ChartTrendLine.CalculateY

method · ChartTrendLine · cAlgo.API

DesktopCLICloud

Calculates Y-axis value corresponding the specified bar index.

Environment behaviour

CLI — works differently. Created and kept with all its properties, but never drawn: the CLI displays no chart.

Cloud — works differently. Created and kept with all its properties, but never drawn: the cloud displays no chart.

Overloads

Signature	Description
`CalculateY(int barIndex)`	Calculates Y-axis value corresponding the specified bar index.
`CalculateY(DateTime time)`	Calculates Y-axis value corresponding the specified time value.

CalculateY(int barIndex)

Calculates Y-axis value corresponding the specified bar index.

C#Python

double CalculateY(int barIndex)

chartTrendLine.CalculateY(barIndex: int) -> float

Parameters

Name	C# type	Python type	Description
`barIndex`	`int`	`int`	Index of the bar.

Returns double — Y-axis value

Examples

C#Python

var trendLine = Chart.DrawTrendLine("support", Bars.OpenTimes.Last(20), Bars.LowPrices.Last(20), Bars.OpenTimes.Last(10), Bars.LowPrices.Last(10), Color.Red);
trendLine.ExtendToInfinity = true;
var supportValue = trendLine.CalculateY(Bars.Count - 1);
if (Bars.ClosePrices.LastValue < supportValue)
    Print("Price closed below the support trend line at {0}", supportValue);

trendLine = api.Chart.DrawTrendLine("support", api.Bars.OpenTimes.Last(20), api.Bars.LowPrices.Last(20), api.Bars.OpenTimes.Last(10), api.Bars.LowPrices.Last(10), Color.Red)
trendLine.ExtendToInfinity = True
supportValue = trendLine.CalculateY(api.Bars.Count - 1)
if api.Bars.ClosePrices.LastValue < supportValue:
    api.Print(f"Price closed below the support trend line at {supportValue}")

CalculateY(DateTime time)

Calculates Y-axis value corresponding the specified time value.

C#Python

double CalculateY(DateTime time)

chartTrendLine.CalculateY(time: DateTime) -> float

Parameters

Name	C# type	Python type	Description
`time`	`DateTime`	`DateTime`	The time.

Returns double — Y-axis value

Examples

C#Python

var trendLine = Chart.DrawTrendLine("resistance", Bars.OpenTimes.Last(20), Bars.HighPrices.Last(20), Bars.OpenTimes.Last(10), Bars.HighPrices.Last(10), Color.Red);
trendLine.ExtendToInfinity = true;
var resistanceValue = trendLine.CalculateY(Server.Time);
Print("Resistance trend line value now: {0}", resistanceValue);

trendLine = api.Chart.DrawTrendLine("resistance", api.Bars.OpenTimes.Last(20), api.Bars.HighPrices.Last(20), api.Bars.OpenTimes.Last(10), api.Bars.HighPrices.Last(10), Color.Red)
trendLine.ExtendToInfinity = True
resistanceValue = trendLine.CalculateY(api.Server.Time)
api.Print(f"Resistance trend line value now: {resistanceValue}")