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Version: 1.2

Chart

A context type representing details of a Chart, which may be used to request plotting of a particular chart or to otherwise share details of its composition, such as:

  • A list of instruments for comparison
  • The time period to plot the chart over
  • The style of chart (line, bar, mountain, candle etc.)
  • Other settings such as indicators to calculate, or data representing drawings and annotations.

In addition to handling requests to plot charts, a charting application may use this type to output a representation of what it is currently displaying so that it can be recorded by another application.

Schema​

https://github.com/finos/FDC3/tree/main/schemas/context/chart.schema.json

Type​

fdc3.chart

Properties​

instruments​

An array of instrument contexts whose data should be plotted.

Type: array

Example Value: 

[
  {
    "type": "fdc3.instrument",
    "id": {
      "ticker": "AAPL"
    }
  },
  {
    "type": "fdc3.instrument",
    "id": {
      "ticker": "GOOG"
    }
  }
]

range​

The time range that should be plotted

Reference: timerange

Example Value: 

{
  "type": "fdc3.timeRange",
  "startTime": "2020-09-01T08:00:00.000Z",
  "endTime": "2020-10-31T08:00:00.000Z"
}

style​

The type of chart that should be plotted

Type: string

Possible values: line, bar, stacked-bar, mountain, candle, pie, scatter, histogram, heatmap, custom

Example Value: line

otherConfig​

It is common for charts to support other configuration, such as indicators, annotations etc., which do not have standardized formats, but may be included in the otherConfig array as context objects.

Type: array

Example Value: 

[
  {
    "type": "somevendor.someproduct.indicator",
    "name": "stddev",
    "parameters": {
      "period": 10,
      "matype": "exponential"
    }
  },
  {
    "type": "someothervendor.someotherproduct.formula",
    "formula": "standard-deviation",
    "fields": {
      "lookback": 10,
      "type": "ema"
    }
  }
]

Example​

{
  "type": "fdc3.chart",
  "instruments": [
    {
      "type": "fdc3.instrument",
      "id": {
        "ticker": "AAPL"
      }
    },
    {
      "type": "fdc3.instrument",
      "id": {
        "ticker": "GOOG"
      }
    }
  ],
  "range": {
    "type": "fdc3.timeRange",
    "startTime": "2020-09-01T08:00:00.000Z",
    "endTime": "2020-10-31T08:00:00.000Z"
  },
  "style": "line",
  "otherConfig": [
    {
      "type": "somevendor.someproduct.indicator",
      "name": "stddev",
      "parameters": {
        "period": 10,
        "matype": "exponential"
      }
    },
    {
      "type": "someothervendor.someotherproduct.formula",
      "formula": "standard-deviation",
      "fields": {
        "lookback": 10,
        "type": "ema"
      }
    }
  ]
}