Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Martin Spott
Martin Spott wrote:
> Jon Stockill wrote:

>> Is the map definition file available anywhere so I can see what layers 
>> you have defined?
> 
>   http://mapserver.flightgear.org/landcover.map
> 
> This is still work in progress - as always  ;-)  - because I didn't
> finish adding all the VMAP1-layers.

Ok, I think the file is now complete in the sense that it contains all
layers where the (still unchanged) landcover selection retrieves at
least one object from VMap1,

Martin.
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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Martin Spott
Martin Spott wrote:

> There will be. Currently I'm waiting for someone giving the ok to move
> my DB to a more powerful machine but I think people can step upon the
> plate earlier. This page for example:
> 
>   http://www.mapability.com/info/vmap1_download.html
> 
> mentions the bounding boxes of the respective VMap1 datasets. Before
> cutting out VMap0 we'll have to know if lat/lon of these boxes is
> really accurate or not.

Shapefiles are available now, each of them contains the complete VMap1-
coverage of the respective layer. Feel free to have a look at them if
you like:

  ftp://ftp.uni-duisburg.de/FlightGear/TGShapes/*_vmap1.tar.bz2

Martin.
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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Jon Stockill
Martin Spott wrote:

> "It should only be used by developers that have some knowledge of
> JavaScript [...]"

I'm not a developer, I certainly don't know javascript It works for 
me :-)


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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Martin Spott
Jon Stockill wrote:
> Martin Spott wrote:

>> 1.) The mapserver relies on JavaScript - and I've never done that
>> before. It would be nice if someone could completely eliminate the
>> need for this disturbing "Browse map" checkbox, overall improvement
>> is very much welcomed.
> 
> I can highly recommend "ka-Map" - it'll give you a google maps style 
> interface to mapserver. http://ka-map.maptools.org/

"It should only be used by developers that have some knowledge of
JavaScript [...]"

  :-)

Martin.
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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Martin Spott
Jon Stockill wrote:
> Martin Spott wrote:

>> 1.) The mapserver relies on JavaScript - and I've never done that
>> before. It would be nice if someone could completely eliminate the
>> need for this disturbing "Browse map" checkbox, overall improvement
>> is very much welcomed.
> 
> I can highly recommend "ka-Map" - it'll give you a google maps style 
> interface to mapserver. http://ka-map.maptools.org/

Thanks, I'll have a look at it.

>> 2.) I'd wish someone would create an RGB colour schema for the
>> representation of the different layers. Alone for all the VMAP0
>> layers we need a large set of different colours if we want to tell
>> betwen the layers - not to speak of a combined presentation of
>> VMAP0 and VMAP1 in a single picture 
> 
> Is the map definition file available anywhere so I can see what layers 
> you have defined?

  http://mapserver.flightgear.org/landcover.map

This is still work in progress - as always  ;-)  - because I didn't
finish adding all the VMAP1-layers.

Cheers,
Martin.
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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Jon Stockill
Martin Spott wrote:
> Jon Stockill wrote:
> 
>> Is there any way people can help with this?
> 
> As I already wrote in the previous posting 
> 
> Aside from that I'd be very happy if someone would beautify the visual
> apperance of the current Mapserver interface.
> 
> 1.) The mapserver relies on JavaScript - and I've never done that
> before. It would be nice if someone could completely eliminate the
> need for this disturbing "Browse map" checkbox, overall improvement
> is very much welcomed.

I can highly recommend "ka-Map" - it'll give you a google maps style 
interface to mapserver. http://ka-map.maptools.org/

> 2.) I'd wish someone would create an RGB colour schema for the
> representation of the different layers. Alone for all the VMAP0
> layers we need a large set of different colours if we want to tell
> betwen the layers - not to speak of a combined presentation of
> VMAP0 and VMAP1 in a single picture 

Is the map definition file available anywhere so I can see what layers 
you have defined?

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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Martin Spott
Jon Stockill wrote:

> Is there any way people can help with this?

As I already wrote in the previous posting 

Aside from that I'd be very happy if someone would beautify the visual
apperance of the current Mapserver interface.

1.) The mapserver relies on JavaScript - and I've never done that
before. It would be nice if someone could completely eliminate the
need for this disturbing "Browse map" checkbox, overall improvement
is very much welcomed.
2.) I'd wish someone would create an RGB colour schema for the
representation of the different layers. Alone for all the VMAP0
layers we need a large set of different colours if we want to tell
betwen the layers - not to speak of a combined presentation of
VMAP0 and VMAP1 in a single picture 

Please don't hesitate to contact me if you'd like to work on one of
these. Cheers,

Martin.
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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Martin Spott
Jon Stockill wrote:
> Martin Spott wrote:

> I discovered this the other day - seems like it may be a useful resource 
> for keeping track of this type of project:
> 
> http://slashgeo.org/

Aye - this really is a valuable resource. Are they somehow affiliated
with Slashdot or did they just pick a part of the name ? I should
monitor it from time to time just to see if someone already announces
what we're still preparing for  ;-)

> Yes - I've seen just how bad vmap0 roads are in my local area - trying 
> to match edges between datasets would be a complete nightmare.

But in the end someone has to do it - no chance of circumvention unless
we find an clever algorithm that does the job for us.

>> We are already preparing such a merge but I expect the process to take
>> several, not to say numerous months until we're ready to offer the
>> first results.
> 
> Is there any way people can help with this?

There will be. Currently I'm waiting for someone giving the ok to move
my DB to a more powerful machine but I think people can step upon the
plate earlier. This page for example:

  http://www.mapability.com/info/vmap1_download.html

mentions the bounding boxes of the respective VMap1 datasets. Before
cutting out VMap0 we'll have to know if lat/lon of these boxes is
really accurate or not. This could be done either by finding a reliable
source which tells us "yes, they _are_ really precise" or by loading
data files (shapefiles) into your preferred GIS viewer and determine if
the roads and rivers that for example intersect the border between the
US and Canada really end at the specified latitude.

Cheers,
Martin.
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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Jon Stockill
Martin Spott wrote:
> Jon Stockill wrote:
>> Josh Babcock wrote:
> 
>>> I say we issue everyone a GPS unit and start taking out own data :)
>> It's being done already: http://www.free-map.org.uk/
> 
> Well, "Freemap data is from now on being contributed to the
> OpenStreetMap database." I must admit that I've never seen "Freemap"
> before and I'm really happy to see they did this move in order to
> combine their forces.

The combination of the two is certainly a good thing. The free-map 
author is already working on a new renderer for openstreetmap, and the 
amount of data in openstreetmap is growing quite quickly.

I discovered this the other day - seems like it may be a useful resource 
for keeping track of this type of project:

http://slashgeo.org/

> Please take into account that merging such data of different sources
> and resolutions is _very_ time consuming work because you almost always
> have to adjust the boundaries manually. For example we have roads in
> the high resolution dataset which are placed almost correctly and the
> same road in the low resolution dataset has an offset of several
> hundred meters 

Yes - I've seen just how bad vmap0 roads are in my local area - trying 
to match edges between datasets would be a complete nightmare.

> We are already preparing such a merge but I expect the process to take
> several, not to say numerous months until we're ready to offer the
> first results.

Is there any way people can help with this?

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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-15 Thread Martin Spott
Jon Stockill wrote:
> Josh Babcock wrote:

>> I say we issue everyone a GPS unit and start taking out own data :)
> 
> It's being done already: http://www.free-map.org.uk/

Well, "Freemap data is from now on being contributed to the
OpenStreetMap database." I must admit that I've never seen "Freemap"
before and I'm really happy to see they did this move in order to
combine their forces.

Please take into account that merging such data of different sources
and resolutions is _very_ time consuming work because you almost always
have to adjust the boundaries manually. For example we have roads in
the high resolution dataset which are placed almost correctly and the
same road in the low resolution dataset has an offset of several
hundred meters 

We are already preparing such a merge but I expect the process to take
several, not to say numerous months until we're ready to offer the
first results.

Cheers,
Martin.
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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-14 Thread Jon Stockill
Josh Babcock wrote:
> 
> I say we issue everyone a GPS unit and start taking out own data :)

It's being done already: http://www.free-map.org.uk/

Jon


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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-14 Thread Josh Babcock


I say we issue everyone a GPS unit and start taking out own data :)

Josh


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Re: [Flightgear-devel] VMAP1 in Landcover-DB

2006-06-14 Thread Arnt Karlsen
On Wed, 14 Jun 2006 12:58:09 + (UTC), Martin wrote in message 
<[EMAIL PROTECTED]>:

> Hello,
> the VMAP1 dataset makes a nice difference for the Bay Area. Go to:
> 
>   http://mapserver.flightgear.org/
> 
> enter ICAO KPAO, and then replace several layers in the selection:
> 
> rivers_stream -> rivers_vmap1
> rivers_intermittentstream -> intermittentrivers_vmap1
> roads_road -> roads_vmap1
> cities_urban -> cities_vmap1
> 
>   add freeway_vmap1 if you like, Refresh and enjoy.
> I find it very interesting that the VMAP1 city areas match the GSHHS
> shoreline _much_ better than the VMAP0 cities do, like in SFO downtown
> or Treasure Island. It's a pity that the available VMAP1 covers only
> so little of the Earth (yes, I know why),

..one way we can go, is use VMAP1 or better where we can find it, 
and VMAP0 elsewhere, and "let the market" "and the electorate" 
put the heat on where it belongs, so we can "help them patriots show 
off their beautiful home town, instead of that ugly VMAP0 dump."  ;o)

-- 
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[Flightgear-devel] VMAP1 in Landcover-DB

2006-06-14 Thread Martin Spott
Hello,
the VMAP1 dataset makes a nice difference for the Bay Area. Go to:

  http://mapserver.flightgear.org/

enter ICAO KPAO, and then replace several layers in the selection:

rivers_stream -> rivers_vmap1
rivers_intermittentstream -> intermittentrivers_vmap1
roads_road -> roads_vmap1
cities_urban -> cities_vmap1

  add freeway_vmap1 if you like, Refresh and enjoy.
I find it very interesting that the VMAP1 city areas match the GSHHS
shoreline _much_ better than the VMAP0 cities do, like in SFO downtown
or Treasure Island. It's a pity that the available VMAP1 covers only so
little of the Earth (yes, I know why),

Martin.
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