How to group a lot exponent in MQL4 / MT4?
How to group a lot exponent in MQL4 / MT4?
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Roller · External communityPost link
External question — Stack Overflow Stack Exchange
Author: Roller
Original post: https://stackoverflow.com/questions/64880875
License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/
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I manage to get normal lot exponent but I need to change it a bit by grouping example in the picture. Can someone guide me how to get the lot exponent but with a grouping technique Group=
5
Exponent=
1.8
?
double GroupExponent(int type)
{
double lot=0,exponent=1.8,group=5,initialLot=0.01;
if(type==OP_SELL)
............. //<---- Do i need to loop this area ?
lot= initialLot * MathPow(exponent,TotalSell());
return lot;
}
int TotalSell()
{
int Sell=0;
for(int trade=OrdersTotal()-1; trade>=0; trade--)
{
if(!OrderSelect(trade,SELECT_BY_POS,MODE_TRADES))continue;
if(OrderSymbol()==Symbol() && OrderType()==OP_SELL))
Sell++;
}
return Sell;
}
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user3666197 · External communityPost link
External answer — Stack Overflow Stack Exchange
Author: user3666197
Original post: https://stackoverflow.com/a/65022346
License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/
Adaptation: HTML converted to plain text; contact email addresses removed.
Q
:
"How to group a lot exponent in MQL4 / MT4?"
Well, technically speaking, the
Exponent = 1.8
is not an exponent per-se, but rather a scaling constant, that
gets exponentiated
by plain ordinals.
See the calculation formula of the Lot-sizings, that match the Table above:
|
|>>> for aLayerNUMBER in range( 1, 11 ):
... aVolumeInLOTs = 0.01 * ( 1.8 ** ( aLayerNUMBER - 1 ) )
... print "LAYER: {0: >2d} - {1: >5.2f} Lots".format( aLayerNUMBER,
... aVolumeInLOTs
... )
...
LAYER: 1 - 0.01 Lots
LAYER: 2 - 0.02 Lots
LAYER: 3 - 0.03 Lots
LAYER: 4 - 0.06 Lots
LAYER: 5 - 0.10 Lots
LAYER: 6 - 0.19 Lots
LAYER: 7 - 0.34 Lots
LAYER: 8 - 0.61 Lots
LAYER: 9 - 1.10 Lots
LAYER: 10 - 1.98 Lots
+0:01:07.587141
13:31:06
|
|>>>
In MQL4 there will go, most often this :
double aVolumeInLOTs = NormalizeDouble( 0.01 * MathPow( 1.8, aLayerNUMBER - 1 ), 2 );
The groupings are groups of (here) 5 trades, each having the same size / volume,
again in the exponentiated progression of ( 0.01, 0.02, 0.03, 0.06, 0.10, 0.19, 0.34, 0.61, 1.10, 1.98, 3.57, 6.42, 11.56, 20.82, 37.48, 67.46, 121.43, 218.59, 393.46, ... )
The last piece of the puzzle is a reason, where to stop producing the 5-trades' groups ( why stopping right at the fourth group-of-5-s, sized 0.06 Lots each, and not proceeding anywhere further ).
That information was not present in the Question and remains thus an un-decidable for us, obviously, unless more pieces of information were added.
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Enivid · External communityPost link
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Author: Enivid
Original post: https://stackoverflow.com/a/65040381
License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/
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No, you don't need a cycle. You can attain your layer system like this:
double GroupExponent(int type)
{
double lot=0,exponent=1.8,initialLot=0.01;
int group = 5;
if(type==OP_SELL)
{
lot = NormalizeDouble(initialLot * MathPow(exponent, (TotalSell() - 1) / group), 2);
}
return lot;
}
int TotalSell()
{
int Sell=0;
for(int trade=OrdersTotal()-1; trade>=0; trade--)
{
if(!OrderSelect(trade,SELECT_BY_POS,MODE_TRADES))continue;
if(OrderSymbol()==Symbol() && OrderType()==OP_SELL))
Sell++;
}
return Sell;
}
Note: This will work as intended only if
Layer == 1
equals
TotalSell() == 1
. If
Layer == 1
equals
TotalSell() == 0
, then there is no need to subtract 1 from
TotalSell()
inside
MathPow()
.
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Quoted from Forex.com.bd-Editorial External answer — Stack Overflow Stack Exchange Author: user3666197 Source score (net votes, not local likes): 0 Original post: https://stackoverflow.com/a/65022346 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Q : "How to group a lot exponent in MQL4 / MT4?" Well, technically speaking, the Exponent = 1.8 is not an exponent per-se, but rather a scaling constant, that gets exponentiated by plain ordinals. See the calculation formula of the Lot-sizings, that match the Table above: | |>>> for aLayerNUMBER in range( 1, 11 ): ... aVolumeInLOTs = 0.01 * ( 1.8 ** ( aLayerNUMBER - 1 ) ) ... print "LAYER: {0: >2d} - {1: >5.2f} Lots".format( aLayerNUMBER, ... aVolumeInLOTs ... ) ... LAYER: 1 - 0.01 Lots LAYER: 2 - 0.02 Lots LAYER: 3 - 0.03 Lots LAYER: 4 - 0.06 Lots LAYER: 5 - 0.10 Lots LAYER: 6 - 0.19 Lots LAYER: 7 - 0.34 Lots LAYER: 8 - 0.61 Lots LAYER: 9 - 1.10 Lots LAYER: 10 - 1.98 Lots +0:01:07.587141 13:31:06 | |>>> In MQL4 there will go, most often this : double aVolumeInLOTs = NormalizeDouble( 0.01 * MathPow( 1.8, aLayerNUMBER - 1 ), 2 ); The groupings are groups of (here) 5 trades, each having the same size / volume, again in the exponentiated progression of ( 0.01, 0.02, 0.03, 0.06, 0.10, 0.19, 0.34, 0.61, 1.10, 1.98, 3.57, 6.42, 11.56, 20.82, 37.48, 67.46, 121.43, 218.59, 393.46, ... ) The last piece of the puzzle is a reason, where to stop producing the 5-trades' groups ( why stopping right at the fourth group-of-5-s, sized 0.06 Lots each, and not proceeding anywhere further ). That information was not present in the Question and remains thus an un-decidable for us, obviously, unless more pieces of information were added.
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