Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-27 Thread dion
From: Rodent of Unusual Size [EMAIL PROTECTED]
 
 Dirk-Willem van Gulik wrote:
  The map on:
  
 http://cvs.apache.org/~dirkx/sgala.html
  
  has had a wee enhancement; if you zoom in far enough; the boring 
digital
  terrain map of etoto5 gets replaced by mapblast. Depending on which 
part
  of the world you're in, the projection is about right :-)

That map shows only one person in Australia...how are the people 
determined?
--
dIon Gillard, Multitask Consulting
Blog:  http://www.freeroller.net/page/dion/Weblog
Work:  http://www.multitask.com.au




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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-27 Thread David Crossley
[EMAIL PROTECTED] wrote:
snip/
 That map shows only one person in Australia...how are the people 
 determined?

Do 'cvs checkout committers' and 'cd krell'
See the FAQ. Also there are various past threads
on committers@

I have been feeling very alone, being the only target here.
Especially with the behaviour of our country leaders.

--David




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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-27 Thread dion
From: Rodent of Unusual Size [EMAIL PROTECTED]
 
 Dirk-Willem van Gulik wrote:
  The map on:
  
 http://cvs.apache.org/~dirkx/sgala.html
  
  has had a wee enhancement; if you zoom in far enough; the boring 
digital
  terrain map of etoto5 gets replaced by mapblast. Depending on which 
part
  of the world you're in, the projection is about right :-)

That map shows only one person in Australia...how are the people 
determined?
--
dIon Gillard, Multitask Consulting
Blog:  http://www.freeroller.net/page/dion/Weblog
Work:  http://www.multitask.com.au

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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-27 Thread Conor MacNeill
[EMAIL PROTECTED] wrote:
That map shows only one person in Australia...how are the people 
determined?
There is a file urls.txt in the committers module in CVS. Add yourself in 
and add the appropriate bits to the given URL (check the ones there for 
examples). I'll be adding myself soon as I get some spare cycles.

Conor

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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-26 Thread Dirk-Willem van Gulik


On 26 Feb 2003, David Crossley wrote:

  http://cvs.apache.org/~dirkx/sgala.html

 I gather that you must be using some browser-specific
 facilities here. I use Mozilla and the map is a mess
 after the first zoom.

Darn - I was quite happy as I got it to work after endless fiddling on IE,
Mozzila and Safari on MacOSX and a PC. So I guess it needs more fine
tuning. Which is well out of my expertize range. Any takers ?
http://cvs.apache.org/~dirkx/inline.js is the culprit.

 but i was hoping that this simple stuff could be done
 with a basic browser.

Actually what you see there is not that simple; it is a miniature GIS with
6-7 layers which are independently fetched and merged from different WMS
servers across the itnernet. A perl based version (serverside) would be:

http://demo.asemantics.com/zoom.pl

but that kind of spoils the fun; as it relies on a cetral infrastructure.

Dw


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-26 Thread Dirk-Willem van Gulik


On 26 Feb 2003, David Crossley wrote:

 I see people talking about co-ordinate precision of
 less than 100 metres. So how are they determining
 their position? Do they each have a differential GPS
 in their pocket? If someone has some clever facility
 to determine an accurate position, then please tell us.

Actually; since SA was dropped, and assuming you are using WGS84 and you
are not too high or low an altitude - you are generally within 5-20 meters
for most of europe - with just about any cheap GPS.

Dw.


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-26 Thread Santiago Gala
David Crossley wrote:
Dirk-Willem van Gulik wrote:
Now I've noticed quite a few folks falling off the shore, and into a
nearby rivers and canals. Which unless you are living on a boad - is
propably not quite correct. So I'd love to know if that is projection
issue; or a true issue with the location you entered.

I see people talking about co-ordinate precision of
less than 100 metres. So how are they determining
their position? Do they each have a differential GPS
in their pocket? If someone has some clever facility
to determine an accurate position, then please tell us.
Differential GPS is no longer needed, they have withdrawn the 
intentional unaccuracy in 2000, I think (except that the DOD will inject 
errors in the system when they need it, maybe in the next few weeks).

My GPS (a modern cheap Garmin eTrex), averaged during a whole night up 
in my house drifted no more than 5m around. This is consistent with the 
positioning in the map, now that I have entered six figures in my data.

The Northern Hemisphere could have more satellites round, thus better 
coverage, because there is more people (I got amazed with the population 
density map) and more economic activity. But I'm not sure there is a 
difference in precision between Spain and Australia.

WRT Mozilla, I'm seeing it with Mozilla 1.1, no problem (except that 
when you click it takes a while for the layers to stabilize, with a not 
so nice visual effect).

--David

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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-26 Thread Dirk-Willem van Gulik


On Wed, 26 Feb 2003, Santiago Gala wrote:

 My GPS (a modern cheap Garmin eTrex), averaged during a whole night up
 in my house drifted no more than 5m around. This is consistent with the
 positioning in the map, now that I have entered six figures in my data.

Another thing to check on your GPS is the filters; most GPS-es have a
special mode for stationary position taking. Sometimes called 'Timer
mode'. On some GPS-es it is called 'neutral/boat/car/aviation' mode -
where the 'boat' mode makes constant height assumptions which may give you
a better fix.

Dw


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-26 Thread Kurt Schrader
On Wed, 26 Feb 2003, Dirk-Willem van Gulik wrote:

 On 26 Feb 2003, David Crossley wrote:

 http://cvs.apache.org/~dirkx/sgala.html

  I gather that you must be using some browser-specific
  facilities here. I use Mozilla and the map is a mess
  after the first zoom.

 Darn - I was quite happy as I got it to work after endless fiddling on IE,
 Mozzila and Safari on MacOSX and a PC. So I guess it needs more fine
 tuning. Which is well out of my expertize range. Any takers ?
 http://cvs.apache.org/~dirkx/inline.js is the culprit.

Works fine here on Mozilla 1.2.1 on Linux.  Perhaps a bug in a specific
version?

-Kurt


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-26 Thread Ben Hyde
Santiago Gala wrote:
Another one, ~n in ~nacho gives a newline in 
krell/bin/scrape_location.pl, and thus fails. I don't speak enough 
perl for this one.
My fault.  I've poked a repair into the sources.
(Funny, it took 57 people to trigger these bug, while n should be 
1/25 or so ;-)

We can learn that: With enough data, all software is buggy ;-)
I like that Given enough eyes all bugs are shallow. is four metaphors 
in one sentence (thanks to Karen Healy[1] for noticing three of them).

 - ben
[1] http://www.kieranhealy.org/blog/ -- her blog.
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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-26 Thread Jeff Trawick
David Crossley wrote:
I see people talking about co-ordinate precision of
less than 100 metres. So how are they determining
their position? Do they each have a differential GPS
in their pocket? If someone has some clever facility
to determine an accurate position, then please tell us.
I ended up plugging a rough draft into mapquest and tinkering with the 
numbers until I liked where mapquest plotted me

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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-26 Thread Torsten Curdt
snip/
Well, my position a couple of miles off the right spot.

The coordinates are supposed to be in fractions of a degree, *not* 
degrees minutes seconds. Also, the georeference could spoil the fine 
tuning. I can't remember the name (WGS, I think)
fine tuning?
1 minute is 1 nautical mile, so 1/60 instead of 1/100 could get you there.
Hm.. I used to know...
My position is 51'3159 9'5611 and my icbm coordinate is currently
  51.53306;9.993644
So applying this X degrees, Y minutes, and Z seconds, the decimal 
equivalent is X + Y/60 + Z/3600 I get

  51 + 31/60 + 59/3600, 9 + 56/60 + 11/3600
  51.53306, 9.93639
...wondering what I did wrong the last time ;)
Using http://demo.asemantics.com/zoom.pl I found myself at
(BTW: shoudn't LAT / LONG be switched?)
  51.53316000,9.93585304
I updated my icbm page. Curious to see where it gets me :)
--
Torsten
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RE: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Scott Sanders
As far as I can tell, in the SF Bay area, it is off by about 20 feet.
Not bad at all :)

Scott

 Now I've noticed quite a few folks falling off the shore, and 
 into a nearby rivers and canals. Which unless you are living 
 on a boad - is propably not quite correct. So I'd love to 
 know if that is projection issue; or a true issue with the 
 location you entered.
 

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RE: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Scott Sanders
Nevermind, if you zoom in far enough (below about 50 yards), it is spot
on.

Way to go!

 As far as I can tell, in the SF Bay area, it is off by about 
 20 feet. Not bad at all :)
 

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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Santiago Gala
Dirk-Willem van Gulik wrote:
The map on:
http://cvs.apache.org/~dirkx/sgala.html
In 
http://memojo.com/memojowiki/Wiki.jsp?page=SantiagoGalaBlog_blogentry_250203_2

I have two scaring maps from Dirk ;-) Spanish comments, I'm trying to 
not forget my Spanish. I'm trying to _also_ blog in English, but time is 
scarce.

I'm about 20m (60ft) NE. But I wonder what would happen if I add another 
figure to the urls.txt thing.

Regards,
 Santiago
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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Santiago Gala
Torsten Curdt wrote:
Dirk-Willem van Gulik wrote:
The map on:
http://cvs.apache.org/~dirkx/sgala.html
has had a wee enhancement; if you zoom in far enough; the boring digital
terrain map of etoto5 gets replaced by mapblast. Depending on which part
of the world you're in, the projection is about right :-)

Amazing!
Now I've noticed quite a few folks falling off the shore, and into a
nearby rivers and canals. Which unless you are living on a boad - is
propably not quite correct. So I'd love to know if that is projection
issue; or a true issue with the location you entered.

Well, my position a couple of miles off the right spot.
The coordinates are supposed to be in fractions of a degree, *not* 
degrees minutes seconds. Also, the georeference could spoil the fine 
tuning. I can't remember the name (WGS, I think)

1 minute is 1 nautical mile, so 1/60 instead of 1/100 could get you there.
Regards,
 Santiago
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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Dirk-Willem van Gulik


On Tue, 25 Feb 2003, Santiago Gala wrote:

 I'm about 20m (60ft) NE. But I wonder what would happen if I add another
 figure to the urls.txt thing.

Please try !

Dw


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread David Reid
 1 minute is 1 nautical mile, so 1/60 instead of 1/100 could get you there.
   ^^^

Only at the equator...

david



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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Dirk-Willem van Gulik


On Tue, 25 Feb 2003, David Reid wrote:

  1 minute is 1 nautical mile, so 1/60 instead of 1/100 could get you there.
^^^
 Only at the equator...

Or use the minutes N/South - they are more constant.

Dw


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Santiago Gala
David Reid wrote:
1 minute is 1 nautical mile, so 1/60 instead of 1/100 could get you there.
   ^^^
Only at the equator...
I forgot to say meridian, sorry. In Latitude, one minute is always 1 
nautical mile, In Longitude (East-Westwards) only in the Equator.

So I stand half corrected (let's say orthogonally corrected) ;-)
Regards,
 Santiago
david

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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Dirk-Willem van Gulik


On Tue, 25 Feb 2003, Jeff Trawick wrote:

 can somebody remind me of where to find the address-long/lat mapping
 for the US?  I'm about a mile off on the new zoom in and would like to
 try adding some digits.

This tool

http://demo.asemantics.com/zoom.pl

shows the point of click below. Not sure if it is accurate enough to zoom
in that far; as it is based on perl its floats.

Dw.


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Ask Bjoern Hansen
On Tue, 25 Feb 2003, Jeff Trawick wrote:

 can somebody remind me of where to find the address-long/lat mapping
 for the US?  I'm about a mile off on the new zoom in and would like to
 try adding some digits.

http://geourl.org/ has a couple of links.


 - ask

-- 
ask bjoern hansen, http://askbjoernhansen.com/  !try;
develooper llc,http://www.develooper.com/   do();


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Steven Noels
Dirk-Willem van Gulik wrote:

Now I've noticed quite a few folks falling off the shore, and into a
nearby rivers and canals. Which unless you are living on a boad - is
propably not quite correct. So I'd love to know if that is projection
issue; or a true issue with the location you entered.
I zoomed in upto 100ft resolution, and from the looks of it, it seems 
like I'm standing in my garden instead of in my front door. Given the 
fact that the distance between door and garden is only 25 meters, it 
seems like the projection is 'quite' accurate ;-D

/Steven
--
Steven Noelshttp://outerthought.org/
Outerthought - Open Source, Java  XML Competence Support Center
Read my weblog athttp://blogs.cocoondev.org/stevenn/
stevenn at outerthought.orgstevenn at apache.org
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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread Dirk-Willem van Gulik


On Tue, 25 Feb 2003, Rodent of Unusual Size wrote:

  has had a wee enhancement; if you zoom in far enough; the boring digital
  terrain map of etoto5 gets replaced by mapblast. Depending on which part
  of the world you're in, the projection is about right :-)

 heh heh.  now to tie in terraserver or one of the other satellite
 imaging systems. :-)

Working on it :-) (and lets hope we win the next contract to do the real
system as well :-)

Dw


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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread David Crossley
Dirk-Willem van Gulik wrote:
 
 The map on:
 
   http://cvs.apache.org/~dirkx/sgala.html
 
 has had a wee enhancement; if you zoom in far enough;...
snip/

I gather that you must be using some browser-specific
facilities here. I use Mozilla and the map is a mess
after the first zoom.

Is there some other browser that i should use on Linux?
Yes, i know that i could get a dedicated WMS client,
but i was hoping that this simple stuff could be done
with a basic browser.

--David




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Re: [off-topic-just for fun] - Maps and zoom-in

2003-02-25 Thread David Crossley
Dirk-Willem van Gulik wrote:
 Now I've noticed quite a few folks falling off the shore, and into a
 nearby rivers and canals. Which unless you are living on a boad - is
 propably not quite correct. So I'd love to know if that is projection
 issue; or a true issue with the location you entered.

I see people talking about co-ordinate precision of
less than 100 metres. So how are they determining
their position? Do they each have a differential GPS
in their pocket? If someone has some clever facility
to determine an accurate position, then please tell us.

--David



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