Read history data and buffer data from custom indicator ( MQL "mode" and "shift" equivalent )

Created at 23 Mar 2014, 15:19

dimak

Joined 22.03.2014

Read history data and buffer data from custom indicator ( MQL "mode" and "shift" equivalent )
23 Mar 2014, 15:19

Hello ,

I'm trying to read history data from indicator buffer ( ZigZag Indicator ).

In MQL I used following code :

iCustom(Symbol(),Timeframe(),"ZigZag",ExtDepth,ExtDeviation,ExtBackstep,0,1)

Last values in this example are:

mode : Line index. Can be from 0 to 7 and must correspond with the index, specified in call of the SetIndexBuffer() function.

shift : Index of the value taken from the indicator buffer (shift relative to the current bar the given amount of periods ago).

How can I access these fields using CAlgo ?

Here is source code of ZigZag Indicator : /algos/indicators/show/157

Thank you.

@dimak

Replies

Spotware
24 Mar 2014, 09:45

Please read Referencing Custom Indicators.

If you prefer shift-style indexes, you will like method Last of DataSeries class.

@Spotware

6878977
02 Oct 2019, 22:54

RE:

Spotware said:

Please read Referencing Custom Indicators.

If you prefer shift-style indexes, you will like method Last of DataSeries class.

But what about "mode"? How can I chose the buffer?

For example, I have an indicator, I know that it has 5 buffers. How can I get the data of the 3rd buffer 9 candles back?

@6878977

PanagiotisCharalampous
03 Oct 2019, 08:12

Hi 6878977,

Thanks for posting in our furum. Indicator outputs are explicitely defined in cTrader Automate. See below an example from Sample Alligator


        [Output("Jaws", LineColor = "Blue")]
        public IndicatorDataSeries Jaws { get; set; }

        [Output("Teeth", LineColor = "Red")]
        public IndicatorDataSeries Teeth { get; set; }

        [Output("Lips", LineColor = "Lime")]
        public IndicatorDataSeries Lips { get; set; }

If you want to get the data 9 candles back for e.g. Lips, you just need to call Lips.Last(9).

Best Regards,

Panagiotis

@PanagiotisCharalampous

6878977
03 Oct 2019, 09:48

RE:

Panagiotis Charalampous said:

Hi 6878977,

Thanks for posting in our furum. Indicator outputs are explicitely defined in cTrader Automate. See below an example from Sample Alligator
        [Output("Jaws", LineColor = "Blue")]
        public IndicatorDataSeries Jaws { get; set; }

        [Output("Teeth", LineColor = "Red")]
        public IndicatorDataSeries Teeth { get; set; }

        [Output("Lips", LineColor = "Lime")]
        public IndicatorDataSeries Lips { get; set; }
If you want to get the data 9 candles back for e.g. Lips, you just need to call Lips.Last(9).

Best Regards,

Panagiotis

Thanks so much for the quick reply!
What should I do if I don’t have the source code and I don’t see the name of the Data Series?

For example:

        [Output("Sweet Lips", LineColor = "Lime")]
        public IndicatorDataSeries Lips { get; set; }

So the display name is "Sweet Lips". The real name is "Lips". Remember, I don’t have the source code. How do I access this buffer?

@6878977

PanagiotisCharalampous
03 Oct 2019, 10:08

Hi 6878977,

If you do not have access to the source code, you cannot reference the indicator in your cBot.

Best Regards,

Panagiotis

@PanagiotisCharalampous

6878977
03 Oct 2019, 10:28

RE:

Panagiotis Charalampous said:

Hi 6878977,

If you do not have access to the source code, you cannot reference the indicator in your cBot.

Best Regards,

Panagiotis

OK, got it! Thank!

@6878977

Copyright © 2024 Spotware Systems Ltd. All rights reserved.
cTrader Ltd offers through its group of companies the cTrader platform. The information on this website is for general informational purposes only and does not constitute financial or investment advice. cTrader does not solicit retail investors. Reliance on this information is at your own risk.