
    {
      "name": "Health and Lifestyle Studies",
      "percentage": 1.38,
      "value": 1026
    }
  ],
  "sum": 74346
}
```

```json Faculty theme={null}
{
  "plot": [
    {
      "name": "Literacy and Educational Practices",
      "percentage": 7.67,
      "value": 276
    },
    {
      "name": "Education and Teacher Training",
      "percentage": 7.67,
      "value": 276
    },
    {
      "name": "Educational Innovations and Technology",
      "percentage": 7.2,
      "value": 259
    },
    {
      "name": "Educational theories and practices",
      "percentage": 5.73,
      "value": 206
    }
  ],
  "sum": 3597
}
```

```json Department theme={null}
{
  "plot": [
    {
      "name": "Historical and Modern Theater Studies",
      "percentage": 17.52,
      "value": 41
    },
    {
      "name": "Architecture, Art, Education",
      "percentage": 6.41,
      "value": 15
    },
    {
      "name": "Literary and Cultural Studies",
      "percentage": 5.13,
      "value": 12
    },
    {
      "name": "Cinema History and Criticism",
      "percentage": 4.7,
      "value": 11
    }
  ],
  "sum": 234
}
```

```json Group theme={null}
{
  "plot": [
    {
      "name": "Mycobacterium research and diagnosis",
      "percentage": 9.7,
      "value": 35
    },
    {
      "name": "Vector-borne infectious diseases",
      "percentage": 7.76,
      "value": 28
    },
    {
      "name": "Veterinary Equine Medical Research",
      "percentage": 7.48,
      "value": 27
    },
    {
      "name": "Milk Quality and Mastitis in Dairy Cows",
      "percentage": 4.99,
      "value": 18
    }
  ],
  "sum": 361
}
```


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