> ## 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.

# Annual evolution by ImpactU classification

> Products per year by ImpactU classification.

Products per year by ImpactU classification. Chart type: **Bar**.

## Parameters

**affiliation\_type** `string` *required*

Affiliation type. This indicator returns data for: `institution`, `faculty`, `department`, `group`.

**affiliation\_id** `string` *required*

Affiliation identifier.

**plot** `string` *required*

Must be `annual_evolution_by_impactu_classification`.

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

## Availability by affiliation type

| `affiliation_type` | Data |
| - | - |
| `institution` | ✅ |
| `faculty` | ✅ |
| `department` | ✅ |
| `group` | ✅ |

## Response

```json Institution theme={null}
{
  "plot": [
    {
      "type": "Artículo de revista",
      "x": 25,
      "y": 1
    },
    {
      "type": "Tesis de pregrado",
      "x": 25,
      "y": 1
    },
    {
      "type": "Artículo de revista",
      "x": 1068,
      "y": 1
    },
    {
      "type": "Otro",
      "x": 1881,
      "y": 2
    }
  ]
}
```

```json Faculty theme={null}
{
  "plot": [
    {
      "type": "Tesis de posgrado",
      "x": 1970,
      "y": 1
    },
    {
      "type": "Artículo de revista",
      "x": 1979,
      "y": 1
    },
    {
      "type": "Tesis de posgrado",
      "x": 1980,
      "y": 1
    },
    {
      "type": "Libro",
      "x": 1985,
      "y": 1
    }
  ]
}
```

```json Department theme={null}
{
  "plot": [
    {
      "type": "Artículo de revista",
      "x": 1997,
      "y": 1
    },
    {
      "type": "Artículo de revista",
      "x": 1998,
      "y": 1
    },
    {
      "type": "Documento de trabajo",
      "x": 1999,
      "y": 2
    },
    {
      "type": "Publicaciones editoriales no especializadas",
      "x": 1999,
      "y": 1
    }
  ]
}
```

```json Group theme={null}
{
  "plot": [
    {
      "type": "Tesis de pregrado",
      "x": 1996,
      "y": 1
    },
    {
      "type": "Tesis de pregrado",
      "x": 1997,
      "y": 8
    },
    {
      "type": "Artículo de revista",
      "x": 1997,
      "y": 6
    },
    {
      "type": "Tesis de pregrado",
      "x": 1998,
      "y": 12
    }
  ]
}
```


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