GET api/v1/devices/{deviceId}/charts/{chartId}/measurements/channel/{channel}?startDate={startDate}&endDate={endDate}&limit={limit}&aggregationThreshold={aggregationThreshold}&rangeType={rangeType}

Get the measurements for the device/channel in a chartable (aggregated) format. this method returns [limit] points from the [endDate] upto the [startDate]. If Ascending sort order is requested these points are listed in earliest measurement date first ranging to maximum measurement date, however if the [limit] number of points has been met then the earliest measurement date may not have reached the start date. The caller is required to make further calls with the [endDate] set to the minimum measurement date received in the previous page. If their are more than [limit] points the data set is limited that number of points working backwards from the end date.

Request Information

URI Parameters

Name	Description	Type	Additional information
deviceId	Id of the device	globally unique identifier	Required
chartId	Reserved for later use. Use Guid.Empty ("00000000-0000-0000-0000-000000000000") for now.	globally unique identifier	Required
channel	Measurement channel.	integer	Default value is 0
startDate	The earliest date to get measurements for.	string	Default value is
endDate	Leave null for measurements update current date/time	string	Default value is
limit	The number of measurement points. Note that because a measurement point consists of many fields the actual returned [e] collection is likely to be number of Fields x measurement points. If startDate and endDate are set do not include limit.	integer	None.
aggregationThreshold	How many "buckets" the aggregation should optimise into. Typically this would be at max the x-pixels on the chart. Defaults to 500	integer	Default value is 500
rangeType	The range type of the chart (i.e. individual points or hourly, daily etc)	ChartDataRangeType	Default value is Points

Body Parameters

None.

Response Information

Resource Description

ChartDataDto

Name	Description	Type	Additional information
Fields		Collection of ChartFieldDataDto	None.

Response Formats

application/json, text/json, application/senml+json

Sample:

{
  "Fields": [
    {
      "Name": "sample string 1",
      "FieldLabel": "sample string 2",
      "Unit": "sample string 3",
      "ChartColor": "sample string 4",
      "UseSecondAxis": true,
      "ChartAxisOption": 0,
      "Points": [
        [
          1.0,
          2.0
        ],
        [
          1.0,
          2.0
        ]
      ],
      "Statistics": {
        "TotalPoints": 1,
        "Average": 2.0,
        "StandardDeviation": 3.0,
        "Min": 4.0,
        "Max": 5.0,
        "DateRange": {
          "Start": "2025-10-23T15:54:04.0072116+00:00",
          "End": "2025-10-23T15:54:04.0072116+00:00"
        },
        "Sum": 6.0
      }
    },
    {
      "Name": "sample string 1",
      "FieldLabel": "sample string 2",
      "Unit": "sample string 3",
      "ChartColor": "sample string 4",
      "UseSecondAxis": true,
      "ChartAxisOption": 0,
      "Points": [
        [
          1.0,
          2.0
        ],
        [
          1.0,
          2.0
        ]
      ],
      "Statistics": {
        "TotalPoints": 1,
        "Average": 2.0,
        "StandardDeviation": 3.0,
        "Min": 4.0,
        "Max": 5.0,
        "DateRange": {
          "Start": "2025-10-23T15:54:04.0072116+00:00",
          "End": "2025-10-23T15:54:04.0072116+00:00"
        },
        "Sum": 6.0
      }
    }
  ]
}

application/xml, text/xml

Sample:

<ChartDataDto xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/AnalysisUK.Tinamous.www.ApiControllers.Models.DeviceChartsMeasurements">
  <Fields>
    <ChartFieldDataDto>
      <ChartAxisOption>Unknown</ChartAxisOption>
      <ChartColor>sample string 4</ChartColor>
      <FieldLabel>sample string 2</FieldLabel>
      <Name>sample string 1</Name>
      <Points xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
        <d4p1:ArrayOfdecimal>
          <d4p1:decimal>1</d4p1:decimal>
          <d4p1:decimal>2</d4p1:decimal>
        </d4p1:ArrayOfdecimal>
        <d4p1:ArrayOfdecimal>
          <d4p1:decimal>1</d4p1:decimal>
          <d4p1:decimal>2</d4p1:decimal>
        </d4p1:ArrayOfdecimal>
      </Points>
      <Statistics>
        <Average>2</Average>
        <DateRange>
          <End>2025-10-23T15:54:04.0072116+00:00</End>
          <Start>2025-10-23T15:54:04.0072116+00:00</Start>
        </DateRange>
        <Max>5</Max>
        <Min>4</Min>
        <StandardDeviation>3</StandardDeviation>
        <Sum>6</Sum>
        <TotalPoints>1</TotalPoints>
      </Statistics>
      <Unit>sample string 3</Unit>
      <UseSecondAxis>true</UseSecondAxis>
    </ChartFieldDataDto>
    <ChartFieldDataDto>
      <ChartAxisOption>Unknown</ChartAxisOption>
      <ChartColor>sample string 4</ChartColor>
      <FieldLabel>sample string 2</FieldLabel>
      <Name>sample string 1</Name>
      <Points xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
        <d4p1:ArrayOfdecimal>
          <d4p1:decimal>1</d4p1:decimal>
          <d4p1:decimal>2</d4p1:decimal>
        </d4p1:ArrayOfdecimal>
        <d4p1:ArrayOfdecimal>
          <d4p1:decimal>1</d4p1:decimal>
          <d4p1:decimal>2</d4p1:decimal>
        </d4p1:ArrayOfdecimal>
      </Points>
      <Statistics>
        <Average>2</Average>
        <DateRange>
          <End>2025-10-23T15:54:04.0072116+00:00</End>
          <Start>2025-10-23T15:54:04.0072116+00:00</Start>
        </DateRange>
        <Max>5</Max>
        <Min>4</Min>
        <StandardDeviation>3</StandardDeviation>
        <Sum>6</Sum>
        <TotalPoints>1</TotalPoints>
      </Statistics>
      <Unit>sample string 3</Unit>
      <UseSecondAxis>true</UseSecondAxis>
    </ChartFieldDataDto>
  </Fields>
</ChartDataDto>