Dividing variables

**frangolfgt** · 06-15-2007, 04:27 PM

How do i divide variables in RR? / sign is taken, so what symbol do you use? I am making a fuel log (just a table)

¦ date ¦ litres ¦ p per litre ¦ milage ¦ cost ¦ mpg ¦

variables are called

datef namef pencef lastf nextf interf

Date, litres, p per litre, milage are filled in with the numosk, cost is worked out by multiplying litres by p per litre - this works fine

Code:

B,549,115,105,28,"BYVAR;VMPAGE;EVAL;VMNEXTF01;$VMNAMEF01$*$VMPENCEF01$<<EVAL;VMNEXTF01B;$VMNAMEF01B$*$VMPENCEF01B$",

I want to get mpg by dividing milage by litres and then dividing this by 4.5. If it was a / sign for divide it would be this (unless i made a mistake).

Code:

B,655,115,74,28,"BYVAR;VMPAGE;EVAL;VMINTERF01;$VMLASTF01$/$VMNAMEF01$/$4.5$<<EVAL;VMINTERF01B;$VMLASTF01B$/$VMPENCEF01B$/$4.5$",

Please help if you can.

Thank you

**Blue ZX3** · 06-16-2007, 12:42 AM

To make this much easier, Y don't you just use the Milage trip plugin??

This is what it does, and keeps a log, like the one your trying to do *re-inventing the wheel??

See here, I use it and it works great.

http://www.mp3car.com/vbulletin/rr-p...nsumption.html

**frangolfgt** · 06-16-2007, 06:30 AM

I know about that but cant test it it needs gps. I thought it would be simple to do it my way, I just need the divide symbol. Plus ive made the skin and it took ages.

**frangolfgt** · 06-24-2007, 11:18 PM

I guess no one know... or will tell me. Still hoping someone can help

**Sal R.** · 06-25-2007, 11:10 AM

Why can't you use "/" ? I did and it works fine.

Here's a line I use it in:

Code:

"EVALWINAMPVOL","EVAL;evalwinampvolvar;$TEMPigwinampvol$*255/100||SETVAR;evalwinampvolvar;$evalwinampvolvar$||SAVETOSKIN;evalwinampvolvar;$evalwinampvolvar$"

**frangolfgt** · 06-26-2007, 11:56 AM

For some reason it didnt work. Ill try again though.

**frangolfgt** · 06-29-2007, 10:15 PM

Ok found the problem... It now works. Thought the problem was because it couldnt use / as divide but it was something else entirely - some variables were named and labeled wrong and my maths was dodgy. LOL. Thanks for making me check again. If anyone wants the code, what it does and what i did with it just ask.

**frangolfgt** · 07-19-2007, 08:30 PM

Ok another question - is it possible to limit numbers to 2 dp only? I only need 2 decimal places in my output numbers, any more is pointless.

One gives a cash value for cost, (so obviously more than 2dp gives 10ths of pence - useless)
T
he other gives MPG which only needs 1dp really (it isnt accurate enough to use any more) plus who cares about being something like 0.05 of a MPG out.

Please help if you can.

Thanks.