What is the difference these?

[aytacasan]

Hello,

Often we need use indicators in other indicator plots calculation. We do this different ways. Wich is right or economic in point of memory usage:

1.Usage:
OnBarUpdate()
MACD macd = MACD(Input, 12, 26, 5);
MyPlot.Set(macd[0] * macd[1]);
2.Usage:
OnBarUpdate()
MyPlot.Set(MACD(Input, 12, 26, 5)[0] * MACD(Input, 12, 26, 5)[1]);
3.Usage:
Variables
MACD macd = null;
Initialize()
MACD macd = MACD(Input, 12, 26, 5);
OnBarUpdate()
MyPlot.Set(macd[0] * macd[1]);

Also for all usage types tell me please, what is mean use with and without new directive? I mean, for example for 1.Usage, what is the difference above and below 1.Usage sample:

1.Usage with new directive:
OnBarUpdate()
MACD macd = new MACD(Input, 12, 26, 5);
MyPlot.Set(macd[0] * macd[1]);

PS:I have an indicator and it has 2 parameters, and when i want to use it other indicator OnBarUpdate method, if i don't write new i receive an error. I think Ninja don't decide wich constructor must be use:

MyOtherIndicator OnBarUpdate()
MyIndicator myIndicator = new MyIndicator();
Plot.Set(myIndicator[0]);

If i write like this I receive an error:

MyOtherIndicator OnBarUpdate()
MyIndicator myIndicator = MyIndicator(); /// There is no constructor witout parameter
Plot.Set(myIndicator[0]);

Please explain me all usages and samples means separately.

Thanks...

[NinjaTrader_Tim]

Hi aytacasan,

Generally, our documentation does show how to access these in a different manner, by explicitly calling the indicators syntax, as in the MACD: http://www.ninjatrader-support.com/H...uide.html?MACD

If you are having any specific issues with using accessing them in this way, or any other supported way, please let me know and I may be able to offer some suggestions.

[eDanny]

Tim, since there can be big performance differences and memory usage differences, I think he is asking which example is best to use, not what your example is.

Dan

[NinjaTrader_Tim]

Thank you for you input eDanny.

aytacasan, please let me know if you'd like me to expand here.

[aytacasan]

Hi,

Thanks Dany for your clarify.

Tim, my first post have many different ways. And in terms of develop software all ways have different manner memory usage, so different performance. Please explain all usage step by step with advantage and disadvantage.

I need this because I'm writing complex indicators, they have complex aritmetic on backgroud. So this is very important for me. Moreover without know this details, we don't have to power of Ninja's flexibility. I mean issue is not simple like "Use same as examples".

Thanks for your understand.

[eDanny]

You may find your answers in this thread.

Dan

[NinjaTrader_Tim]

Hi aytacasan,

I appreciate your need to get your code written in the most optimal way, however I am not familiar with the way you have suggested, and cannot offer an advice on the difference.

[aytacasan]

Dany thanks for your help. I'll analyze your link I hope i find my answers from there.