What does the icon in the bottom right corner of the map view do?  It looks like a padlock or fingertip tilted 45 degrees. If I tap it it turns blue and then turns white again.

If you had been flying then switching to map view you would see a trace of the flight.  Pressing the icon will erase the trace from the map.

Correct, as hummingbird posted it's an eraser and erases the green flight path.

Thanks for clearing that up. I find that there's a lot going on in the app, so I spend quite a bit of time reviewing it offline. That way I can concentrate on flying!

patrickhaering Posted at 2016-6-15 11:35
Thanks for clearing that up. I find that there's a lot going on in the app, so I spend quite a bit o ...

And there's an app setting to enable/disable the flight trace.

Airspace Explor Posted at 2016-6-16 03:05
And there's an app setting to enable/disable the flight trace.

For me I leave it on, if you ever lose signal and instead of performing a RTH you cab just follow the green line home.

DJI-Ken Posted at 2016-6-15 13:10
For me I leave it on, if you ever lose signal and instead of performing a RTH you cab just follow  ...

... to avoid the obstacles that a straight line to home point would encounter.

Airspace Explor Posted at 2016-6-16 04:16
... to avoid the obstacles that a straight line to home point would encounter.

Not following what you are saying. My suggestion was to follow the green line home since you have no signal.
Either way if you follow the green line home or a RTH, both would hit an obstacle on the way home unless you have a P4.

DJI-Ken Posted at 2016-6-15 13:25
Not following what you are saying. My suggestion was to follow the green line home since you have  ...

If you've lost signal, how would you know if the aircraft is following the direct route home?

The straight line between aircraft and HP can't be removed, afaik.

If you didn't fly directly (LOS) to your target location in order to avoid obstacles, etc., then yes, it would be wise to re-trace your steps following your outbound flight route trace on the map to avoid the same obstacles on the return leg.

Airspace Explor Posted at 2016-6-16 04:45
If you've lost signal, how would you know if the aircraft is following the direct route (green lin ...

When you lose signal it's most likely going to be video but you still have great RC signal. The video takes so much more data and you'll lose that first (P3 Pro/Adv)

DJI-Ken Posted at 2016-6-15 13:48
When you lose signal it's most likely going to be video but you still have great RC signal. The vi ...

Isn't the straight line colored green and the route actually taken a shade of gray?

You're advising to fly home by retracing the route taken when outbound, right?

UPDATE: No, the straight line is orange and the actual route taken is green.

Airspace Explor Posted at 2016-6-16 04:54
Isn't the straight line colored green and the route actually taken a shade of gray?

You're advisi ...

if you are high up in the air you can can follow the straight line home. That's all I'm saying.

patrickhaering Posted at 2016-6-15 14:35
Thanks for clearing that up. I find that there's a lot going on in the app, so I spend quite a bit o ...

Great move. Practice in ATTI mode as well.

rodger Posted at 2016-6-16 19:30
Great move. Practice in ATTI mode as well.

Great advice, everyone should be totally confident flying in ATTI mode. The day will come when there's a GPS signal loss fro whatever reason and you need to know how to control it by yourself.
Many crashes can be easily avoided by learning ATTI.
My suggestion is to do it in a large field with strong winds, if you can be proficient with that then you'll be just fine.

DJI-Ken Posted at 2016-6-16 07:04
Great advice, everyone should be totally confident flying in ATTI mode. The day will come when the ...

I bought myself a little Blade nano when I got my P4 so I could practice on a drone that can take some punishment. You also have to maintain altitude with a bare bones quad, and that adds a little more complexity.

soundbyte58 Posted at 2016-6-16 23:08
I bought myself a little Blade nano when I got my P4 so I could practice on a drone that can take s ...

Perfect start, especially flying and being confident with something harder to fly than the Phantoms is good.
BUT, the DJI aircraft so much technology built into them that you also need to know the whole manual and know all about it's features and it's limitations.

Try a few other cheaper toys  to improve your proficiency
And then you will have better skills and knowledge to enjoy your
Awesome Dji  equipment

If you fly in the atti mode will the quad hold altitude when I let go of the sticks?

rprobinette@pin Posted at 2016-6-17 01:47
If you fly in the atti mode will the quad hold altitude when I let go of the sticks?

Yes it will.

rprobinette@pin Posted at 2016-6-16 08:47
If you fly in the atti mode will the quad hold altitude when I let go of the sticks?

Yup, but the slightest air movement, or if the gyro is off a tiny bit it'll drift. I was flying my P4 inside a 700 seat theatre last week and the air conditioning vents were blowing it around.

darrenphillips1 Posted at 2016-6-16 10:39
Try a few other cheaper toys  to improve your proficiency
And then you will have better skills and  ...

Obviously shot from down under.  

AG0N-Gary Posted at 2016-6-17 07:59
Obviously shot from down under.

Down under Adelaide South Australia

DJI-Ken Posted at 2016-6-16 04:25
Not following what you are saying. My suggestion was to follow the green line home since you have  ...

I find the green line to home helpful and reassuring. I find the white tracing line a distraction. Are you saying that if I turn off flight tracing in the app then I will also lose the green line to home?

skipilot1 Posted at 2016-6-17 10:42
I find the green line to home helpful and reassuring. I find the white tracing line a distraction. ...

if you disable "Show Flight Route" and that will make the white line flight path not show up.
You do still have the direct straight line from you to the aircraft.

DJI-Ken Posted at 2016-6-16 10:04
Great advice, everyone should be totally confident flying in ATTI mode. The day will come when the ...

Very true Ken and it is a ton of fun. I first started flying in ATTI in a 50 Acre open field. Now I do it in a small Orchard on my property. And yes, a windy day is a challenge. We take GPS and IMU for granted and it is really working overtime in a moderate wind. Pretty amazing.

rodger Posted at 2016-6-18 19:11
Very true Ken and it is a ton of fun. I first started flying in ATTI in a 50 Acre open field. Now  ...

Yes we do take all the incredible technology features for granted.

DJI-Ken Posted at 2016-6-17 11:14
if you disable "Show Flight Route" and that will make the white line flight path not show up.
You  ...

I disabled it and the green line back to home went away also.

skipilot1 Posted at 2016-6-18 23:47
I disabled it and the green line back to home went away also.

You are correct, on the Phantom3 Standard I still had a straight line, I just tested the Inspire and there was no line.

DJI-Ken Posted at 2016-6-18 11:39
Yes we do take all the incredible technology features for granted.

I was amazed with the capabilities of the Phantom starting with my very first one many years ago now. It would do so much for so few dollars. That still holds true to this day.

rodger Posted at 2016-6-19 19:10
I was amazed with the capabilities of the Phantom starting with my very first one many years ago n ...

Yes indeed for sure.
If you think about the technology in DJI aircraft especially the P4, is really is incredible.

DJI-Ken Posted at 2016-6-20 11:08
Yes indeed for sure.
If you think about the technology in DJI aircraft especially the P4, is reall ...

It really is Ken. Think back as little as 10 years. What we have today is fascinating.

rodger Posted at 2016-6-21 09:34
It really is Ken. Think back as little as 10 years. What we have today is fascinating.

Yes for sure indeed.

Thanks for that question and answer. I have searched high and low, watched numerous tutorials about DJI GO, searched the P3S manual, searched forums, and this is the only place I've seen the answer.

I suggest that DJI include this in the next version of the manual. It tells what the other icons do, but not this one.

Dave