LineGetPriceOnLogScale

2021年10月8日

Library "LineGetPriceOnLogScale"
This library provides a way to calculate the y-coordinate of a line on a specified bar when the chart scale is Log.
The built-in `line.get_price()` function only works with linear scale and gives incorrect results when the chart is in Log scale.
The library only works with `bar_index` values and `xloc.bar_index`-based lines, `time`-based lines will cause errors to appear.

coordGetPriceLog(x1, y1, x2, y2, xi) Calculates the y-coordinate on the specified bar on the logarithmic scale.
Only coordinates based on bar index are applicable, bar time will throw an error.
Parameters:

• x1: First X coordinate of a line, index of the bar where the line starts.
  
• y1: First Y coordinate of a line, price on the price scale.
  
• x2: Second X coordinate of a line, index of the bar where the line ends.
  
• y2: Second Y coordinate of a line, price on the price scale.
  
• xi: Index of the bar for which the price should be calculated.

Returns: Price of the line on the bar specified in `xi`, on the logarithmic scale.

lineGetPriceLog(_line, xi) Calculates the y-coordinate on the specified bar for the logarithmic scale. Takes a line.
Only lines drawn based on `xloc.bar_index` are applicable, `xloc.bar_time` will throw and error.
Parameters:

• _line: The line for which the price is calculated.
  
• xi: Index of the bar for which the bar should calculate the price.

Returns: Price of the line on the bar specified in `xi`, on the logarithmic scale.