how calculate a body of a candel?

[faustf]

hi guys i try to calculate a body of candel in 14" position how is possible to do that i try open[14]-close[14] but return me error if i use 0 return me many value o_O
i dont understund thankz

[NinjaTrader_Jesse]

Hello faustf ,

Thank you for the post.

Are you asking how to get the candle for 14 bars ago?

If so that would look like this:

if(CurrentBar < 14) return; 
Print(Close[14]);

https://ninjatrader.com/support/helpGuides/nt7/close.htm

I look forward to being of further assistance.

[faustf]

but is not possible call directly Close[14];??

[NinjaTrader_Jesse]

Hello faustf,

I am not sure what you are asking, the code I just provided is calling Close[14] directly. Can you explain your question further?

Are you asking about the condition I had added: "if(CurrentBar < 14) return; " ?

I look forward to being of further assistance.

[faustf]

protected override void OnBarUpdate()
{
// Use this method for calculating your indicator values. Assign a value to each
// plot below by replacing 'Close[0]' with your own formula.
Plot0.Set(Close[0]);
double barOpenPrice = Open[14];
double barClosePrice = Close[14];
double barLong=( barOpenPrice- barClosePrice);
Print( barLong);
}
in this mode return me error

[NinjaTrader_Jesse]

Hello faustf,

Yes you will get an error with that, you need the condition:
if(CurrentBar < 14) return;

protected override void OnBarUpdate()
{
if(CurrentBar < 14) return;

//the rest of your logic

I look forward to being of further assistance.

[bltdavid]

hi guys i try to calculate a body of candel in 14" position how is possible to do that i try open[14]-close[14] but return me error if i use 0 return me many value o_O
i dont understund thankz

What does 14" position mean?

When you use Open[14] it means 14 bars ago relative to the current bar that just closed.
As each new bar is added to chart, the actual bar referenced by Open[14] keeps changing,
it may look like an array index but, strictly speaking, it is not. Remember, when you use
Open and Close in NinjaScript, these are DataSeries, not arrays.

If X is an Array then X[n] means the nth value from the beginning.
If X is a DataSeries then X[n] means the nth value from the end.

Open[14] means 14 bars backwards -- as in, 14 bars behind the bar that just closed.

Why do you need the body of the candle 14 bars ago?

Per chance,
Are you using a daily chart and trying to look at the bar from 2 weeks ago?

Can you explain more precisely what you're wanting to do?

[faustf]

i try to understund how work nijatrader , usally i use metatrader , but have many limits , and i want know NJ Platform and logic .
so , i try to simply return a dimention of a candel 14 in 30 min , why 14 ? ....is random , i like 14 , but my finish plan is (if arrive to understund somthing o_O) find a univoc dimention of candel. example suppose you have 2 chart in Y you have price in X you have time (is chart ) so inside of chart A you have a candel long 0.5cm and inside of chart B you have the same candel 0.5cm , but if you use open and close for have a size of body if instruments is different return 2 value differents but for my eye and for my analisys is the same candel , or i consider the same , therfore how is possible resolve it ?
but for start i want to understund how work NJ
i try this code but why return me all this numbner ???

protected override void OnBarUpdate()
{
// Use this method for calculating your indicator values. Assign a value to each
// plot below by replacing 'Close[0]' with your own formula.
Plot0.Set(Close[0]);
if(CurrentBar < 14) return;
Print(Open[14]-Close[14]);

}

0,000850000000000017
9,9999999999989E-05
-0,000399999999999956
0,000349999999999961
0,000399999999999956
-0,000199999999999978
-0,00154999999999994
0,000249999999999972
0,000399999999999956
-4,99999999999945E-05
0,000300000000000078
0,000199999999999978
-0,000500000000000056
0,000149999999999983
4,99999999999945E-05
0,000350000000000072
0,00149999999999995
-0,000750000000000028
0,00119999999999998
0,00180000000000002
-0,000349999999999961
9,9999999999989E-05
0,000650000000000039
-0,000199999999999978
-0,000800000000000023
-0,000950000000000006
-0,000499999999999945
0,000199999999999978
-0,000199999999999978
-4,99999999999945E-05
-0,000750000000000028
-0,000849999999999906
0,000549999999999939
-4,99999999999945E-05
0,000249999999999972
-0,000749999999999917
4,99999999999945E-05
0,000399999999999956
-0,000700000000000034
-0,000549999999999939
0,000599999999999934
-0,000149999999999983
0,001
-0,000649999999999928
-0,000750000000000028
-0,000600000000000045
0,00134999999999996
0
0
0,000400000000000067
-4,99999999999945E-05
0
0,000599999999999934
9,9999999999989E-05
9,9999999999989E-05
0,000200000000000089
0
0,000199999999999978
-0,000450000000000061
4,99999999999945E-05
0,000399999999999956
0,000700000000000034
9,9999999999989E-05
-0,000700000000000034
-0,000199999999999978
-0,00114999999999998
0,000750000000000028
-0,000149999999999983
-0,000399999999999956
0,00119999999999998
0,000650000000000039
0,000199999999999978
0,000750000000000028
0,000599999999999934
-0,000599999999999934
-0,00055000000000005
-0,000399999999999956
-0,00165000000000004
-0,000249999999999972
-0,000199999999999978
0,000499999999999945
0,000150000000000095
0
0,00129999999999997
-0,000750000000000028
-0,000499999999999945
0,00259999999999994
0,000600000000000045
-0,000800000000000023
0,000500000000000056
-0,000200000000000089
0,00120000000000009
0,000750000000000028
-0,0011500000000001
0,0001000000000001
0,000250000000000083
4,99999999999945E-05
-9,9999999999989E-05
-0,000500000000000056
0,00155000000000005
0,000849999999999906
-0,000399999999999956
0
-4,99999999999945E-05
0,000149999999999983
4,99999999999945E-05
-0,000399999999999956
9,9999999999989E-05
-0,000399999999999956
0,00119999999999998
0,000700000000000034
0,000799999999999912
0,000149999999999983
0
0,00169999999999992
4,99999999999945E-05
0,000300000000000078
-0,00105
0,000299999999999967
-0,000249999999999972
-0,000250000000000083
0,000450000000000061
-0,00055000000000005
-0,00165000000000004
-0,000249999999999972
0,00114999999999998
0,000199999999999978
-0,000249999999999972
0,000199999999999978
0,000250000000000083
-0,000200000000000089
-4,99999999999945E-05
-0,00129999999999997
0,00109999999999999
-0,00119999999999998
0,000249999999999972
0,000750000000000028
0,000499999999999945
0,000249999999999972
-0,000149999999999983
-0,000149999999999983
-0,000249999999999972
0,000699999999999923
-0,000499999999999945
0,000149999999999983
0,000399999999999956
-0,000699999999999923
0,000149999999999983
0,000749999999999917
0,000750000000000028
0,000349999999999961
0,000299999999999967
-0,000450000000000061
-0,00124999999999997
-0,000800000000000023
-0,000499999999999945
-0,000149999999999983
-0,00135000000000007

[bltdavid]

NinjaScript is event driven -- you've got to learn to insert your mind into what
the indicator is doing. It's a learning curve, everybody goes through it.

The event driven design of every indicator is that it sees each bar on your chart.
Yes, I mean every bar, even that very first bar if you scroll all the way to left on
your chart. Yep, your indicator gets to process every one of these bars.

Well, how does it do that?
The internal NinjaScript framework calls your OnBarUpdate at the close of each bar.

So, why all the prints?
Well, let's say there were 500 bars in your chart, you're probably not seeing all 500 at
once, your screen is probably not big enough, so you have to scroll to the left to see
more -- but your indicator saw all 500 bars -- and your OnBarUpdate was called 500
times.

Therefore, if your OnBarUpdate is automatically called once for each bar on your
chart, then naturally you will see output of your print statements for each bar.

Make sense?

[bltdavid]

why 14 ? ....is random , i like 14
i try this code but why return me all this numbner ???

protected override void OnBarUpdate()
{
// Use this method for calculating your indicator values. Assign a value to each
// plot below by replacing 'Close[0]' with your own formula.
Plot0.Set(Close[0]);
if(CurrentBar < 14) return;
Print(Open[14]-Close[14]);
}

If you want to see output for the 14th bar only, try this,

protected override void OnBarUpdate()
{
    if (CurrentBar == 14)
    {
        Print(Open[0]-Close[0]);
    }
}

Do you understand why this works?

[faustf]

i try your code for look only one bar
protected override void OnBarUpdate()
{
// Use this method for calculating your indicator values. Assign a value to each
// plot below by replacing 'Close[0]' with your own formula.
Plot0.Set(Close[0]);
if(CurrentBar == 14) return;
Print(Open[0]-Close[0]);

}
but return me all this

0,000850000000000017
9,9999999999989E-05
-0,000399999999999956
0,000349999999999961
0,000399999999999956
-0,000199999999999978
-0,00154999999999994
0,000249999999999972
0,000399999999999956
-4,99999999999945E-05
0,000300000000000078
0,000199999999999978
-0,000500000000000056
0,000149999999999983
0,000350000000000072
0,00149999999999995
-0,000750000000000028
0,00119999999999998
0,00180000000000002
-0,000349999999999961
9,9999999999989E-05
0,000650000000000039
-0,000199999999999978
-0,000800000000000023
-0,000950000000000006
-0,000499999999999945
0,000199999999999978
-0,000199999999999978
-4,99999999999945E-05
-0,000750000000000028
-0,000849999999999906
0,000549999999999939
-4,99999999999945E-05
0,000249999999999972
-0,000749999999999917
4,99999999999945E-05
0,000399999999999956
-0,000700000000000034
-0,000549999999999939
0,000599999999999934
-0,000149999999999983
0,001
-0,000649999999999928
-0,000750000000000028
-0,000600000000000045
0,00134999999999996
0
0
0,000400000000000067
-4,99999999999945E-05
0
0,000599999999999934
9,9999999999989E-05
9,9999999999989E-05
0,000200000000000089
0
0,000199999999999978
-0,000450000000000061
4,99999999999945E-05
0,000399999999999956
0,000700000000000034
9,9999999999989E-05
-0,000700000000000034
-0,000199999999999978
-0,00114999999999998
0,000750000000000028
-0,000149999999999983
-0,000399999999999956
0,00119999999999998
0,000650000000000039
0,000199999999999978
0,000750000000000028
0,000599999999999934
-0,000599999999999934
-0,00055000000000005
-0,000399999999999956
-0,00165000000000004
-0,000249999999999972
-0,000199999999999978
0,000499999999999945
0,000150000000000095
0
0,00129999999999997
-0,000750000000000028
-0,000499999999999945
0,00259999999999994
0,000600000000000045
-0,000800000000000023
0,000500000000000056
-0,000200000000000089
0,00120000000000009
0,000750000000000028
-0,0011500000000001
0,0001000000000001
0,000250000000000083
4,99999999999945E-05
-9,9999999999989E-05
-0,000500000000000056
0,00155000000000005
0,000849999999999906
-0,000399999999999956
0
-4,99999999999945E-05
0,000149999999999983
4,99999999999945E-05
-0,000399999999999956
9,9999999999989E-05
-0,000399999999999956
0,00119999999999998
0,000700000000000034
0,000799999999999912
0,000149999999999983
0
0,00169999999999992
4,99999999999945E-05
0,000300000000000078
-0,00105
0,000299999999999967
-0,000249999999999972
-0,000250000000000083
0,000450000000000061
-0,00055000000000005
-0,00165000000000004
-0,000249999999999972
0,00114999999999998
0,000199999999999978
-0,000249999999999972
0,000199999999999978
0,000250000000000083
-0,000200000000000089
-4,99999999999945E-05
-0,00129999999999997
0,00109999999999999
-0,00119999999999998
0,000249999999999972
0,000750000000000028
0,000499999999999945
0,000249999999999972
-0,000149999999999983
-0,000149999999999983
-0,000249999999999972
0,000699999999999923
-0,000499999999999945
0,000149999999999983
0,000399999999999956
-0,000699999999999923
0,000149999999999983
0,000749999999999917
0,000750000000000028
0,000349999999999961
0,000299999999999967
-0,000450000000000061
-0,00124999999999997
-0,000800000000000023
-0,000499999999999945
-0,000149999999999983
-0,00135000000000007
0,000850000000000017
-0,000499999999999945
-0,000300000000000078
-0,000349999999999961
0,00044999999999995
-0,000599999999999934
0,000549999999999939
4,99999999999945E-05
0,000200000000000089
-0,00105
0,000549999999999939
-0,000149999999999983
0,00114999999999998
-0,000299999999999967
-0,000249999999999972
-0,000800000000000023
0,000900000000000012
0,000499999999999945

[faustf]

i understund a logic behind or i accepts logic behind but why this sense ?, example in MT (sorry but i come from here), you call simply open[14]-Close[14] finish , not must use a if ,probably do the same work but internal of method Open , but no problem i will study

[bltdavid]

i try your code for look only one bar
protected override void OnBarUpdate()
{
// Use this method for calculating your indicator values. Assign a value to each
// plot below by replacing 'Close[0]' with your own formula.
Plot0.Set(Close[0]);
if(CurrentBar == 14) return;
Print(Open[0]-Close[0]);

}
but return me all this

Apparently, you did not try my code sample.
The code above is not the code sample I provided.

[faustf]

aaaa retrun sorry

[faustf]

questions i try to use the code for mesure a bar i want in this example mesure a 7* candel , the first candel is 0 ... right? ,i first mesure with cross air and with calc i did do a count and after run a code but , result is not the same why???