Candles prices horizontal

priceCandles.ts

// If you run this in Deno:

priceCandles (prices: PriceBars) {
  // Function scope finals
  const bars = prices.PriceBars
  const lows = bars.map(bar => bar.Low)
  const highs = bars.map(bar => bar.High)
  const high = Math.max(...highs)
  const low = Math.min(...lows)
  const diff = high - low
  const blockSize = 100 / diff
  const colWidth = Math.ceil(blockSize) - blockSize/3

  // Debug print finals
  console.debug(
    low, high,
    diff.toFixed(1),
    green(blockSize.toFixed(1)),
    colWidth.toFixed(1),
    prices.PartialPriceBar,
  )

  // Print header
  let header = ' '.repeat(69)
  for (let i=0; i<=9; i++)
    header += sprintf('| %-*d', 9, (low + i * diff / 9).toFixed(diff < 9 ? 1 : 0))
  console.log(header)

  // Loop thru bars printing candles
  for (const bar of bars) {
    const timestamps = bar.BarDate.match(/\d+/)
    if (timestamps) {
      const lowOffset = bar.Low - low
      const lowBlocks = Math.floor(lowOffset * blockSize)
      const highOffset = bar.High - low - lowOffset
      const highBlocks = Math.floor(highOffset * blockSize)
      const openIndex = Math.round((bar.Open - bar.Low) / (bar.High - bar.Low) * highBlocks)
      const closeIndex = Math.round((bar.Close - bar.Low) / (bar.High - bar.Low) * highBlocks)
      const min = Math.min(openIndex, closeIndex)
      const max = Math.max(openIndex, closeIndex)
      const body = max > min ? '='.repeat(max - min - 1) : ''
      let candle = '-'.repeat(highBlocks)
      candle = candle.substring(0, openIndex) + 'O' + candle.substring(openIndex + 1)
      candle = candle.substring(0, closeIndex) + 'C' + candle.substring(closeIndex + 1)
      candle = candle.substring(0, min + 1) + body + candle.substring(max + (max > min ? 0 : 1))
      candle = openIndex < closeIndex ? green(candle) : red(candle)
      console.log(
        new Date(+timestamps[0]),
        blue  (sprintf('%4.1f', bar.Low.toString())),
        red   (sprintf('%4.1f', bar.Open.toString())),
        yellow(sprintf('%4.1f', bar.Close.toString())),
        blue  (sprintf('%4.1f', bar.High.toString())),
        yellow(sprintf('%2d', Math.round(lowOffset).toString())),
        blue  (sprintf('%2d', lowBlocks.toString())),
        blue  (sprintf('%2d', highBlocks.toString())),
        yellow(sprintf('%2d', openIndex.toString())),
        yellow(sprintf('%2d', closeIndex.toString())),
        ' '.repeat(lowBlocks),
        candle,
      )
    }
  }

}

// and prices looks like this:

{
  PriceBars: [
    {
      BarDate: "/Date(1648598400000)/",
      Open: 1919.53,
      High: 1938.61,
      Low: 1916.02,
      Close: 1932.73
    },
    {
      BarDate: "/Date(1648684800000)/",
      Open: 1933.24,
      High: 1949.9,
      Low: 1919.29,
      Close: 1937.41
    },
    {
      BarDate: "/Date(1648771200000)/",
      Open: 1937.48,
      High: 1939.57,
      Low: 1918.09,
      Close: 1925.22
    },
    {
      BarDate: "/Date(1649030400000)/",
      Open: 1925.55,
      High: 1936.94,
      Low: 1915.61,
      Close: 1932.47
    },
    {
      BarDate: "/Date(1649116800000)/",
      Open: 1932.97,
      High: 1944.66,
      Low: 1918.02,
      Close: 1923.76
    },
    {
      BarDate: "/Date(1649203200000)/",
      Open: 1923.83,
      High: 1933.54,
      Low: 1915.22,
      Close: 1925.1
    },
    {
      BarDate: "/Date(1649289600000)/",
      Open: 1925.02,
      High: 1937.82,
      Low: 1920.64,
      Close: 1931.87
    },
    {
      BarDate: "/Date(1649376000000)/",
      Open: 1931.73,
      High: 1948.21,
      Low: 1927.8,
      Close: 1948.15
    },
    {
      BarDate: "/Date(1649635200000)/",
      Open: 1946.57,
      High: 1969.66,
      Low: 1940.05,
      Close: 1953.71
    },
    {
      BarDate: "/Date(1649721600000)/",
      Open: 1952.97,
      High: 1978.71,
      Low: 1949.75,
      Close: 1966.66
    }
  ],
  PartialPriceBar: {
    BarDate: "/Date(1649808000000)/",
    Open: 1966.88,
    High: 1981.59,
    Low: 1962.92,
    Close: 1977.96
  }
}

// then the console might look like this:

1915.22 1978.71 63.5 1.6 1.5 {
  BarDate: "/Date(1649808000000)/",
  Open: 1966.88,
  High: 1981.59,
  Low: 1962.92,
  Close: 1977.96
}

//                                                                      | 1915     | 1922     | 1929     | 1936     | 1943     | 1950     | 1958     | 1965     | 1972     | 1979
// 2022-03-30T00:00:00.000Z 1916.0 1919.5 1932.7 1938.6  1  1 35  5 26   -----O====================C--------
// 2022-03-31T00:00:00.000Z 1919.3 1933.2 1937.4 1949.9  4  6 48 22 28        ----------------------O=====C-------------------
// 2022-04-01T00:00:00.000Z 1918.1 1937.5 1925.2 1939.6  3  4 33 30 11      -----------C==================O--
// 2022-04-04T00:00:00.000Z 1915.6 1925.6 1932.5 1936.9  0  0 33 15 26  ---------------O==========C------
// 2022-04-05T00:00:00.000Z 1918.0 1933.0 1923.8 1944.7  3  4 41 23  9      ---------C=============O-----------------
// 2022-04-06T00:00:00.000Z 1915.2 1923.8 1925.1 1933.5  0  0 28 13 15  -------------O=C------------
// 2022-04-07T00:00:00.000Z 1920.6 1925.0 1931.9 1937.8  5  8 27  7 18          -------O==========C--------
// 2022-04-08T00:00:00.000Z 1927.8 1931.7 1948.2 1948.2 13 19 32  6 32                     ------O=========================C
// 2022-04-11T00:00:00.000Z 1940.1 1946.6 1953.7 1969.7 25 39 46 10 21                                         ----------O==========C------------------------
// 2022-04-12T00:00:00.000Z 1949.8 1953.0 1966.7 1978.7 35 54 45  5 26                                                        -----O====================C------------------
// { span: 1, PriceBars: 10, priceType: "MID", interval: "DAY" }