GPS units

22 May 2013 08:38 - 22 May 2013 08:40 #57021 by tiska
Replied by tiska on topic GPS units

PeterHowells wrote: gps navigation is the future but for now I recommend having a gps and a good map when hiking.


PH's comment made me think of the following:
I wonder if the map will ever be superseded by the GPS alone. One thing a GPS can't ever do is show you a map covering a large domain at a small scale (e.g. 1:50 000). It can only ever show a part of the domain at a small scale and in detail. Some designers of Formula 1 cars still use old fashioned drawing boards because they can get the detail and the big picture on one piece of paper. A map is the same. This is assuming we won't ever have a GPS device with an enormous screen.

(I recognise that PH wasn't suggesting the GPS device will replace the map).....
Last edit: 22 May 2013 08:40 by tiska.

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22 May 2013 08:52 #57024 by Selous
Replied by Selous on topic GPS units
Hi All

Interesting discussion.

On quick day walks up to the high berg to bag a pass or two I use a time saving way of navigating. I use Oziexplorer to plot my waypoints and track log onto a 1:50 000 topo map. I then colour print an A4 map of the area that I am doing with the waypoints and track log on. I then have my intended waypoints transferred to the GPS.

While I am walking with the GPS tracking my intended route I am able to quickly determine where I am by seeing my "bread crumb trail" between say example waypoint 31 and waypoint 32 and then seeing those exact waypoints on my A4 printed map. I find this helps immensely when you might have time constraints. Kinda cheating but helps.

I do however on multi day trips like just to nav with my map and have the GPS as backup.

Selous

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22 May 2013 08:59 #57025 by ghaznavid
Replied by ghaznavid on topic GPS units

mnt_tiska wrote: I wonder if the map will ever be superseded by the GPS alone.


Merged, maybe, but definitely not replaced. It's like cameras and cellphones, cameras on phones are much better than they were on the first camera phones, but a camera on a phone is still far inferior to even a cheap R600 camera.

Just the fact that GPS devices go crazy when near a rock face is enough for me to think they will never be an absolute solution - unless they can find a solution to the bouncing signal problem. My GPS told me I was going downhill while going up the steepest part of Judge Pass and told me I was going uphill while I was descending Rhino Pass (it actually said I was 100m higher than Rhino Peak's summit).

mnt_tiska wrote: This is assuming we won't ever have a GPS device with an enormous screen.


:laugh: I'm just picturing a person carrying around a 42" TV with a massive solar panel to power it.

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22 May 2013 13:57 #57029 by plouw
Replied by plouw on topic GPS units
I have to admit, my best memories of the berg are those where you are kind off lost and have to study the map properly to determine your exact location. Like the time we ascended Ifidi in the mist and went up a side gully underneath Mt Oompie, luckily the mist cleared for a few minutes and we could determine our position by studying the peaks. Or all those times we've searched for caves, and eventually stumbled upon them. These experiences build your confidence out there in the berg, where I am afraid a GPS could too easily be pulled out to determine position and therefore prevent you from handling the situation. It's like a calculator, realised how the older (pre-calculator) generation can quickly do a math, our newer generation tend to grab the phone to calculate.

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22 May 2013 20:19 - 22 May 2013 20:36 #57035 by intrepid
Replied by intrepid on topic GPS units

thomas wrote: Moderators, sorry I have blown VE Forum protocol out of the water and I know Intrepid will kill me for it. If someone moves these I will be happy to continue this very interesting thread and leave Gray's Pass to its own devices.

Lucky for you VE Forum protocol is actually that nobody gets killed :) It is natural for human conversation to be unsystematic and for it to digress into new topics. At the same time much effort is made to keep the information growing on this site organised in the best way possible to keep it easy to use for future reference. Try stick to the topic but never let it stifle new thoughts which may lead to some really constructive discussions. If a conversation goes off topic just work with the moderators in sorting it out, as it was in this case. Its also great to have a team of moderators around, as this particular case was handled totally fine without me even having had time to keep up here during the day.

I agree that a GPS should be an extension of your own, well-grounded navigational skills and mountain-sense. When a friend first suggested I take along his GPS on a Berg trip my reaction was one of "why would I need it?". Now it's an indispensable toy that I'm never in the Berg without, though I can live without it if need be. I've done my share of hiking in the mist and in the dark without one, these days its a whole lot smoother with one and I get to fulfil my objectives for a trip that much easier.

There are more reasons beyond navigational needs too. I keep an active track-log of absolutely everything I do in the Berg, and this vitally enhances my journals and memories of past trips. At the same time this contributes to an ever-growing pool of data which opens up a whole new world you are into mapping and studying things on Google Earth. It also allows for collection of important data such as positions and measurements of peaks, and locations of alien invasive vegetation such as pine and wattle.

thomas wrote: GPS is merely the door to further Berg enlightenment

Along a similar thought, GPS data published on this site may merely be one of the channels through which people can find this forum and engage in deeper topics on the mountains...

And as a courtesy to Thomas, VE will not publish waypoints of his favourite meditation caves in the Berg.

Take nothing but litter, leave nothing but a cleaner Drakensberg.
Last edit: 22 May 2013 20:36 by intrepid. Reason: typo

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23 May 2013 08:15 #57038 by thomas
Replied by thomas on topic GPS units
And as a courtesy to Thomas, VE will not publish waypoints of his favourite meditation caves in the Berg.

Thank you, hrrumph. Thanks to Intrepid's mercy I will live another day to meditate in the Berg.

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23 May 2013 16:50 - 23 May 2013 16:51 #57042 by ghaznavid
Replied by ghaznavid on topic GPS units
Maybe slightly off topic, but I had to share this one...

Sometimes a route description may be slightly cryptic. Lets take the RD on the Fourth Cigar at Northern Monk's Cowl/Southern Didima (some supplementary commentary added later has been removed):

a left hand descent of the falls leads to an obvious C traverse. By getting lost in the mist the start of the climb was reached. From the start climb to the right of a large block up some 30 feet (10m), and 120 feet (40m) of D. A right hand traverse leads to 20 feet (6m) of E and an obvious 80 foot (25m) E chimney to the summit.

Last edit: 23 May 2013 16:51 by ghaznavid.

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27 May 2013 00:00 #57065 by Serious tribe
Replied by Serious tribe on topic GPS units
If anyone has seen the movie 'The Red Planet', and strangly for one who loves the earth as much as i do, one of my favourite movies. Likely it is the adventure and explorer theme.

In it they use a flexible gps map, which can be rolled up. Given enough time, maps will likely get to this point, and then as mtn.tiska says we will be able to see the whole of the map, which is always in my mind a failing of small gps screens. I also like to be able to see the whole picture and then zoom in on a particular area, just by putting my face closer to the map or just moving it around in my hands.

Then, i am old school :woohoo:

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29 May 2013 07:20 #57089 by dunmor
Replied by dunmor on topic GPS units
Waking with your wife and getting lost does not go down well.
In my experience (with little berg experience) a GPS makes a great difference. For the experienced hiker it maybe working by numbers.
In my case it's a tool I would never leave without.
I really appreciate the tracks that are posted, they make my hikes a pleasant experience.

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29 May 2013 08:39 - 29 May 2013 08:42 #57090 by diverian
Replied by diverian on topic GPS units
You hit the nail on the head there dunmor....getting "lost" does not go down well with my hiking buddy / wife either!

Which is why I never leave home without it....with a downloaded track or at least a propose track digitized from the Geomaps and cross referenced on Google Earth.
Last edit: 29 May 2013 08:42 by diverian.

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