financeYahoo

Documentation

Overview

Example (LoadURLCollectionDataFromFile)

This test includes calls to mapURLCollectionDataHeaderIndices, urlCollectionDataToStructure, and urlCollectionDataDateOrder via a call to urlCollectionDataToGroup

_, urlSymbolMap := dl.GenerateURLs(testSymbols, yahooURL)
urlData, _ := dl.LoadURLCollectionDataFromFile(testDataFilePath)
group, _ := urlCollectionDataToGroup(urlData, urlSymbolMap, "test")

fmt.Printf("%+v", group.String())

Output:

{
  "Name": "test",
  "Issues": [
    {
      "Symbol": "dia",
      "URL": "https://query1.finance.yahoo.com/v7/finance/download/dia?period1=1640995200\u0026period2=1641340800\u0026interval=1d\u0026events=history\u0026includeAdjustedClose=true",
      "Dataset": [
        {
          "Date": "2022-01-03T00:00:00Z",
          "Open": 364.34,
          "High": 365.85,
          "Low": 362.3,
          "Close": 365.68,
          "Volume": 5624100,
          "AdjOpen": 357.3278897232553,
          "AdjHigh": 358.8088281694378,
          "AdjLow": 355.3271516900022,
          "AdjClose": 358.6421,
          "AdjVolume": 0
        },
        {
          "Date": "2022-01-04T00:00:00Z",
          "Open": 367.34,
          "High": 369.21,
          "Low": 367.21,
          "Close": 367.87,
          "Volume": 5462200,
          "AdjOpen": 360.2702003425123,
          "AdjHigh": 362.10421045478023,
          "AdjLow": 360.1427023133172,
          "AdjClose": 360.79,
          "AdjVolume": 0
        }
      ],
      "DatasetAsColumns": {
        "Date": [
          "2022-01-03T00:00:00Z",
          "2022-01-04T00:00:00Z"
        ],
        "Open": [364.34,367.34],
        "High": [365.85,369.21],
        "Low": [362.3,367.21],
        "Close": [365.68,367.87],
        "Volume": [5624100,5462200],
        "AdjOpen": [357.3278897232553,360.2702003425123],
        "AdjHigh": [358.8088281694378,362.10421045478023],
        "AdjLow": [355.3271516900022,360.1427023133172],
        "AdjClose": [358.6421,360.79],
        "AdjVolume": [0,0]
      }
    },
    {
      "Symbol": "qqq",
      "URL": "https://query1.finance.yahoo.com/v7/finance/download/qqq?period1=1640995200\u0026period2=1641340800\u0026interval=1d\u0026events=history\u0026includeAdjustedClose=true",
      "Dataset": [
        {
          "Date": "2022-01-03T00:00:00Z",
          "Open": 399.05,
          "High": 401.94,
          "Low": 396.88,
          "Close": 401.68,
          "Volume": 40575900,
          "AdjOpen": 396.1306404849632,
          "AdjHigh": 398.9994978988249,
          "AdjLow": 393.9765157140012,
          "AdjClose": 398.7414,
          "AdjVolume": 0
        },
        {
          "Date": "2022-01-04T00:00:00Z",
          "Open": 402.24,
          "High": 402.28,
          "Low": 393.29,
          "Close": 396.47,
          "Volume": 58027200,
          "AdjOpen": 399.2972877645219,
          "AdjHigh": 399.3369951320402,
          "AdjLow": 390.4127642822912,
          "AdjClose": 393.5695,
          "AdjVolume": 0
        }
      ],
      "DatasetAsColumns": {
        "Date": [
          "2022-01-03T00:00:00Z",
          "2022-01-04T00:00:00Z"
        ],
        "Open": [399.05,402.24],
        "High": [401.94,402.28],
        "Low": [396.88,393.29],
        "Close": [401.68,396.47],
        "Volume": [40575900,58027200],
        "AdjOpen": [396.1306404849632,399.2972877645219],
        "AdjHigh": [398.9994978988249,399.3369951320402],
        "AdjLow": [393.9765157140012,390.4127642822912],
        "AdjClose": [398.7414,393.5695],
        "AdjVolume": [0,0]
      }
    }
  ]
}

Index

• func Init(appNameInit string)
• func NewGroup(liveData bool, dataFilePath string, name string, symbols []string) (*dl.Group, error)

Examples

• Package (LoadURLCollectionDataFromFile)
• NewGroup

Functions

func Init

func Init(appNameInit string)

func NewGroup

func NewGroup(liveData bool, dataFilePath string, name string, symbols []string) (*dl.Group, error)

Example

// For Example purposes liveData is set false. Programmatic callers can set this true
// to download data and get a Group returned for that data, or set the value to false
// to reprocess previously downloaded data.
liveData := false
group, err := NewGroup(liveData, testDataFilePath, "testGroup", testSymbols)
if err != nil {
	var t *testing.T
	t.Error()
}

fmt.Printf("%+v", group.String())

Output:

{
  "Name": "testGroup",
  "Issues": [
    {
      "Symbol": "dia",
      "URL": "https://query1.finance.yahoo.com/v7/finance/download/dia?period1=1640995200\u0026period2=1641340800\u0026interval=1d\u0026events=history\u0026includeAdjustedClose=true",
      "Dataset": [
        {
          "Date": "2022-01-03T00:00:00Z",
          "Open": 364.34,
          "High": 365.85,
          "Low": 362.3,
          "Close": 365.68,
          "Volume": 5624100,
          "AdjOpen": 357.3278897232553,
          "AdjHigh": 358.8088281694378,
          "AdjLow": 355.3271516900022,
          "AdjClose": 358.6421,
          "AdjVolume": 0
        },
        {
          "Date": "2022-01-04T00:00:00Z",
          "Open": 367.34,
          "High": 369.21,
          "Low": 367.21,
          "Close": 367.87,
          "Volume": 5462200,
          "AdjOpen": 360.2702003425123,
          "AdjHigh": 362.10421045478023,
          "AdjLow": 360.1427023133172,
          "AdjClose": 360.79,
          "AdjVolume": 0
        }
      ],
      "DatasetAsColumns": {
        "Date": [
          "2022-01-03T00:00:00Z",
          "2022-01-04T00:00:00Z"
        ],
        "Open": [364.34,367.34],
        "High": [365.85,369.21],
        "Low": [362.3,367.21],
        "Close": [365.68,367.87],
        "Volume": [5624100,5462200],
        "AdjOpen": [357.3278897232553,360.2702003425123],
        "AdjHigh": [358.8088281694378,362.10421045478023],
        "AdjLow": [355.3271516900022,360.1427023133172],
        "AdjClose": [358.6421,360.79],
        "AdjVolume": [0,0]
      }
    },
    {
      "Symbol": "qqq",
      "URL": "https://query1.finance.yahoo.com/v7/finance/download/qqq?period1=1640995200\u0026period2=1641340800\u0026interval=1d\u0026events=history\u0026includeAdjustedClose=true",
      "Dataset": [
        {
          "Date": "2022-01-03T00:00:00Z",
          "Open": 399.05,
          "High": 401.94,
          "Low": 396.88,
          "Close": 401.68,
          "Volume": 40575900,
          "AdjOpen": 396.1306404849632,
          "AdjHigh": 398.9994978988249,
          "AdjLow": 393.9765157140012,
          "AdjClose": 398.7414,
          "AdjVolume": 0
        },
        {
          "Date": "2022-01-04T00:00:00Z",
          "Open": 402.24,
          "High": 402.28,
          "Low": 393.29,
          "Close": 396.47,
          "Volume": 58027200,
          "AdjOpen": 399.2972877645219,
          "AdjHigh": 399.3369951320402,
          "AdjLow": 390.4127642822912,
          "AdjClose": 393.5695,
          "AdjVolume": 0
        }
      ],
      "DatasetAsColumns": {
        "Date": [
          "2022-01-03T00:00:00Z",
          "2022-01-04T00:00:00Z"
        ],
        "Open": [399.05,402.24],
        "High": [401.94,402.28],
        "Low": [396.88,393.29],
        "Close": [401.68,396.47],
        "Volume": [40575900,58027200],
        "AdjOpen": [396.1306404849632,399.2972877645219],
        "AdjHigh": [398.9994978988249,399.3369951320402],
        "AdjLow": [393.9765157140012,390.4127642822912],
        "AdjClose": [398.7414,393.5695],
        "AdjVolume": [0,0]
      }
    }
  ]
}