[talk-ph] talk-ph Digest, Vol 50, Issue 15

samuel cruz docsamcruz at yahoo.com
Sun Sep 16 14:55:17 BST 2012


i just learned from a friend that ipad has an application, the offmap 2 that uses odm map for philippines. not sure about this but maybe someone can confirm this.


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To: talk-ph at openstreetmap.org 
Sent: Sunday, September 16, 2012 7:00 PM
Subject: talk-ph Digest, Vol 50, Issue 15
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Today's Topics:

   1. Re: SOTM 2012 feedback (Eugene Alvin Villar)
   2. Re: iOS 6 using osm and tomtom? (maning sambale)
   3. Re: SOTM 2012 feedback (maning sambale)


Message: 1
Date: Sat, 15 Sep 2012 21:16:41 +0800
From: Eugene Alvin Villar <seav80 at gmail.com>
To: Michael Collinson <mike at ayeltd.biz>
Cc: talk-ph at openstreetmap.org
Subject: Re: [talk-ph] SOTM 2012 feedback
    <CAPhqi6JhG7UOKev=OgrJ18HGMO9t03+DOvqGSD37WLcZz-VBEA at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Hi Mike,

On Sat, Sep 15, 2012 at 5:38 PM, Michael Collinson <mike at ayeltd.biz> wrote:
> 1) Reducing latency for general mapping for as many Filipinos as possible.
> It looks as though all Philippine mapper's traffic would get routed through
> a network in or around Metro Manila no matter what.  Therefore from a
> latency point of view alone, and assuming PLDT routing, um, peculiarities,
> could be resolved then Manila would be the best place to put a server. A
> close second would be Hong Kong ... and might be better as per Eugene's
> point.

This reason suggests that latency is a big problem for editors in the
Philippines. I daresay that latency is not that big a problem when
compared to the broadband average speed of household connections in
the country. Most households, when they have broadband connections at
all, have an average maximum speed of around 1 Mbps. Actual speeds are
much less than that.

I did a ping to the OSM server from my home and I get around 400ms in
terms of latency. But when you're editing in JOSM and downloading
plenty of data, and especially if you also download GPS points too,
the download and upload of data takes several seconds. And once the
data is downloaded, JOSM will spend some time to parse the OSM XML
data and to process it for editing, and this depends on the speed of
one's computer. Given that kind of editing situation, latency is a
small problem and might not be a best target for improvement. (See
Amdahl's Law[1].)

On the other hand, setting up a server in HK would also serve many
Asian OSM communities like Japan and Indonesia. While this does not
specifically target the OSMPH community, and might not foster a
technical community, serving the Asian OSM communities might be a
better reason for the investment than simply trying to solve network
latency problems.

[1] http://en.wikipedia.org/wiki/Amdahl%27s_law


Message: 2
Date: Sat, 15 Sep 2012 21:43:26 +0800
From: maning sambale <emmanuel.sambale at gmail.com>
To: tutubi <tutubi at backpackingphilippines.com>
Cc: "talk-ph at openstreetmap.org" <talk-ph at openstreetmap.org>
Subject: Re: [talk-ph] iOS 6 using osm and tomtom?
    <CAPzumuE3u0K5-80gyxjrNiiXeSvdoHZnv5ue8e0+oVdgubZ5UA at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

I also recommend osmand for android it supports:

- offline map and routing
- voice activated routing
- gps log record and direct upload to osm
- point edits to osm

Maning Sambale (mobile)
On Sep 15, 2012 1:42 PM, "tutubi" <tutubi at backpackingphilippines.com> wrote:

> hi!
> On Sep 15, 2012, at 12:28 PM, Jim Morgan <jim at datalude.com> wrote:
> >
> > Did we have this conversation before?
> oh yes, sort of, but what was discussed even a few days ago is obsolete
> now. cant cope up.
> tried a few apps eg myTracks et al but im too lazy to download the gpx
> tracks
> > :-) This is all available on Android, although not in the same app as
> far as I can find out. You can get a nice cheap Android for about 9k these
> days (the Huawei G300 is getting good reviews), or 4k if you really push it
> (Cherry Mobile). I use Trekbuddy for OSM data with offline maps and 1s
> logging. You can run a different app for routing. At the same time if you
> want
> an android is a long time want. only reconsidering it since i've lost my
> garmin. will try the cherry mobile. i want one with a tv if there's one and
> it wont hurt much if i lose it :)
> >
> > Anyway, I don't see any reason to drop 40k on the latest Apple. Paying
> more for a phone than a computer has always seemed a little obscene to me.
> >
> >
> i got an iPhone 4s as a gift, didnt buy it :) no plan to upgrade, i'm a
> peso-pincher i only need a handy camera. it will be with me til it conks
> out or lose it
> _______________________________________________
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Message: 3
Date: Sat, 15 Sep 2012 22:08:24 +0800
From: maning sambale <emmanuel.sambale at gmail.com>
To: Michael Collinson <mike at ayeltd.biz>
Cc: osm-ph <talk-ph at openstreetmap.org>
Subject: Re: [talk-ph] SOTM 2012 feedback
    <CAPzumuEO28AiYUrj=xHLyJqU5doEwd_dXxzFVbSQg6-45pNMAQ at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

If data editing latency is not a big problem, perhaps we can use a high
capacity server for other things.

>From a data consumer POV, maybe we can:
- create a map style that incorporate PH specific tags that are not shown
in the default osm map (osm-jp's case);
- provide province/municipal extracts in various format like shapefile that
also include ph specific tags (not entirely sure, but I think HOT in
Indonesia did it);
- reliable gps map download;
- imagery server (we currently access some imagery from jgc also of osm-fr);
- sandbox server for many ideas discussed here.

@mike, do you think this is something osm-fr can support?

Maning Sambale (mobile)
On Sep 14, 2012 11:24 PM, "Michael Collinson" <mike at ayeltd.biz> wrote:

> Hallo Maning and all and to Mario Baras who was at SOTM 2012 and is on
> this list.
> I see from Maning's post to the general talk list that he is already
> familar with the French http://live.openstreetmap.fr/. Now here is an
> interesting thing.  OSM France have also built and are operating a caching
> download/proxy upload server for editing.  It down loads diffs every
> minute.  JOSM users can re-direct their editors to use it instead of the
> London server. There is also a way to trick Potlatch into using it. For
> French and many European users it provides much better response. When you
> upload, then it sends your edit to London. It has been running for 6 months
> and appears to work correctly.
> And then another thing:  OpenStreetMap France also have funding to do
> things. But they cannot spend it in France. Dot, dot, dot.
> So I asked Christian Quest, "If there was interest, could they fund a
> similar server in the Philippines?" and got a very positive response with
> the caveat that a proposal has to be presented to the funding organisation
> and they can say yes or no. The proposal could consist of a) server(s), b)
> travel by OpenStreetMap France to the Philippines to train (perhaps not
> vital but good to create a working relationship) and c) funding to put it
> in a high availability data centre.
> So, any interest?
> In addition to helping poor connections (comments?), I see it as a way to
> build up a strong system administration team to complement the mapping
> community. The Philippine and Japan communities are probably the strongest
> in Asia right now.  I would also suggest that it could be used as a H.O.T
> server to be used in natural calamities if anyone is interested in getting
> involved there ... that might also improve the chances of funding.
> Mike
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