Since MTx doesn't use NaN nor does any functions return it, an implementation can not be done.

Since indicator functions can, on error, return *EMPTY_VALUE* **or** zero **(or** any other number), it can not be done. (E.g. Asking for iMA of length 10, from [Bars-1…Bars-9].)

double nz(double v, double r=0.0){ if(v == EMPTY_VALUE) v = r; return r; }

EMA(x, t)=> EMA = x EMA := na(EMA[1]) ? x : (x - nz(EMA[1]))*(2/(t + 1)) + nz(EMA[1]) EMA //Calling Call = EMA(tr(true),14 ))William Roeder:

Since MTx doesn't use NaN nor does any functions return it, an implementation can not be done.

Since indicator functions can, on error, return *EMPTY_VALUE* **or** zero **(or** any other number), it can n

ot be done. (E.g. Asking for iMA of length 10, from [Bars-1…Bars-9].)

In Trading view float and series float data types makes easy when referencing previous values of variable[1], basically you can reference previous value of variable(if there is).

MLQ4 only double NO series double data type -- This what makes difficult ( Impossible ) when referencing previous value of variable.

How do you reference Previous value of a variable, not the previous value of OHCLC or volume, But Previous value of a variable.

Can Anyone on the plant convert this function in mlq4. Thanks : )

**Files:**

**Dominik Egert:**

Thanks : )

My Question how do you make (is it possible) variable Series i,e,, which can be referenced by a history operator [] , like we do for OHLCV ( please don't confuse with arrays ). ( in mlq4 )

Problem in referencing previous values of <data type>variable[1] that DOES'T include built in series variable OHLCV .

**Files:**

**NAThunder:**

First of all, I am not good at English. I'm sorry.

The tradingview has a function called nz.

I want to implement this nz function in metatrader 5, but I don't know what to do....

Can you help me?

This is a tradingview reference page for the nz function.

Replaces NaN values with zeros (or given value) in a series.

nz(x, y) → integer

EXAMPLE

nz(sma(close, 100))

y (float) Value that will be inserted instead of all NaN values in x series.

You can use this:

double nz(double val, double def = 0.0) { return (MathClassify(val)!=FP_NAN) ? val : def; } void OnStart() { #define PRINT(A) Print( #A + " = ", (A)) double nan1=double("nan"); double nan2=MathSqrt(-1); double nan3=MathLog(-1); double nan4=MathArcsin(2.0); PRINT(nan1); PRINT(nan2); PRINT(nan3); PRINT(nan4); PRINT(nz(nan1)); PRINT(nz(nan2)); PRINT(nz(nan3)); PRINT(nz(nan4)); } // output: /* 2021.07.24 08:54:39.313 test (GBPUSD,H1) nan1 = nan 2021.07.24 08:54:39.313 test (GBPUSD,H1) nan2 = -nan(ind) 2021.07.24 08:54:39.313 test (GBPUSD,H1) nan3 = -nan(ind) 2021.07.24 08:54:39.313 test (GBPUSD,H1) nan4 = -nan(ind) 2021.07.24 08:54:39.313 test (GBPUSD,H1) nz(nan1) = 0.0 2021.07.24 08:54:39.313 test (GBPUSD,H1) nz(nan2) = 0.0 2021.07.24 08:54:39.313 test (GBPUSD,H1) nz(nan3) = 0.0 2021.07.24 08:54:39.313 test (GBPUSD,H1) nz(nan4) = 0.0 */

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First of all, I am not good at English. I'm sorry.

The tradingview has a function called nz.

I want to implement this nz function in metatrader 5, but I don't know what to do....

Can you help me?

This is a tradingview reference page for the nz function.

Replaces NaN values with zeros (or given value) in a series.

nz(x, y) → integer

EXAMPLE

nz(sma(close, 100))

y (float) Value that will be inserted instead of all NaN values in x series.