Mission Across Wales 2: Line Analysis + Pack List
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- เผยแพร่เมื่อ 21 ต.ค. 2024
- As promised, the line analysis and pack list video for the Misson Across Wales Attempt 2.
For all the unused / bonus footage, sign up to Patreon: / geowizard
Rewatch the series here: • Mission Across Wales (...
Subscribe for more adventures: / @geowizard
Lesson learned from Mission 1: Bring gloves
Lesson learned from Mission 2: Cut toenails
It's also wearing footwear that fits too snug and has a narrow toe box.
and bring some medical tape just in case you need to fix your nail in place.
From mission 3 don’t go into the bog
Lesson learned from Attempt 3: Bring a satellite phone.
he has explained the gloves thing a lot, actually I have found that going through brambles sometimes gloves just give you a false sense of security because thorns are so sharp they can pierce through them
what if you tried walking in the biggest possible perfect circle
That's basically what they did. Any straight line on Earth is a great circle.
Daniel Bamberger you’re a cretin
well i mean so that you end up in the same place, but i guess you are right that walking around a latitude line would count as a circle, although i highly doubt thats possible considering all the ocean
@@Spu7Nix Yes, getting across the ocean would be a challenge. The longest you can walk in a circle, i.e. a straight line, without touching the ocean is from Greenville, Liberia to Wenling, China, a distance of about 13,500 km. To complete the circle you'd have to cross both the Pacific and the Atlantic though...
geospatialmedia.s3.amazonaws.com/wp-content/uploads/2017/08/straight-line-projected.jpg
@@Spu7Nix Here it is, 16146 km in length: i.imgur.com/W5rF7VG.png
If you time it right then the rivers in the Arctic are frozen over, and the largest body of water that you have to cross is the Caspian Sea, over a distance of about 200 km. That is just below the record for the longest distance any human has ever swum in one go.
You were actually due to cross just by the house I lived in when I was a kid. Like half an hour more or so and you would have been there :(
Great series anyway though
Man, that would have been awesome! Maybe next time
That’s an awesome coincidence
30:05 Yeah, scratch away. Not like you're on camera to the whole internet.
Pinch and roll baby
30:53 He's going at it again!
ROFL I was just thinking the same thing. Then the first comment I see rofl.
@MOBsta Imaging no
This is what we're here for 😂
Apply Geoguesser theorem: zoom out until it doesn't look so bad
Actually not too bad advice for life.
Governments: Quick, quick, write that down
If you're always high af, you can't see your problems down on earth.
Stay in drugs and smoke school kids
TRICLO well said, well said
Tom's probably not going to see this comment but it would definitely clarify some of the things in his mind.
"Why is the GPS line consistently North of the straight line we were following?"
Now I'm not exactly sure why they were consistently North, I'm guessing it was just the GPS not being super high quality and therefore, accurate, and not human error (I trust that from what they were seeing they were dead on the line most of the time when it looks like they were consistently 5-10m off).
Another thing (which obviously isn't on his mind, otherwise he would have voiced it) is that if the GPS was *consistently* off by 5-10 meters North, then that 48 metre deviation (and any other deviation really, as seen particularly around the 12:00 minute mark with the road) to the South would have actually been 50+...
And if I remember correctly, a 50+ metre deviation exceeds gold standard and is instead, silver. Womp womp.
Twas a great effort though, I am thoroughly enjoying the series though! Can't wait for the next straight line mission across wales!
Keep it up Tom, you're doing great 😆
Here is a valid excuse to tell famers/land owners: Tell them you are retrieving a high altitude weather balloon transmitter that has fallen in the balloon flight path. People go out and retrieve them all the time like a Radiosonde transmitter and have to cross private lands and farm fields. Especially if your using a GPS tracker. The only way to spot it is to follow the exact flight path.
Amazing
Genius, I'm going to remember that one.
Hmm idk. Farmers are gonna say: " just go through that gate 50 m away"
It's still not a valid excuse though. It doesn't change anything. The farmers can still say "just go around the gate there, you'll be back on the line right after that ". It doesn't solve the problem at all. Best to just be honest, problem is he never really explained it well or only gave half an explanation
@@andyb2830 See I never understood why he never just rang ahead and said 'yo, I'm doing this mission across Wales, on x date would I be able to cross your land please?' and then he doesn't need to shit himself every time there's a dude on a bike xD
I've made my Straight line mission in Slovakia just a week ago (available as IG story). 7km turned to be like 4:40 to finish. Old woods were great, glade with brambles not so much, but overall it made me feel so proud (even on these tiny 7km).
Tom, just keep attempting to cross whole country. You were first to attempt, be the fist to complete.
Others, be encouraged to do your own right where you are, mostly safely.
I live in Canada, wish me luck
Very nice. He is an inspiration
You should upload it as a vid on youtube.
Where did you go and from where?
@@archdukefranzferdinand567 d'Este in Canada ... you're lucky man already
Found your IG, good stories! What was your max deviation? Looked like a lot, was that due to the water-protection area?
I planned out my own mission - across Wallachia from Frenštát pod Radhoštěm to border with slovakia near Starý Hrozenkov, but it's 65km, so I might start with something shorter.
I'd say your diet is inadequate for the amount of energy you are expending. Maybe talk to a fellow TH-cam nutritionist in the UK to get an ideal meal plan for future adventures.
True, but it's only for a week. A good fast is recommended once in a while.
@@LearnLightAnimations It's not recommended, although it's quite reassuring to think so
@@LearnLightAnimations, there's a time to fast, a week long cross country trek is not that time.
It’s actually mad how good you are at commentary
It seems like the gps thinks you're a meter or two north of where you are the entire time. Almost the whole path is just north of the line and at points like 11:00 you follow the road and it still has you a few meters north through the yard.
Finally! I've scrolled so far looking for this comment...
Yes you are correct, and it sucks Tom's probably not going to see this comment as it would definitely clarify some of the things in his mind.
The main one obviously being "Why is the GPS line consistently north of the straight line we were following?"
Now I'm not exactly sure why they were consistently North, I'm guessing it was just the GPS not being super high quality and therefore, accurate, and not human error (I trust that from what they were seeing they were dead on the line most of the time when it looks like they were consistently 5-10m off.
Another thing (which obviously isn't on his mind, otherwise he would have voiced it) is that if the GPS was *consistently* off by 5-10 meters North, then that 48 metre deviation to the South would have actually been 50+...
And if I remember correctly, a 50+ metre deviation exceeds gold standard and is instead, silver. Womp womp.
Twas a great effort though, I am thoroughly enjoying the series though! Can't wait for the next straight line mission across wales!
Keep it up Tom, you're doing great 😆
It is possible that the line (or route trace) was shifted on purpose in order to maintain a gold run, which is, of course, perfectly fine, since the mission requires any straight line (within reason) and not the exact one which was planned.
On another note, If some maximum distance restrictions regarding the mean value of the absolute deviation from the line were to be implemented, on top of the already existing maximum deviation restrictions, maximum adhering to the line would be forced, with deviation possible in only a few critical instances. This would also, however, prevent later adjustments to the line to save platinum/gold etc, because most of the route would then be thrown off the line. It would certainly be much harder, possibly too hard, depending on the limits.
@@soryusedtoblameneithernowb3714 It's possible that the line was shifted a bit, but I remember one of my GPS (GPS's?) had a similar error for a few days (weeks? It was years ago, I don't exactly remember) where it would show me a few meters off of my original postion (as I could clearly see the road and the sidewalk on the map). I was on the road, had perfect signal, but the GPS insisted that I was a few meters besides the road. It sorted itself out eventually, and I don't know what caused the error. Propably some overcorrection going on? Back at that time GPS was only 3 meters accurate (and my shown position was within that margin), I don't know if that's still true.
Stellular Nebulla Maybe Tom is cheating a bit, shifted the goal path south a bit to make his 49 m deviation within bounds.
I doubt tom had anything to do with it, the first mission had a similar line deviation
I haven't been this addicted to a series since Breaking Bad. Can't wait for the next mission!
When it’s much safer out, walk across our country
At least provide him with an armed escort, Kim.
Jokes on you, your not the real Kim Jong-un
Death B. Grapes woooosh
CKA a) It's r/whoosh
b) I'm pretty sure it's a person in the New York area lol so jokes on you
@@deathbygrapes5 it's actually r/woooosh and r/ihavereddit
Do you forget how to even turn left and right for a while after doing a straight line mission? Legend has it you have been walking in a straight line ever since.
@Albert Herndon Maybe he gave himself a permanent condition and will never be able to turn corners ever again.
Everyone should go to Toms Patreon and send him some money for his life-changing treatment to help him turn corners again.
Geo, next time you do one of these challenges put two lines 25m apart then travel inside of the 25m
This is maybe a much easier/more clear way to do it haha.
This sort of thing would make great SAS training, mostly staying away from roads and pathways, going through dense woodland and brush. I salute your efforts young man!
Eh. It is really nothing.
Here in germany we exercise a lot, esp. in sniper school, so walking 10-25km is barely anything.
You just do it.
The SPECIAL special forces require much more.
@@jasonvorhees1795 But have you crossed an entire country without deviating more than 48 metres from the gps line? Or have you crossed a German state doing that?
@@thisguy976 no, because it isn't relevant for the military.
@@jasonvorhees1795, SAS entry tests actually involve a trek across Wales with an objective and limited equipment. The Brecon Beacons, to be specific.
I recommend trying somewhere in Finland. The everyman's right here allows you to pretty much do it anywhere
apart from that one secret military base that will kidnap him and perform experiments on him!
@@Jamal_Tyrone They will not perform any experiments, they will just do a few harmless tests and throw the rest of him in a lake
finland, sweden norway, there are so few people that you basically have to search for routes that actually go through villages or near houses ;)
@@eberbacher007 That could be a problem if you become ill or get injured, or even run out of food.
@@eberbacher007 After all as he said at the start of the first mission, it needs to be the perfect balance between wilderness abd civilisation.
Come and do a straight line in the Netherlands would love to see you dealing with angry Dutch farmers
He will be fine, they can't run very fast in their wooden shoes.
Netherlands should be really easy, just cross the south near Sittard, its only like 5 miles! easiest mission ever!
@@raafmaat By that logic, you could just go the corner of every country and cross there. You could go to the very tip of the Kamchatka peninsula and cross Russia in 50 meters
Archduke Franz Ferdinand But you're not across Russia. You'd still have to cross the Sea of Okhotsk and through the far east
well, crossing netherlands near sittard is NOT just a little edge of the country.... theres still over 20 miles of land south of there!
but yeah, by your rules there are barely any countries you could do..... just luxembourg pretty much (and micro nations like andorra)
So, how are the toenails?
e̵̱̲͔̅̊̽̐̍̃̏́̽̆̂͑̋́̃͘͠ ̶̙͕̯̹̱̯̝̞̯̠̗͇̇̌͐̆̓̇͆̏͌͗̿̈̈́̒͜͝ͅḁ̸̢̛̦̭̲̲͓̱̯̗͎̿̀̊̀͜ ̶̛̘͕͍̒̉t̵̰̹͒́ ̶̳̘̖̗̬̹̃̌̈́͂̌̇͑͝e̴͉̺͇̝͕̩̭̮͎̟̲̿͗͗̐̚͠͝ ̸̼̙̩̫̯͔̙̩̯́̃̍̌͛̅̌̉̅̍̈͂̈̕͜͜ṇ̸̛̆͑̏̈́͗̓͑̇̂̇̈́͝
@@NuclearTopSpot well that's different...
They are out there in wales, on the line, somewhere. Still walking.
@@RMJ1984 lmao💀
You should try 'coasteering' around Wales in summer. Much better scenery on the coast, and some world class beaches to camp on/near.
Is this line one that's straight on a Mercator projection (i.e. constant compass bearing) or is it a great arc?
I know it's a year late, but just in case you (or anyone else reading this) never watched his Norway line review videos, I will explain.
He picks the line in google earth, which is obviously projected on to a globe. When he exports his google earth line into his GPS, the GPS accounts for the Earth's curvature, basically giving him the exact line he set up on google earth.
However, because Tom believed that google earth couldn't import his GPS data, he would re-draw the line that he follows in a new program: the Garmin program that he is using in this videos. Unfortunately, the Garmin program uses a Mercator projection, so the purple line we see in the video is NOT THE REAL LINE. This is why, as many have pointed out, that he and Greg seem to be constantly to the right of the line, especially in the middle of the journey where the distortion is highest.
What Tom realizes in his final video in the Norway playlist is that he can export the walking data from his GPS directly to google earth, meaning that the distortion is eliminated! Thus, you'll see that all of the parts where he and Greg seems to be slightly off are actually dead on-line.
Unfortunately, this does mean that when Greg and Tom were escorted away from that couple's house, the deviation was more like 60 meters, and not 48.
Have you considered moving the line slightly after the fact, to get it onto the average of what you actually ended up doing? That way it should hopefully help minimize the deviations. I mean, the mission was to walk in a straight line, not to specifically walk on _that_ straight line, right?
Literally passed where you crossed the A44 today. No idea how you didn't fall on your faces going down that steep embankment!
I think the GPS dots were recorded consistently 2-3 meters off to the north. That's why you're always going straight but a bit on top of the line. That's also why it looks like you went through Mr. Perkin's garden. So it was actually better than what you see!
Which also means that the part where the GPS dots went 48 metres to the south, round the house, might actually have been 50-51 metres off. Oops!
Suggestion for an (absolutely mega) route for New Zealand
from: 39 23 15 S 173 46 51 E
to: 39 20 52 S 176 54 46 E
Imagine if he did a straight line across Liechtenstein or Singapore. Loved your Line Across Wales, you are such a mad lad
Liechtenstein would be pretty tough. A lot of houses in the North to South flat area and in the West to East route the mountains would be too steep.
Singapore would require some serious parkour
Singapore is hard because of the builings and the HUGE AND THICK forests.i lived there
Hey, where do you want to cross Norway? North of Trondheim, I suppose? I live in Steinkjer and might be able to help you out
Next time Greg is sweating out his salts he must add sport drink powder in his water, and not just water. You should also do it sometimes.
Great series, all of them. I've really enjoyed watching both trips across Wales as well as Norway. If you ever think about doing one in the states, I'd recommend a North- South line across the Upper Peninsula of Michigan. Also interesting to see what you packed and nice bass you've got there. I prefer Fenders myself, though I'm more of a P-bass guy. Cheers!
Hi Tom, me and couple of mates are interested in doing something like the mission across Wales cus we like the sound of the adventure. I don't think we will do it as strict as you and Greg were, maybe aim for a bronze or silver run, but is there an email or something I can contact you with to talk to you about it?
You could try contacting him during a stream, maybe he will see it there, just an idea.
you can find his e-mail in the contact screen of his channel page. He always replies too, ive contacted him before to give him some suggestions.
I love the idea of like, in a year, it's just normal to see guys stompin through your garden. Like... Oh look another straight line walker, off you go
@@silas__3994 yh I was just thinking that, gotta get those stream notifications on 😂
@@andaption5912 would you be recording?
Congratulations. Even with the trek unfinished, this is an impressive feat.
Last time I was this early Edward the First hadn’t yet conquered Wales
I love how honest you are when going through your pack items. You should try get some Amazon Affliate links sorted for some of your items, Food, go pro, SD cards etc.
We need a season 3 where you complete the mission. I really enjoyed watching the missions.
Maybe you can get a Galileo sat nav system in the future. Much more positional accuracy and supposedly better signal once the full constellation of satellites are in orbit.
With you on the "At the camp, you can stray a little bit but don't take the piss, still counts". That's also how Ross Edgeley became the first person to swim around the entirety of Great Britain - the boat went back to start at the GPS point they finished at each day.
You should try to do one even a short straight line mission with just a compass and a map. You could save the route with gps but you would have to navigate without one.
Across anglesey maybe
Considering how unreliable GPS is in the forest and whatnot he should definitely use a compass even to navigate forests and such. Helps as a backup, too.
The thing with a compass is it just shows that your are walking in the direction not the specific line. You could be walking 100 meters to the left of the line and the compass would only show that you are walking parallel to the line.
@@jacobhinger5039 And that is why you have the map and why it is a challenge.
It's definitely fair to deviate a bit when you're camping. the point is to walk the line, not to sleep, #2, and collect firewood on it. You guys did a bang up job, and both have balls of steel. Get in!
Way more accurate than last line! Cutting it short was the right call but I'm rooting for you to go all the way one day! Not gonna lie, you channel really inspires me to try something like this maybe on a city/town level first (after COVID settles down a bit more).
Last summer this series was my happy place and this year it was too!!! Can't wait till the next series !! Honesty amazing stuff bro!!
Hey Tom, I absolutely love your content and i'll hope you'll do more projects like the straight line mission or the "how not to travel europe" series. Keep it up!
Phenomenal series sir. What a great way to celebrate your friendship!
I know nothing about that geowizard game, but hell yeah I am a big fan of this kind adventures, your story telling skills are utterly brilliant! I really like your no nonsense approach...
I am extremely motivated give Luxembourg a try in the fall -and if I "succeed" The Netherlands as as well, maybe even winter, since winter is the new fall nowadays- Have already a few routes to be explored after the first mission!!! Let me know if I need to test some sections or anything else (although there are some VERY VERY steep and dangerous sections that you really need to avoid!!!)
INPUT from the standpoint of an ultra runner, - with absolutely no experience in Wales ;)- for mission 3: -this is always very personal, so see it as a free dinner where you can take anything you want and leave the rest for the pigs ;) -
MOST IMPORTANT: THE FEET! short version, Test {toe socks, pedicure, bigger shoes, foot care products, waterproof socks,...}
e.g. you can go to a pedicure (I know it might feel weird, but believe me, just do it!) 3 weeks before your adventure, not only for the toe nails, but also for the dead skin -callus?- removal. The softer your skin, the less water it can absorb and never will you get things like treched feet. Later on just take care of your feet (creams,... as if you have some kind of funny feet fetisj :D specific tips, you can always ask me.
toe nails and the blood blisters underneeth them are really hard to handle (but mentally can keep your mind focussed on the job and keep other fysical and mental pains out of your mind, but without this pain, everything is always easier!!!) suggestion buy toe socks (injinji or the aliexpress ones, no difference,... and on top of this sock another merino type sock for heat control), the longer the adventure, the bigger your shoes (swelling,...) The sealskinz you use, smart choice!
> never use compeed, but tape your feet with fysio tape against blisters and use vaseline for small friction problems!!!
IDEA: Travel faster.
> travel lightweight (I think you can get a brand like montane sponsor you really lightweight, frictionless, warm clothing) Look at clothing of runners who do the spine race, or legends trail,...
> use merino stuff as base layer for heat control, any weather condition, no disgusting smell.
> for sleeping: try to use a hammock and tarp in stead?
> for food: try to maximize your hydration, put carbs, salts and electrolites in your drinks. -> you can do it yourself, with e.g. O.R.S. salts and sugars etc. or you can just buy something like tailwind nutrition (even with caffeïne if you want to go pro)
[i know you are not going to do this but still] > travel later or even sometimes go for the full night shift, it's amazing for yourself (your energy will be really high if the sun comes up again) or do powernaps when you really feel that you need it (in a lightweight emergency shelter, bivvy,...) earlier through populated areas, with a good headlamp it will be another interesting thing to see that on film for us as well!!!
> use foldable walking sticks
> try trailrunning/walking shoes instead of walking boots.
> have a support crew around if you want (and use a live tracking, so that this crew can find you anywhere,... garmin livetracking is already sufficient, but I can get you better stuff sponsored if you want to)
> extra idea for the cold mornings: rainpants warm you up very fast.
BETTER IDEA: forget everything written above and do your thing! It will be amazing to watch, that's for sure.
Many happy adventures, good luck!
When it shows the line walking along the road near Perkins' garden, the line is further north, and can be seen going through the garden. You were mostly to the north as well, and when you make errors to the north, it is revealed to be farther north than expected, whereas the opposite is usually true for the south, with a few exceptions. I think that the GPS shows your path as slightly further north than it actually was.
Yeah it's time for 👏line👏review👏
Maybe the score could be based off the total deviation. Makes some unavoidable scenarios less punishing and disincentivizes the behavior where you take shortcuts because you've already strayed off the line by 25 meters for example.
I wonder if someone could make a program that could analyse maps to create the most efficient straight line route that avoids homes, hazards, etc.
2 years later….
I hope you and Greg attempt something like this again. You make a great duo.
Adventures like their Europe trip are more likely as this adventure was more stressful on Greg's condition
Seems to me that's it's possible that the line on the map and the line you follow on the device are slightly misaligned to each other. As you note in the video where you point out you knew you were on the road when the GPS says you were not. If you notice it says you're almost always to the right of the GPS line, but I would say you were more accurate than the line suggests.
Is there maybe a more beefy gps unit you could acquire? Surely there's some industrial level ones that work better under tree cover and don't glitch out when you stop.
You know what they say, three times a charm.
Looking forward to your next straight-line endeavour!
Icebreaker and Darn Tough socks are incredible. Nice and warm even when they’re wet and they have an unconditional lifetime guarantee. Meaning if you ever put a hole in them you can mail them in an get a new pair. Not sure about availability in the UK, but definitely worth checking out.
Norway is a good idea. Will be interesting to see what path you take, as Norway is quite thin but mountainous further up north. I would recommend Finland too. The distance would likely be much greater. You would not have that many hills, much fewer than in Wales, and the farmers would be replaced by free range reindeer and roaming packs of feral drunks. Your main problem would be lakes and rivers, and you would likely have to increase your acceptable diversions. But it would be a true challenge.
Winter sports enthusiast here! Always wear synthetic fabrics to stay warm even when they get wet. (Wool, nylon, rayon, polyester etc) You'll find you don't need to wear so many layers! NEVER ever, ever wear any type cotton. Happy travels :)
Will you do more of straight line missions?
hell yeah he will!
did you watch his last video?
He mentioned he was going to try Scotland next
@@Azuressunset norway I think
@@praneet6230 That too but i think he wanted to do it in the summer and travel restrictions probably ruined the idea
It's strange how you almost always seem to be to the right of the line, even when it's very easy going. That can't be coincidence. Probably something screwy going on with the tech.
As the biggest error they got was 48m to the left , he probably just moved the line to the left after the fact to stay within the 50m margin. The original line beeing 10 or so meters to the right would explaing your point.
It's actually not necessarily the signal that's the problem. GPS systems use filters to produce a more or less straight line and estimate speed, etc. When you stop, the noise in the signal is then interpreted as movement instead of getting filtered out by relative motion. This is why it gets worse when you go slower. The system is tuned to filter out noise around an assumed walking speed, I reckon.
I enjoyed it a lot again! Hope we can see another one soon! When possible of course...
Like the first attempt, its almost as if the true line is a metre or two above what its showing here. Maybe do some test runs to check before the next big challenge? Great attempt in any case so well done mate.
Tom! I have a suggestion. A way to evaluate the success of a line (how straight it is) you can use a root-means-square function. AKA calculate the r-value of the line. This is used in math to determine how "close" on curve is to another curve. It basically evaluates the difference between every point on the path you took minus the straight path. It gives you an average deviation which could be useful here. Let me know if you need help with this!
I wrote a ski app over a decade ago that took GPS and mapped it onto a printable map of the French alps. People hired out little GPS devices then picked up a map a day later. The main issue was people resting or worse going inside for a snack for an hour, GPS relies quite heavily on movement and extrapolation, the actual data is quite crude and once you stop moving it goes all over the place exactly like your recording. The only solution I had at the time was manual editing, select the line before the stop, select it after and delete everything in between.
I'm proud of both you and Greg
Great journey! Glad I saw you on a show on Rocket Beans.
I dont know what it is but i find your voice so damn soothing... It doesnt matter what you say but it instantly has a calming effect on me :D And apart from that, i love that straight line mission stuff!
Is there any guess for why you tended to always be slightly to the north of the line? A difference in what was shown on the GPS vs what was recorded?
Probably a inherent bias in the GPS device.
Could be subconscious, most people are slightly favored to the part of their body that their dominant hand is on. For example if lost and presented with a split path, most people will go right.
Idk if this actually has anything to do with him going right of the line, could very well be completely unrelated and instead be something with the gps as you said.
@@silas__3994 That is a very interesting idea. or even just holding it in the right hand but bringing it in front of the body to read. Only a few centimeters but maybe their bodies block a bit of signal from the one direction giving an estimate further to the right. I think I need to learn more about GPS technology haha
I strongly recommend a therma-rest sleeping pad. Pricey, but they're super light, comfy and last forever. I've slept on frozen ground in -10 with mine and been toasty all night.
You should try army MREs, more calories than the adventure food, and they're meant for the amount of exercise you do. British mre if you want to stay true to your land or other countries can be an interesting experience (french ones are very decent)
Love your missions and don't give a shit if you straddle a few meters off. The most important is you two having fun and entertaining us.
With the house you skirted around with the homeowner- is it 'within the rules' to ask them to carry the GPS across their garden and pass it back over the hedge to you?
3rd time is the charm. Can't wait for you do it again.
hello, is this the sine curve channel? i'm looking for a sine curve mission across wales. just kidding, good effort lads!
>GPS system
>Says radius, measures diameter
3:45
Nothing to do with signal; the GPS system has an intentional wobble built into it.
If you use a pair of GPS units, with the second unit in a fixed position you can account for the wobble and make your primary location significantly more accurate.
Great series of videos mate. Certainly wasn't a failure, just incomplete. Hope you contacted the BP garage to tell them you wouldn't make it, they probably sent out a search party looking for a couple of trekkers bodies.
Just keep doing different lines across Wales. Its only a matter of time before you have to pass theough the garden of a subscriber! They can come out and make you a massive picnic!
You did a great job. I hope to see more line attempts. It might help to bring printouts of the line so parts where you went through the forest instead of the field you could avoid. Also I think you need to just bring more food in case you are held up and so you can eat more as you need it when you are hiking all day. You can pack some more hearty food like canned chili/stew or something at the drop locations that you could eat there. Then you can leave your trip garbage and the cans and pickup when you are done.
Some drone shots would be epic in this journey
nah i prefer the gritty style of it just being filmed on a go pro.
i agree drone shots would be awesome to see. you could still have the gritty handheld gopro as well with cinematic shots mixed in
That would add too much volume to carry around. Not to mention how careful you'd have to be when throwing the bag over hedges or bumping it into a rock or something. No way he's add drone weight and volume to an already heavy bag.
@@jojacvonkekebau3686 Why would he even carry the drone? It flies. Duh.
Looking into GeoWizars’s eyes threatens me for some reason , he means some welsh business !😂
To address some points regarding the gps system.
Your gps tracker inherently uses gps coordinates to localize itself. But it also tracks the noisy (probably) utm transformed coordinates to get a map representation (and therefore your self drawn goal line) and filters movements made. Because you move so slow, you little tracker will statistically "mean" out noise, which leads to an offset error when walking. This offset slowly "creeps" up without you guys noticing while you walk and the filter needs a while (relative to your acceleration, which is not that much on foot) to showcase the offset to a point where you notice an offset from the goal line and stray into the other direction.
This leads to a sine wave pattern of your own movement, because you constantly try to offset your bad "non straight" movement (which you think is only because of bad signal) delayed by dozens of seconds.
It is however true that less sky = less satellites = less signal = less localization quality. So woods and high hills kill your line so hard that is impossible to rely on it under those circumstances.
You are right in that, when standing still, the same tracker fails to perform well. This is an inherent problem of nearly all current localization methods. The filter's underlying model will correlate your noise into movement because all other input signals are non existent (you are standing still and therefore neither have acceleration nor velocity). That is a problem called "overconfidence" commonly experienced with for example kalman filters. In this specific case it is the absolute "lack of confidence" and your gps tracker was designed in a way that it outputs the noise anyways. That way you can still have the "best reasonable position with high uncertainty".
The part at 11:11 showcases a simple (translation+rotation) offset of the underlying image. The gps is consistent, you are just looking at satellite images stitched together using mercator transformations underneath the perfectly reasonable spherical coordinates. The image is wrong, not the signal. Nearly ALL satellite images are false, mostly due to orientation errors of the satellites in respect to the ground "plane" and transformation errors of the map transformation used. These image errors probably get higher on the edges of the UTM zone you are looking at.
Also ... some people think that your path is "always" offset to the "right" of your goal line. That my friend ... is the spectacular phenomenon called intrinsic bias. Not the gps is biased towards the right(absolute north) , this specific human is. His brain (and probably the brain of his buddy) is hardwired to first look right instead of left (he is British after all ;) ).
Wen we getting to see another mission. The 2 wales ones you did are the best content on youtube 👍👍 keep up the good work m8
I'd love to see Greg's Line Analysis and Pack List too.
I feel like a better measurement for how far you deviated from the line is with a least squares type of measure. For each point your GPS tracks, measure the square of the distance from the line, and add those all in a running total, and divide by the total number of points tracked. This will capture the "badness" of straying off-course by 20 or so meters for a long time, just as how it would capture the "badness" of straying 50 or so meters for a short time.
In reference to what was said around the 12:10 mark. In addition to the GPS it may be beneficial to have a bird eye map with the line drawn in so you have a definitive guide on what crap you have to wade through and what you can avoid.
Best TH-camr:
Good luck from Chile!! I'm a fan from your very first videos of geoguesser🥺
What model of GoPro are you using? Is it one that only has the 4:3 format or are you just using 4:3 by choice?
Exscuse me Mr. Wizard, what go pro do you use?
Can't wait for your next big mission
My thoughts on seeing the line and the fact that you regularly swayed more than ten metres off on clear fields (which is totally fine imo) are that you should more often feel free to go a few metres around obstacles if it makes your life a little easier. I get that you want to always stay as close as you can, but you will never be fully exact and should probably see it more as an area of tolerance than one perfect line.
Maybe a compass could be useful for when you're in places with a bad connection?
well he uses GPS, a real gps normally will always have connection, unless you are in a really deep valley with a storm over your head
His GPS unit will also have a compass on it. Doesn't use satellite reception to work, so if needed he could use that as well as any physical compass.
Seems like you guys were consistently north of the line. May have just been a difference between whatever software you're using in this video and what you were using at the time, but it seems to be consistently about 10m off. I think you guys did great.
Here's an idea. The person not holding the GPS tracker can refill water bottles, talk to farmers and home owners. The line can stay more straight then.
Is the software you are using there a special one from the GPS itself or is it just Google Maps/ Google Earth with the data from the GPS?
I think it would help in the analysis video to see how far the deviations are, when you put the lines for platinum, gold, silver.. next the the center line on both sides.
Do you know where the rules for platinum, gold, silver etc come from? I’ve never seen him explain that.
seems like either this map is off to the south or your gps is off to the north. even in the moors where you had perfect signal and could follow the line perfectly this map shows you as always being a bit north of the line, never south of it and 11:11 shows that the gps doesnt match up to the actual road you took. You're consistently north of the line and almost never south of it. In fact i think you were right in thinking you'd gone 60m off the line at 14:37. it's just that this map is showing you as being north of the line when you started when in actuality you were probably right on it
You could probably get someone to write some code to find the average of all the gps points and re-draw the line to make it the closest possible fit to the gps data. that might even allow you to improve your "score" by finding a line that minimizes the size of any deviations you made, even if it wasnt the exact line you were aiming for
I think you could come up with a numerical scoring system for these runs. It would have to be something like the total area between the actual line and the ideal line. So if you were 5 meters off the ideal line and you walked parallel to the ideal line for 100m, then your score would go up by 500 (the area between you and the ideal line). You would obviously aim for the lowest score. One possible issue with the scoring system is if someone goes 500 meters off, but they only traveled 1 horizontal meter while they were 500 meters off. They've clearly deviated far more than an acceptable amount. So maybe instead, we could square the deviation before multiplying by distance. So 5 meters off for 100 meters would be 5^2 * 100 = 2,500 added to your score. And 500 meters off for 1 meter would be 500^2 * 1 = 250,000 points. I also noticed that the ideal line is almost always south of the actual traveled line probably just due to some weird GPS thing. You could compensate for that by not using the original ideal line, but by creating a new ideal line that minimizes the score when using the scoring system I described above.
Garmins... your GPS ought to have (It does, honest) an OFF-COURSE setting in SETUP under "MARINE" . The symbol is a ship's wheel. Select the OFF-COURSE option and it will come up with numerical display. This can be set in decimal places of a mile. If you set it to 0000 .01, I think that's about 17yards or about 15m for the young and innocent. I just tried it (on Garmin eTrex20) It works. Lay out the route. Walk it. Every time you stray off line, the Garmin warbles at you. On my trial, anything over 10 meters I got an audible warning at the setting above. You have to press a button to respond to the screen message before it re-displays the map. it might be another way of staying online. In good conditions your GPS is accurate to about 3m.
Have you considered a compass for when you're in a forest? That way you can know you're going in the direction of the line, but not being pulled either side by the bad signal.
An Opinel Knife. Yes! Those are awesome. I use them since i was a teenager to cut my bread.
Tom's favourite song is Toto - Hold the Line
Tips for your next trip: a) plan two different sleeping spots for every night, one you are sure to reach and the other might be more challenging, and b) make sure to go hard on your first day. I feel like both of your missions have suffered from slow starts where you called it a day early because 'hey, this spot looks suitable to camp', even though you were still a bit out from your intended sleep spot. I don't think night falling was a super pressing concern in either first day; they were mostly 'we will make up for it tomorrow' breaks.. which you then failed to make up on the second day, only to fall behind further and get into way more trouble with your stash. You never know what terrain you are going to find, and with a limited amount of time and food stashes ahead of you, you really don't want the stress of being 'behind schedule' whenever you can avoid it.
Get an inlet for your sleeping bag. They are very thin, weigh almost nothing, but can add another 5-10 degrees to the comfort zone of your sleeping bag.