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Hi <br>
There are lots of sites giving advice on GPS usage, but one I tip I
found useful was always keep a charged battery in your unit. Even
though it's switched off it still receives the occasional signal
from satellites to keep track of their locations. if it loses
coordination with them it can take ages to relocate.<br>
<br>
Cheers<br>
DaveF<br>
<br>
<div class="moz-cite-prefix">On 06/11/2018 11:37, Oleksiy Muzalyev
wrote:<br>
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<div class="moz-cite-prefix">Thank you, dikkeknodel. <br>
<br>
I also received an email message with an advice to acquire
Garmin eTrex. I've ordered the Garmin eTrex 35 Touch with the
pre-installed «TopoActive» Karte Europa, which is based on the
OSM data, as I understood:<br>
<a class="moz-txt-link-freetext"
href="https://www.brack.ch/garmin-hand-gps-etrex-touch-370929"
moz-do-not-send="true">https://www.brack.ch/garmin-hand-gps-etrex-touch-370929</a><br>
<br>
It supports the EGNOS, European Geostationary Navigation Overlay
Service, which is supposed to correct the GPS signal. I have no
idea how it works in reality. It also has got the GPS and
barometric altimeters.<br>
<br>
Best regards,<br>
Oleksiy<br>
<br>
<br>
<br>
On 05.11.18 19:59, _ dikkeknodel wrote:<br>
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<p class="MsoNormal"><span lang="EN-GB">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Thanks for all the
great advice. I’ve looked into uMap and it does the job
perfectly. With all the gpx of over a year of hiking
imported it still runs smoothly. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I would like to
prevent running into performance issues later though. Does
anybody know if it is wise to add ‘simplified’ versions of
the gpx to uMap instead of the original recordings with 1
s resolution? <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Since the published
data is public, I just have to take into account not to
import gpx which start from my home since I value my ‘sort
of anonymity’.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-GB">@Oleksiy<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-GB">To answer Oleksiy’s
question, I record with OSMand on a Moto G4 smartphone,
that works like a charm. Off course there is fluctuation
due to accuracy errors, I guess 10-15 m is achievable most
of the time, but close to near vertical mountains it
becomes much worse. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">It however does never
happen that I miss long stretches of data (except for
tunnels </span><span style="font-family:"Segoe UI
Emoji",sans-serif" lang="EN-GB">😝</span><span
lang="EN-GB">). I did have that problem in the past, when
<15% battery charge and Android automatically started
the battery saving mode. That just turned of the gps
antenna whenever the screen was off. So now I have set
battery saving mode to off. <o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Also OSMand does not
drain the battery much. Usually I do take a lot of notes
which OSMand attaches to the gpx and loads perfectly into
JOSM. Recently I also used the voice recorder of OSMand,
which really speeds up the note taking while on the go in
comparison to typing. These also load into JOSM via the
gpx, but some fiddling with the location of the audio is
required. Taking notes on the phone does have an effect on
the battery life off course. A 20 km hike in the mountains
easily takes 6-8h, which my phone reaches most of the time
on one charge in flight mode. I do have a power-bank as
back-up, and for multi-day hikes though.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Altitude measurements
have always been a bit tricky with OSMand. I guess the raw
elevation data from gps fluctuates quite a lot, and the
data processing did not do a good job filtering errors
from actual elevation change. After a hike with 1000m
elevation gain according to the map, OSMand often showed I
did 5000m... The graph of the track you can generate in
OSMand also showed a lot of spikes with instant ascents of
>200m. Recently that seems to have changed and the
measurements seem to better represent the actual
situation.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Hope this helps you
with you work OSM workflow!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">dikkeknodel<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="border:none;padding:0cm"><b><span
lang="EN-GB">Van: </span> </b><span lang="EN-GB"><a
href="mailto:oleksiy.muzalyev@bluewin.ch"
moz-do-not-send="true">Oleksiy Muzalyev</a><br>
<b>Verzonden: </b>zaterdag 3 november 2018 18:51<br>
<b>Onderwerp: </b>Re: [OSM-talk] How to get an overview
of multiple gpx on OSM map?<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB">Hi
_dikkeknodel,<br>
<br>
I have a question - how do you record a GPX trace during
20 km walk? It should be about 4 hours. <br>
<br>
I also record GPS traces but usually for 15-20 minutes. I
use a phone with the OSMTracker app for Android with mixed
results. Sometimes it records a path well, sometimes it
turns the second part of the walk into a long direct line.
Such a trace I usually discard.<br>
<br>
Besides it empties the phone battery rather quickly. I
usually take a power-bank with me, but still it is not a
good solution to get a phone battery empty in mountains.<br>
<br>
I am thinking of getting a dedicated device which can
record the GPX files, on the OSM map, and also measure and
altitude more or less correctly. The question is - what
device, what model.<br>
<br>
Best regards,<br>
Oleksiy<br>
<br>
<br>
On 03.11.18 16:09, _ dikkeknodel wrote:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black" lang="EN-GB">Hi
all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB">Ever
since I moved to Switzerland over a year ago I’ve been
both hiking in the mountains and updating OSM details a
lot. Since I hike at least 20 km every weekend, it must
have totaled to about 1200 km by now all across the
country. I would love to get an overview of where I have
been so far. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB">Since
I’ve got a GPX file of almost every hike, the data is
there. I am now looking for a nice graphical way to plot
all of these files at once on a nice OSM map,
OpenTopoMap as a base layer would be great. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB">I’ve
been searching for a while how to arrange this (without
much programming knowledge), but I am kind of lost at
the moment. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB">Does
anybody have a hint?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB">dikkeknodel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB"><br>
<br>
<br>
<o:p></o:p></span></p>
<pre><span lang="EN-GB">_______________________________________________<o:p></o:p></span></pre>
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<p><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-GB"><o:p> </o:p></span></p>
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