metric-imperial rounding loses significant figures - Fuelly Forums
Go Back   Fuelly Forums > Fuelly Community Support > Fuelly Web Support and Community News
Search Today's Posts Mark Forums Read
Thread Tools Display Modes
Old 07-11-2011, 01:14 PM   #1
Junior Member
Join Date: Jul 2011
Posts: 1
Country: New Zealand
Location: Christchurch
metric-imperial rounding loses significant figures

I use metric and have noticed milli-litres appearing and disappearing in my fuel-ups, and meters going and coming.

i fuel-up by measured amounts accurate to 0.01 of a litre and measure distance to +/- 10 meters so significant figures are definitely being lost the rounding calculations somewhere.

are non-sensible or imperial units of measure the core datatype?

is anything being done to address this?

barf is offline   Reply With Quote
Old 07-11-2011, 02:22 PM   #2
Senior Member
Join Date: Jul 2008
Posts: 1,588
Country: United States
Location: Corvallis, OR
Behind the scenes we store everything as US units so we can easily switch the units for display across the site for all vehicles. In the process of that conversion you do lose some precision if you report in kilmeters or litres.

This structure is a core part of our system and it's not something we can change. If you need absolute precision Fuelly probably won't work well for you. It will give you a good sense of your fuel economy within .01 either way, but I can understand your frustration if you need something more precise.
pb is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 11:55 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.