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# trend.get

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### Description

`integer/array trend.get(object parameters)`

The method allows to retrieve trend data according to the given parameters.

::: noteclassic
This method is available to users of any type. 
Permissions to call the method can be revoked in user role settings. 
See [User roles](/manual/web_interface/frontend_sections/users/user_roles) for more information.
:::

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### Parameters

`(object)` Parameters defining the desired output.

The method supports the following parameters.

|Parameter|[Type](/manual/api/reference_commentary#data_types)|Description|
|--|--|------|
|itemids|ID/array|Return only trends with the given item IDs.|
|time\_from|timestamp|Return only values that have been collected after or at the given time.|
|time\_till|timestamp|Return only values that have been collected before or at the given time.|
|countOutput|boolean|Count the number of retrieved objects.|
|limit|integer|Limit the amount of retrieved objects.|
|output|query|Set [Trend object](/manual/api/reference/trend/object) properties to be returned.|

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### Return values

`(integer/array)` Returns either:

-   an array of objects;
-   the count of retrieved objects, if the `countOutput` parameter has
    been used.

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### Examples

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#### Retrieving item trend data

[Request](/manual/api#performing-requests):

```json
{
    "jsonrpc": "2.0",
    "method": "trend.get",
    "params": {
        "output": [
            "itemid",
            "clock",
            "num",
            "value_min",
            "value_avg",
            "value_max"
        ],
        "itemids": [
            "23715"
        ],
        "limit": "1"
    },
    "id": 1
}
```

Response:

```json
{
    "jsonrpc": "2.0",
    "result": [
        {
            "itemid": "23715",
            "clock": "1446199200",
            "num": "60",
            "value_min": "0.165",
            "value_avg": "0.2168",
            "value_max": "0.35"
        }
    ],
    "id": 1
}
```

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### Source

CTrend::get() in *ui/include/classes/api/services/CTrend.php*.

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