math.round

[Blinker.]

Hello ,

i've got no idea why that's not working , it shows on the column "R" the value '4,5012304213' with so much numbers .

i'm using that :

  
setElementData(v,"R",math.round((select[1].r),2) 
  
  

i've tried also tonumber and still not working and no errors in debug ,

thanks in advance.

[Gallardo9944]

math.round doesn't seem to exist in original Lua. Use this function:

function math.round(val) 
  return math.ceil(val-0.5) 
end 

You can round this to 2 last diggits like this:

local num = math.round(val*100)/100 

Or just use this function:

function math.round(val,todiggit) 
  local todiggit = todiggit or 0 
  return math.ceil((val-0.5)*(10^todiggit))/(10^todiggit) 
end 

Untested though

Edited March 4, 2015 by Guest

[Blinker.]

i've added it already

  
function math.round(number, decimals, method) 
    decimals = decimals or 0 
    local factor = 10 ^ decimals 
    if (method == "ceil" or method == "floor") then return math[method](number * factor) / factor 
    else return tonumber(("%."..decimals.."f"):format(number)) end 
end 
  

[Mr.unpredictable.]

....

Edited March 6, 2015 by Guest

[tosfera]

math.random 

That's a random number... not rounding a number to an integer.

[Gallardo9944]

math.random 

That was unpredictable... lel.

[Blinker.]

Well so what's the problem here?

[Dealman]

Is it a number or a string? Seeing as how it doesn't work and your float value has a comma instead of a period - I'll go ahead and assume it's a string.

I assume that function doesn't work with strings.

[Blinker.]

No its a number , i gave just an example , it has a period not a comma on scoreboard

[xXMADEXx]

Put this in your code and post what it outputs:

outputChatBox ( "Type: " .. type ( select[1].r ), root ); 
 outputChatBox ( "Value: " .. tostring ( select[1].r ), root ); 

And, if debugscript says any errors, please post those too.

[Dealman]

Well since you're not giving us enough information, go ahead and try this;

setElementData(v, "R", tostring(math.round(tonumber(select[1].r)), 2)) 

[Blinker.]

Hello ,

sorry i wasn't home , i was on my phone.

@ xXMADEXx i did what u said , i got

Type: number

Value: 0.42857098579407

and no errors in debug

@Dealman

i got number 0 and number 1 and number 2 in scoreboard without period when my ratio increases

[Dealman]

Since it is a number, then this should work just fine;

setElementData(v, "R", tostring(math.round(select[1].r, 2))) 

That should show up as 0.42.

[Blinker.]

ooo thank you a lot its working !

[Mr.unpredictable.]

What is math.round?

never read about that in lua.

[JR10]

@unpredictable A useful function. https://wiki.multitheftauto.com/wiki/Math.round

[Mr.unpredictable.]

@unpredictable A useful function. https://wiki.multitheftauto.com/wiki/Math.round

thanks