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To whom it may concern:
The World Map of Pov-Ray Users has never had better accuracy, I
discovered a flaw in the markers which caused them to be elevated
above the globe slightly and at oblique viewing angles this created a
position offset (thanks Antti!). To summarize, they were once more
spherical and then had later been flattened out, this left their
centers hovering. It wasn't so noticeable before the "zoom" views.
Plus there has been refinements made on a couple locations as well.
Enough said. Check it out again everyone, if you will. If you are
near a edge of the "world" you may be surprised at the difference from
previous maps.
http://members.aol.com/wrld0rigin/povwrldjpg.htm
PS the map has been going for more than 6 months and I hope it keeps
going. If you haven't yet submitted your location please consider
doing so, just click on a part of one of the 3 globes which isn't
designated as North America, Europe, or Australia and that will take
you to the submission web page (be sure to bookmark the URL so you can
get back anytime). Thanks to everyone.
Bob
--
omniVERSE
http://members.aol.com/inversez/POVring.htm
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On Sun, 12 Sep 1999 11:06:46 -0500, Bob Hughes <inv### [at] aol com> wrote:
>discovered a flaw in the markers which caused them to be elevated
>above the globe slightly and at oblique viewing angles this created a
>position offset (thanks Antti!). To summarize, they were once more
I'm glad if my complaints have been helpful, I'm now happy with my
location on the map and the rest of us finns probably too - at least they
seem to be rather accurately in/near larger cities.
--
Antti Arola (@lut.fi)
aea### [at] ioboxfi
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It's really strange that, considering the number of spanish-speaking people
here, there are no spots in Spain and only a few in Central and South America.
--
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/
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The "main cities" is one reason I hadn't firmly accounted for
locations before, very few people were said to be using only a city
coordinate so most are likely in surrounding areas. London seemed to
be where it should have been for example but I was trying to line up a
paper map with a gridless image so the only really alignable cities
would be on a coastline with obvious landmarks. Also I had only done
that based on the full view of the 3 globes which didn't need much
accuracy anyhow. From what I've been able to tell everyone should be
within a 1/4 degree, or about 12.5 miles, of there actual location
(possibly as much as 1/2 degree or 25 miles). But then I've only just
now been able to check according to this more accurate rendering so it
may be better or worse. I know my marker seems to be less than 10
miles off if at all. I haven't zoomed in yet on various locales to
further see the precision/inaccuracy.
Bob
Antti Arola <aea### [at] ioboxfi> wrote in message
news:slr### [at] kuhacclutfi...
> On Sun, 12 Sep 1999 11:06:46 -0500, Bob Hughes <inv### [at] aolcom>
wrote:
> >discovered a flaw in the markers which caused them to be elevated
> >above the globe slightly and at oblique viewing angles this created
a
> >position offset (thanks Antti!). To summarize, they were once more
>
> I'm glad if my complaints have been helpful, I'm now happy with my
> location on the map and the rest of us finns probably too - at least
they
> seem to be rather accurately in/near larger cities.
>
> --
> Antti Arola (@lut.fi)
> aea### [at] ioboxfi
>
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Hi Bob Hughes, you recently wrote in povray.general:
> I haven't zoomed in yet on various locales to
> further see the precision/inaccuracy.
I've been doing a similar project with the registered Moray users and
I've had to write a tool to convert from the real lat/long coordinates
to the ones that I use for the rendering. Turns out the map I'm using
(2048x1024) is a tad inaccurate (error varies up to 2 to 3 degrees
non-linearly), so things now line up pretty nicely.
I also wrote a program that queries the online database at USGS for
the lat/long of the US cities (don't fancy finding 600 pairs by
hand<g>).
I'm currently looking for a website that can do lat/long lookup for
non-US cities and that can be queried directly, i.e. with an HTTP
request. No luck so far.
- Lutz
email : lut### [at] stmuccom
Web : http://www.stmuc.com/moray
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On Mon, 13 Sep 1999 15:04:36 GMT, Lutz Kretzschmar wrote:
>I'm currently looking for a website that can do lat/long lookup for
>non-US cities and that can be queried directly, i.e. with an HTTP
>request. No luck so far.
You might try this one, though it looks like you'll have to do two
HTTP requests and may have to further validate the results:
http://www.nima.mil/gns/bin/validate_query
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Ron Parker <par### [at] fwicom> schreef in berichtnieuws
37dd22d6@news.povray.org...
> You might try this one, though it looks like you'll have to do two
> HTTP requests and may have to further validate the results:
>
> http://www.nima.mil/gns/bin/validate_query
You can't go to the validate_query in one step, it gives an error.
You'll have to go via http://164.214.2.59/gns/html/index.html
Ingo
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You might want to take a look at this web page if you haven't seen it
already:
http://www.ssc.msu.edu/~geo/wwwgis.html
It seems to have a lot about such things. Another place I tried out
found some cities lat/lon okay but not for smaller or lesser known
ones so it doesn't work too well for that purpose. The MapBlast I
have linked to on one of my pages seems good, you just need to select
"International" from the drop-down list.
Bob
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Heh... <jar-jar> meesa da only dot in Panama. </jar-jar>
--
Anthony L. Bennett
http://welcome.to/TonyB
Non nova, sed nove.
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Hi,
The Pov-world population is growing. Soon some countries will be hidden
under the markers :-)
Maybe you could use coloured markers for each country. You really don't
need that many different colours so that no two neighbouring countries
have the same coloured markers. Then you could actually see how many
users live in Belgium, the Netherlands or Luxemburg. Now it is one
cluster.
Also, linking the marks to counties might allow for corrections per
country. If for instance a user of Christmas Island - is there one? - is
getting wet feet, you could place him back on land, without having to
correct the rest of the world.
Smellenbergh
--
e-mail:sme### [at] skynetbe
http://users.skynet.be/smellenbergh
>Bob Hughes <inv### [at] aolcom> wrote:
> The World Map of Pov-Ray Users has never had better accuracy, I
> discovered a flaw in the markers which caused them to be elevated
> above the globe slightly and at oblique viewing angles this created a
> position offset (thanks Antti!). To summarize, they were once more
> spherical and then had later been flattened out, this left their
> centers hovering. It wasn't so noticeable before the "zoom" views.
> Plus there has been refinements made on a couple locations as well.
> Enough said. Check it out again everyone, if you will. If you are
> near a edge of the "world" you may be surprised at the difference from
> previous maps.
>
> http://members.aol.com/wrld0rigin/povwrldjpg.htm
>
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Hi Ron Parker, you recently wrote in povray.general:
> You might try this one, though it looks like you'll have to do two
> HTTP requests and may have to further validate the results:
>
> http://www.nima.mil/gns/bin/validate_query
Yes, I tried that one, but it's a two-step process and even passing
the same data to the second step as the form does, gives an error
message (sigh).
I really hate to do a two-step process, it's a pain to program and I
have better things to program.... oh well, we'll see if I can get
something going.
- Lutz
email : lut### [at] stmuccom
Web : http://www.stmuc.com/moray
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Lutz Kretzschmar wrote:
> ...
> I also wrote a program that queries the online database at USGS for
> the lat/long of the US cities (don't fancy finding 600 pairs by
> hand<g>).
>
> I'm currently looking for a website that can do lat/long lookup for
> non-US cities and that can be queried directly, i.e. with an HTTP
> request. No luck so far.
You might take a look at Home Planet at
http://www.fourmilab.ch/homeplanet/ - the lookup for nearest big city
(worldwide) might be extractable. If not, perhaps the DB is. Even if
you can't use the city DB, the program itself is pretty nice...
Xander
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On Tue, 14 Sep 1999 07:25:21 GMT, Lutz Kretzschmar wrote:
>Hi Ron Parker, you recently wrote in povray.general:
>
>> You might try this one, though it looks like you'll have to do two
>> HTTP requests and may have to further validate the results:
>>
>> http://www.nima.mil/gns/bin/validate_query
>
>Yes, I tried that one, but it's a two-step process and even passing
>the same data to the second step as the form does, gives an error
>message (sigh).
Have you tried faking a referer header?
Alternatively, you might try this:
http://www2.gsoc.dlr.de/scripts/satvis/countries.asp
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Hi Ron Parker, you recently wrote in povray.general:
> Have you tried faking a referer header?
Nope, didn't try that.
> Alternatively, you might try this:
> http://www2.gsoc.dlr.de/scripts/satvis/countries.asp
Ahh, now that looks very promising....
- Lutz
email : lut### [at] stmuccom
Web : http://www.stmuc.com/moray
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Hi Alexander Enzmann, you recently wrote in povray.general:
> You might take a look at Home Planet ...
Yes, I checked the website, but it didn't lookl like it could extract
the cities....
- Lutz
email : lut### [at] stmuccom
Web : http://www.stmuc.com/moray
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I've been doing some thinking (only thinking) about changing the
markers, however country-based colors was not one of the thoughts, so
thanks for suggesting it whether I do that or not.
Only real problem comes from making them very obvious, since red is
not present in the image_map that seems the most clearly visible from
what I've found. One of the things I was going to do though is
increase the sizes for the overall world ones (in the zoom views they
are scaled down btw) because there's a few that are pretty obscure
since they are near edges of the planet. Jpeg further reduces their
visibility. Which is the problem basically, primary colors dissolve a
lot, and green blue or yellow would blend into the colors already
there leaving magenta as a possibility but think I tried that too long
ago and it blends in at certain places too. White or black alone (or
any plain color dot) can also be difficult to see right if in a
certain place. Another problem is the media atmosphere since it gets
hazy toward edges.
I might try to go back to little spotlights shone upon each position
but that tends to mean lowering the brightness of the rest of it.
Anyway, I'll be thinking some more and trying a few things out. Also
that country idea.
Bob
smellenbergh <sme### [at] skynetbe> wrote in message
news:1dy### [at] dialup146leuvenskynetbe...
> Hi,
>
> The Pov-world population is growing. Soon some countries will be
hidden
> under the markers :-)
>
> Maybe you could use coloured markers for each country. You really
don't
> need that many different colours so that no two neighbouring
countries
> have the same coloured markers. Then you could actually see how many
> users live in Belgium, the Netherlands or Luxemburg. Now it is one
> cluster.
>
> Also, linking the marks to counties might allow for corrections per
> country. If for instance a user of Christmas Island - is there
one? - is
> getting wet feet, you could place him back on land, without having
to
> correct the rest of the world.
>
> Smellenbergh
> --
> e-mail:sme### [at] skynetbe
>
> http://users.skynet.be/smellenbergh
>
> >Bob Hughes <inv### [at] aolcom> wrote:
>
> > The World Map of Pov-Ray Users has never had better accuracy, I
> > discovered a flaw in the markers which caused them to be elevated
> > above the globe slightly and at oblique viewing angles this
created a
> > position offset (thanks Antti!). To summarize, they were once
more
> > spherical and then had later been flattened out, this left their
> > centers hovering. It wasn't so noticeable before the "zoom"
views.
> > Plus there has been refinements made on a couple locations as
well.
> > Enough said. Check it out again everyone, if you will. If you are
> > near a edge of the "world" you may be surprised at the difference
from
> > previous maps.
> >
> > http://members.aol.com/wrld0rigin/povwrldjpg.htm
> >
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From what I've seen no one seems to have made a truly complete (or
nearly so)database of world cities/towns which also outputs Lat/Lon.
But I continue to wade through the masses of websites myself. Will
keep you in mind should I stumble upon anything.
Bob
Lutz Kretzschmar <lut### [at] stmuccom> wrote in message
news:37df8600.39017033@194.174.214.110...
> Hi Alexander Enzmann, you recently wrote in povray.general:
>
> > You might take a look at Home Planet ...
> Yes, I checked the website, but it didn't lookl like it could
extract
> the cities....
>
> - Lutz
> email : lut### [at] stmuccom
> Web : http://www.stmuc.com/moray
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Lutz Kretzschmar wrote:
>
> Hi Alexander Enzmann, you recently wrote in povray.general:
>
> > You might take a look at Home Planet ...
> Yes, I checked the website, but it didn't lookl like it could extract
> the cities....
They are in the file sitename.txt, around 1400 cities referenced to
lat/long. I'll zip and email separately.
Xander
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On Tue, 14 Sep 1999 15:56:09 -0500, "Bob Hughes" <inv### [at] aolcom>
wrote:
>I've been doing some thinking (only thinking) about changing the
>markers, however country-based colors was not one of the thoughts, so
>thanks for suggesting it whether I do that or not.
[snip]
Another option, of course, being to colour by quantity. If you can
work out how many dots are near enough to each other to obscure one or
more, have a different colour/shape to signify 1,2-5,7-10 etc.
Overkill ahoy!
Cheers,
Cliff Bowman
Why not pay my 3D Dr Who site a visit at http://www.who3d.cwc.net/
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Ah, but that is what the zoomed in views are for, so I don't have to
try and do that : ) Anything is worthy of consideration though so
thanks for sharing that thought.
Bob
Cliff Bowman <c.b### [at] cwcomnet> wrote in message
news:37dfa0ff.178476677@news.povray.org...
> On Tue, 14 Sep 1999 15:56:09 -0500, "Bob Hughes" <inv### [at] aolcom>
> wrote:
>
> >I've been doing some thinking (only thinking) about changing the
> >markers, however country-based colors was not one of the thoughts,
so
> >thanks for suggesting it whether I do that or not.
> [snip]
>
> Another option, of course, being to colour by quantity. If you can
> work out how many dots are near enough to each other to obscure one
or
> more, have a different colour/shape to signify 1,2-5,7-10 etc.
>
> Overkill ahoy!
>
>
> Cheers,
>
> Cliff Bowman
> Why not pay my 3D Dr Who site a visit at http://www.who3d.cwc.net/
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On Wed, 15 Sep 1999 17:04:02 -0500, Bob Hughes wrote:
>Ah, but that is what the zoomed in views are for, so I don't have to
>try and do that : ) Anything is worthy of consideration though so
>thanks for sharing that thought.
I know this isn't exactly on the current thread of discussion, but
I don't appear to be on the map. I'm in the list, but the closest
dot to my location appears to be somewhere in Ohio. On-topic for
the current discussion, though - 'twould be nice if the outlines of
countries and perhaps states and provinces (in the bigger countries)
were overlaid on the map, something like what you see with weather
maps.
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Yep, way ahead of you on that political boundry idea. Well, not WAY
ahead but I had thought of trying to get a boundary overlay on there
if I can get a good map of that to work into it okay.
Btw, you have email from me if you haven't seen it already. Put
bluntly the start of those coordinate additions was pretty rough hewn
during the time I was adding people and places off of the newsgroup
messages and via email. Not until the web page form was it going
nearly smooth and now it's mostly a matter of whether my email works
okay and people get their data done right. It's just a matter of copy
& paste anymore, less the occasional normal email asking to be added.
99% accuracy is the only truly acheivable goal I think and I may have
a ways to go yet.
Bob
Ron Parker <par### [at] fwicom> wrote in message
news:37e0ef89@news.povray.org...
> On Wed, 15 Sep 1999 17:04:02 -0500, Bob Hughes wrote:
> >Ah, but that is what the zoomed in views are for, so I don't have
to
> >try and do that : ) Anything is worthy of consideration though so
> >thanks for sharing that thought.
>
> I know this isn't exactly on the current thread of discussion, but
> I don't appear to be on the map. I'm in the list, but the closest
> dot to my location appears to be somewhere in Ohio. On-topic for
> the current discussion, though - 'twould be nice if the outlines of
> countries and perhaps states and provinces (in the bigger countries)
> were overlaid on the map, something like what you see with weather
> maps.
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