suggestion: running averages of data? - Fuelly Forums

Click here to see important news regarding the aCar App

Reply
 
Thread Tools Display Modes
 
Old 10-21-2008, 11:46 PM   #1
Junior Member
 
Join Date: Aug 2008
Posts: 2
Country: United States
suggestion: running averages of data?

Just connecting the dots of MPG data is a bit misleading.

It would be nice if there was some running average curve instead of a connect the dot curve. Post a smooth curve, like posting a point at each fill up containing the average of the last 3 or 5 fill ups. That will smooth out variations on each fill due to difference in tank fill level, or mileage readings. Look at Loess curves for example.

It would also be nice if the X axis of the plot was the date, not the fill up number. Then you'd see gas usage over time.

While I'm at it. A plot of mileage/$ or gas price over time would be a neat add also.
__________________

roadent is offline   Reply With Quote
Old 10-21-2008, 11:56 PM   #2
Junior Member
 
Join Date: Oct 2008
Posts: 6
Country: United States
Location: Troy, NH
good idea!

another way of implementing it would be a trend line with shaded areas that show statistical confidence:
__________________

veryhumid is offline   Reply With Quote
Old 10-21-2008, 11:58 PM   #3
Junior Member
 
Join Date: Oct 2008
Posts: 6
Country: United States
Location: Troy, NH
Link button did not work, I will just post it as text:

http://folding.extremeoverclocking.c...ry.php?s=&t=32
veryhumid is offline   Reply With Quote
Old 10-22-2008, 12:17 AM   #4
Senior Member
 
Join Date: Jul 2008
Posts: 260
Country: United States
Location: McMinnville, OR
1. Yeah, a running average would be nice. We have some pretty limited graphing toolkits currently, so I'll have to look at what is possible at the moment.

2. We don't do the date since people on roadtrips can have more than one fill up on a single day (it happened often and was reported as a bug), so we had to instead change it to every fuel up gets a spot on the graph.

3. We're hesitant to include price in too many metrics because it's not something you have tons of control over. We're trying to highlight the things you can change with behavior -- using a lighter foot will save you money and you'll get farther, but with the fluctuations in fuel prices, we don't want to highlight too many things based on price because the price is almost completely out of driver's control.

If you saved $50 this month, it's not because you changed driving habits for the better, it's because gas is 40 cents less per gallon, etc. and there's no way to predict that going forward.
mathowie is offline   Reply With Quote
Old 10-27-2008, 10:58 AM   #5
Junior Member
 
Join Date: Aug 2008
Posts: 2
Country: United States
For #2, I think that you can plot this on a scatter plot instead of x-y plot to allow multiple fills on the same day. You could have an option to show either way also.
roadent is offline   Reply With Quote
Reply

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


» Fuelly Android Apps
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 08:50 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.