Added advanced stats to the individual fuel log pages - Page 2 - Fuel Economy, Hypermiling, EcoModding News and Forum

SVOboy · 08-11-2009, 11:17 PM

I'll check out the issue with the savings, but here's the actual thing the site is using:

Quote:

$saved_indy = round((($total_indy_gallons * ((100 + $epa)/100)) - $total_indy_gallons), 2);

cfg83 · 08-11-2009, 11:47 PM

SVOboy -

Ok. I don't think that equation is right. Here's what happens to me :

Code:

( $total_indy_gallons * ((100 + $epa)/100)) - $total_indy_gallons
=>
( $[827.08] * ((100 + $[27])/100)) - $[827.08]
=>
( $[827.08] * ((127/100)) - $[827.08]
=>
( $[827.08] * (1.27) - $[827.08]
=>
1050 - 827 
=>>>>>>>>>> 223

Now, assuming that "$total_indy_miles" exists as a variable *AND* $epa is not zero, I wrote this :

Code:

$saved_indy = 
round
( 
  (
   ( $total_indy_miles / $epa) - $total_indy_gallons
  ), 2
);

CarloSW2

SVOboy · 08-11-2009, 11:49 PM

Woops. I wasn't thinking! So many things broke on the site today...

I'll go in and fix tonight!

McTimson · 08-11-2009, 11:55 PM

Code:

[ (Total Miles / EPA Rating) - Gallons Used] * Avg cost per gallon

is what I was thinking

SVOboy · 08-12-2009, 12:12 AM

Tell me if the current results look good to ya'll

Matt Herring · 08-12-2009, 01:29 AM

Everything looks tight on the fuel logs...the stats are great...nice work bro!

My $ saved is a little disappointing though. I thought 13 mpg over EPA would save me more than $66. But, I've only spent $233+ in gas over those 4+ months so I guess it makes sense. Although over the course of a year I might have a tough time persuading a non-hypermiler Prius driver to follow my lead if I'm only saving a couple hundred bucks a year by getting 60 mpg vs. getting their 46 mpg...just a thought.

Compared to my former 4runner over the past 4+ months I have saved more than $500 on gas though so the switch to the Prius feels alot better thinking that way.

SVOboy · 08-12-2009, 01:34 AM

We could probably have a calculator for former vehicles, as well

More on the to do list!

Matt Herring · 08-12-2009, 01:58 AM

Maybe some type of worksheet similar to the one that is on the site to calculate cd would work where you could use your current vehicle stats to compare them to "x" car. Thinking something simple where you could enter a random combined epa in a box, miles driven, cost per gallon, etc. and it would formulate how much gallons, fuel, etc. you can save/have saved vs. the "x" car.

This would be a good tool for the prospective car buyer also to figure out how much money/fuel they would save if they were driving a 20, 30, 40, 50 mpg vehicle vs. their current car. Might be a good calculator to bring non-ecomodders to the site as well if they picked it up on a google search. While calculating their possible mpg in the worksheet they might join ecomodder too!

All of these things you are working on are great SVO! A few of the items (overall ecomodder garage stats, top 10 lists, etc.) might be good to add as links on the front page of the site for easy access. I find myself going to my subscriptions page or the garage to find the threads that have those links. Would be quick if I could go to the homepage and find all of the links for this great info...more work...sorry!

SVOboy · 08-12-2009, 02:12 AM

Yeah, I've been lax on linking since it's all beta right now. I'll try to get on it soon, but right now I'm putting my plans on hold to fix the mysql error issue

cfg83 · 08-12-2009, 03:02 AM

SVOboy -

Great Job!

CarloSW2