Cut/ round digits after comma

Yves · 2018-12-10T21:14:43+00:00

Hi guys, i hope somebody can help me with the following issue. I wrote a little lot size calculator for my chart. The problem is i just want to get 2 digits after comma instead of 4. I tried a lot of different workarounds like “a=round(mashort*100)/100” and other calculations but nothing works for me. thanks in advance! // Risk/Trade risk = 150 // currval = Accountcurrency / Tradingcurrency -> Trade USDCAD -> EUR / CAD (*10 for standard Lot) Currval = 6.57 value = 0 atr = AverageTrueRange[5](close)*10000 size = 0 If atr > 100 then value = round(atr/100+0.5) else value = round(atr+0.5) endif // size =risk/(value*currval) size = round(risk/(value*currval)*100)/100 return size as "LOT"

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12/10/2018 at 10:14 PM #86713 quote
Yves
Participant

Junior
Hi guys, i hope somebody can help me with the following issue.

I wrote a little lot size calculator for my chart. The problem is i just want to get 2 digits after comma instead of 4. I tried a lot of different workarounds like “a=round(mashort*100)/100” and other calculations but nothing works for me.

thanks in advance!
```
// Risk/Trade
risk = 150
 
 
// currval = Accountcurrency / Tradingcurrency -> Trade USDCAD -> EUR / CAD (*10 for standard Lot)
Currval = 6.57
 
value = 0
atr = AverageTrueRange[5](close)*10000
size = 0
 
 
If atr > 100 then
value = round(atr/100+0.5)
else
value = round(atr+0.5)
endif
 
 
// size =risk/(value*currval)
size = round(risk/(value*currval)*100)/100
 
 
return size as "LOT"
```
Size-Calculator-1.jpg
12/10/2018 at 10:38 PM #86722 quote

robertogozzi
Moderator

Legend

PRT does not allow to set a custom number of digits, so the only available option is to round numbers like you did!

12/11/2018 at 12:03 AM #86731 quote
Vonasi
Moderator

Master
You could do something like this and return the value as an text indicator of its own:
```
defparam calculateonlastbars = 1

// Risk/Trade
risk = 150
 
 
// currval = Accountcurrency / Tradingcurrency -> Trade USDCAD -> EUR / CAD (*10 for standard Lot)
Currval = 6.57
 
value = 0
atr = AverageTrueRange[5](close)*10000
size = 0
 
 
If atr > 100 then
value = round(atr/100+0.5)
else
value = round(atr+0.5)
endif
 
 
// size =risk/(value*currval)
size = round(risk/(value*currval)*100)/100
 
drawtext("#size#",barindex,0) coloured(0,0,0)
 
return
```
Yves thanked this post
12/11/2018 at 12:31 PM #86820 quote

Yves
Participant

Junior

good idea, i think that works! thx!

01/08/2019 at 10:28 PM #88209 quote

Frankyboy
Participant

Average

Question: Is it necessary to have PorOrder round calculated lot sizes or are they automatically adjusted/rounded upon position entry with IG? Does anybody know?
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