New Features in cTrader Automate API 3.7
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New Features in cTrader Automate API 3.7
I think it is great that Spotware keeps updating and improving cTrader, and the new additions on 3.7. look very nice!
However, for someone like me with very limited understanding of programming, it is sometimes hard to keep up...
I have also difficulty understanding the API reference syntax, and I really only understand code by seeing examples of it in a code snippet, indicator or cBot.
Would it be possible to get some examples of how to use these new Ticks API data?
Ticks
Automate API adds Ticks to work with tick data.
Ticks is a collection of Tick objects with following propertiesTick.Bid Tick.Ask Tick.TimeNote, in the previous versions tick data was accessible only if cBot or indicator was running on Tick1 chart and only for bid prices using old MarketSeries. With the new API you can access tick data from any timeframe and use bid and ask prices
OpenTime.GetIndexByTime replaced by what?
It's quite frustrating to run into warnings and error messages due to thwe 3,7 changes and there is no instructions on how to replace the old code!
for example, I have:
public Bars hour;
hour = MarketData.GetBars(TimeFrame.Hour);
public override void Calculate(int index)
{
int i_hour = hour.OpenTime.GetIndexByTime(MarketSeries.OpenTime[index]);
// int i_hour = hour.OpenTime.GetIndexByTime(Bars.OpenTimes[index]);
....
I cannot find anywhere how to replace
hour.OpenTime.GetIndexByTime(MarketSeries.OpenTime[index]);
I tried just adding
Bars.OpenTimes[index]
instead of
MarketSeries.OpenTime[index]
but still getting an error message, and the problem is the
OpenTime
I just cannot find anywhere what to replace it with?
I also have:
_hour[index] = hour.Open[i_hour];
What to replace "Open" with?
API reference is a nightmare to try to find anything (expecially since I do not even know what I'm looking for as old API definitions are removed and new ones I'm not familiar with) and if I do find syntax I usually do not understand it because there are no or only a few short examples...
Spotware , when you make large changes like 3.7. updates to you API code, please help us less professional programmers to translate the code, that is if you want to keep people like me here... Would it be totally impossible to have the error message tell what to replace old code with?
Hi Jan,
I am not sure how clearer we can make the messages. You get three messages explaining to you exactly what do you need to do.
So as per the messages above
int i_hour = hour.OpenTime.GetIndexByTime(MarketSeries.OpenTime[index]);should become
int i_hour = hour.OpenTimes.GetIndexByTime(Bars.OpenTimes[index]);Is it not understood from the message
Error CS0618: 'cAlgo.API.Internals.MarketSeries.OpenTime' is obsolete: 'Use Bars.OpenTimes instead'
that MarketSeries.OpenTime should become Bars.OpenTimes?
Also if you use
var i = MarketSeries.Open[0];You will get
which I think it describes clearly that it should be changed to
var i = Bars.OpenPrices[0];as a result
_hour[index] = hour.Open[i_hour]should become
_hour[index] = hour.OpenPrices[i_hour]Best Regards,
Panagiotis
Problems with substitutions
I'm still having issues with substituting new API definitions. I tried to do exactly as the warning messages direct, but still unable to find the correct format and getting error messages.
I have:
using System;
using cAlgo.API;
using cAlgo.API.Internals;
using cAlgo.API.Indicators;
using cAlgo.Indicators;
namespace cAlgo.Indicators
{
[Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
public class HighestHighLowestLow2 : Indicator
{
[Parameter(" Period", DefaultValue = 10, MinValue = 1)]
public int Period { get; set; }
[Parameter(" Timeframe")]
public TimeFrame AnotherTimeFrame { get; set; }
[Output("Close Up", LineColor = "Red")]
public IndicatorDataSeries CloseUp { get; set; }
[Output("High", LineColor = "Pink")]
public IndicatorDataSeries High { get; set; }
[Output("Close Down", LineColor = "Blue")]
public IndicatorDataSeries CloseDown { get; set; }
[Output("Low", LineColor = "Aqua")]
public IndicatorDataSeries Low { get; set; }
public MarketSeries dataseries;
// public Bars dataseries;
protected override void Initialize()
{
dataseries = MarketData.GetSeries(Symbol, AnotherTimeFrame);
// dataseries = MarketData.GetBars(Symbol, AnotherTimeFrame);
}
public override void Calculate(int index)
{
// Top[index] = MarketSeries.High.Maximum(PeriodsHigh);
//Bottom[index] = MarketSeries.Low.Minimum(PeriodsLow);
High[index] = dataseries.High.Maximum(Period);
//High[index] = dataseries.Bars.HighPrices.Maximum(Period);
CloseUp[index] = dataseries.Close.Maximum(Period);
CloseDown[index] = dataseries.Close.Minimum(Period);
Low[index] = dataseries.Low.Minimum(Period);
}
}
}
I'm getting warnings:
For example if I change
public MarketSeries dataseries;
to
public Bars dataseries;
as the instruction says, I get an error:
Sorry to trouble with a similar issue, but I believe I'm not alone here with these 3.7 API substitution troubles...?
Hi Jani,
You do the substitution but you do not change the line below to
dataseries = MarketData.GetSeries(Symbol, AnotherTimeFrame);to
dataseries = MarketData.GetBars(AnotherTimeFrame, Symbol.Name);Here is the updated code
using System;
using cAlgo.API;
using cAlgo.API.Internals;
using cAlgo.API.Indicators;
using cAlgo.Indicators;
namespace cAlgo.Indicators
{
[Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
public class HighestHighLowestLow2 : Indicator
{
[Parameter(" Period", DefaultValue = 10, MinValue = 1)]
public int Period { get; set; }
[Parameter(" Timeframe")]
public TimeFrame AnotherTimeFrame { get; set; }
[Output("Close Up", LineColor = "Red")]
public IndicatorDataSeries CloseUp { get; set; }
[Output("High", LineColor = "Pink")]
public IndicatorDataSeries High { get; set; }
[Output("Close Down", LineColor = "Blue")]
public IndicatorDataSeries CloseDown { get; set; }
[Output("Low", LineColor = "Aqua")]
public IndicatorDataSeries Low { get; set; }
public Bars dataseries;
// public Bars dataseries;
protected override void Initialize()
{
dataseries = MarketData.GetBars(AnotherTimeFrame, Symbol.Name);
// dataseries = MarketData.GetBars(Symbol, AnotherTimeFrame);
}
public override void Calculate(int index)
{
// Top[index] = MarketSeries.High.Maximum(PeriodsHigh);
//Bottom[index] = MarketSeries.Low.Minimum(PeriodsLow);
High[index] = dataseries.HighPrices.Maximum(Period);
//High[index] = dataseries.Bars.HighPrices.Maximum(Period);
CloseUp[index] = dataseries.ClosePrices.Maximum(Period);
CloseDown[index] = dataseries.ClosePrices.Minimum(Period);
Low[index] = dataseries.LowPrices.Minimum(Period);
}
}
}
Best Regards,
Panagiotis
RE:
Thank you Panagiotis,
This was very helpful!
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