I believe that glithery is not entering weight - "I am not into weighing myself daily." - but would like to see a "projected actual" sort of line based on calories eaten/burned (i.e. if the burn is ~1,000 per day because of entering food/activities) on top of the dark blue "goal line" without having to enter a weight.
That function doesn't exist as far as I know, though it's a neat idea.
Glithery - I'm not a mod, though if I had to guess I'd say that this probably doesn't happen because weight loss is never quite as specific as calories in/calories out (though that's the best guess there is if you're doing the math) and the chart is wanting your honest-to-goodness actual entered weight.
You can imagine that if it did a "projected weight loss" and people's weights didn't match up with the generated line, lots of people would be complaining about the software being stupid, malfunctioning, or just plain wrong. But when you're dealing with a biological system like your body, it's never an exact science, and FD doesn't want to guess wrong, I think
Female, 31 years old, 5'4 1/2" tall
Starting weight 1/4/11 = 215.2 lbs.
Weight 10/22/14 = 175.0 (net: -40.2)
Last mini-goal: 175 lbs. REACHED 10/22/14 --REWARD: New wallet
Current min-goal: 170 lbs.
Next large goal: 165 lbs. by 12/25/2014
Lowest weight: 156.7 lbs.
150.2 lbs. <--- Official "Healthy BMI" weight
Estimated final goal: 130-140 lbs.
"You don't have to change your life today. You only need to change your day today."