Re: [OSM-dev] The wiki defines the database (was: relations)

2008-11-05 Thread Sebastian Spaeth
Erik Johansson wrote:
 Real mappers don't document; their tags are enough.  Wannabe mappers
 read documentation and follow templates. So how should you become a
 mapper if there is no documentation. There is a lack of people who are
 willing to write something on the wiki, not too many.
 there have been occasions when real mappers have documented their
 tags on the wiki, only to have the wiki pages overwritten by someone
 else's better ideas. maybe this puts some people off?
 
 Yes that is very cumbersome but how often does this happen, and does
 it really warrant that flippant attitude? Having a better way to
 handle multiple meanings of tags might help.

Often enough that I have stopped caring about what the wiki says.

The wiki were a great help if it listed commonly used tags together with
a list of applications that are using/understanding those tags. (or
probably describing that a certain app actively refuses to 'understand'
a certain tag). That would allow people to help making their decision on
whether they want to tag something as highway=culdesac or add a
noexit=yes (a completely unneeded tag :-)).

But this is not how the wiki is used. I have been tagging stuff since
quite some time now and I refuse to have people telling me now that
highway=cycleway;foot=yes is not valid anymore because its deprecated.

If the wiki listed the formats of speed measurements that apps
understand together with the frequency of actual format used, that would
help much more than an eternal discussion on whether speed:mph is better
than speed=30mph or whether everyone is/should be using metric
measurement anyway.

spaetz

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Re: [OSM-dev] The wiki defines the database (was: relations)

2008-11-05 Thread Andy Allan
On Wed, Nov 5, 2008 at 8:15 AM, Sebastian Spaeth [EMAIL PROTECTED] wrote:
 Erik Johansson wrote:
 Real mappers don't document; their tags are enough.  Wannabe mappers
 read documentation and follow templates. So how should you become a
 mapper if there is no documentation. There is a lack of people who are
 willing to write something on the wiki, not too many.
 there have been occasions when real mappers have documented their
 tags on the wiki, only to have the wiki pages overwritten by someone
 else's better ideas. maybe this puts some people off?

 Yes that is very cumbersome but how often does this happen, and does
 it really warrant that flippant attitude? Having a better way to
 handle multiple meanings of tags might help.

 Often enough that I have stopped caring about what the wiki says.

I've been hit by it a few times, and one specific case that annoys me
greatly. I invented a tag by using it (OMG!!), and then even rendering
it. Other people started using it. Then the wiki-types made up their
own alternative tag without making any reference to the existing ones
that were in the db and being rendered. So I realised it was about
time to document the already-in-use, already-rendered tag, which
triggered a virulent campaign by the wiki-types to repeatedly delete
the information that I had put up, ignore the evidence from the
database, claim voting was the be-all and end-all, and label tags that
are (still) in use and (still) rendered as deprecated.

I've given up almost all hope with the wiki, since there appears to be
no place on it for honest documentation, unless you play by certain
rules which are incompatible with the founding spirit of OSM. So there
are now many features on the cycle map that are completely
undocumented - I'm not stirring the hornets nest any more, I'd rather
concentrate on productive stuff.

Suggestions welcome.

Cheers,
Andy

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Re: [OSM-dev] The wiki defines the database (was: relations)

2008-11-05 Thread Sascha Silbe

On Wed, Nov 05, 2008 at 11:57:07AM +, Andy Allan wrote:


[...], which
triggered a virulent campaign by the wiki-types to repeatedly delete
the information that I had put up, [...]

Who exactly are the wiki-types you mention?
IMO there shouldn't be the wiki-types and the mappers, those should 
be one and the same. Without defining what tags (=syntax) mean 
(=semantic), it's hard to use them properly.
From reading the discussions regularly popping up on the mailing lists, 
I'm getting the impression there's a minority on the wiki disturbing the 
work of others. That's vandalism to me, nothing more and nothing less.
So what about trying to get this minority to stop impeding our work, 
instead of splitting ourselves into the wiki-types (those defining the 
semantics) and the mappers (those using the syntax to enter data into 
the database)?


Of course there are other ways of communicating the semantics of the 
tags you use (e.g. mailing lists), but the wiki is currently the best we 
have in terms of successful information retrieval.


CU Sascha

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Re: [OSM-dev] The wiki defines the database (was: relations)

2008-11-05 Thread Richard Fairhurst
Andy Allan wrote:

 I've been hit by it a few times, and one specific case that annoys me
 greatly. I invented a tag by using it (OMG!!), and then even rendering
 it. Other people started using it. Then the wiki-types made up their
 own alternative tag without making any reference to the existing ones
 that were in the db and being rendered. So I realised it was about
 time to document the already-in-use, already-rendered tag, which
 triggered a virulent campaign by the wiki-types to repeatedly delete
 the information that I had put up, ignore the evidence from the
 database, claim voting was the be-all and end-all, and label tags that
 are (still) in use and (still) rendered as deprecated.

If I read it rightly, too, Andy's usage for a foot-and-bike crossing was

   crossing=toucan

which is what they're called in the UK (because two can cross) -  
concise and certainly no more idiomatic than trunk, say.

Whereas the Official Wiki Way Of Doing Things is, apparently,

   highway=traffic_signals
   crossing=traffic_signals
   bicycle=yes
   segregated=no
   crossing_ref=toucan

Five tags. Utterly insane. The only way for human beings to make sense  
of that is for the editors to offer shortcuts, and do I see the voting  
guys even submitting one teeny patch to the simple, public-svn text  
file  
(http://trac.openstreetmap.org/browser/sites/rails_port/config/potlatch/presets.txt)
 that would do this in Potlatch? Er,  
no.

cheers
Richard


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Re: [OSM-dev] The wiki defines the database (was: relations)

2008-11-05 Thread OJ W
On Wed, Nov 5, 2008 at 1:35 AM, Erik Johansson [EMAIL PROTECTED] wrote:
 On Wed, Nov 5, 2008 at 12:26 AM, Matt Amos [EMAIL PROTECTED] wrote:
 there have been occasions when real mappers have documented their
 tags on the wiki, only to have the wiki pages overwritten by someone
 else's better ideas. maybe this puts some people off?

 Yes that is very cumbersome but how often does this happen

Several hundred times recently?

http://wiki.openstreetmap.org/index.php?title=Special:Contributionslimit=500target=Circeus

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Re: [OSM-dev] The wiki defines the database (was: relations)

2008-11-05 Thread Andy Allan
On Wed, Nov 5, 2008 at 12:28 PM, Sascha Silbe
[EMAIL PROTECTED] wrote:
 On Wed, Nov 05, 2008 at 11:57:07AM +, Andy Allan wrote:

 [...], which
 triggered a virulent campaign by the wiki-types to repeatedly delete
 the information that I had put up, [...]

 Who exactly are the wiki-types you mention?

I don't want to make it personal or pick out individuals. It's pretty
plain from the wiki-history who was doing what in the particular case
I was referring to - but the point is way more general than just my
one little illustration which is why I haven't even linked to it.

 IMO there shouldn't be the wiki-types and the mappers, those should be
 one and the same. Without defining what tags (=syntax) mean (=semantic),
 it's hard to use them properly.

I agree with both your statements.

 From reading the discussions regularly popping up on the mailing lists, I'm
 getting the impression there's a minority on the wiki disturbing the work of
 others. That's vandalism to me, nothing more and nothing less.

I wouldn't necessarily say it's a minority on the wiki, and that's one
of the problems. It's a fairly large group of people now, probably
outnumbering all the people who write editors, rendering software, and
other stuff combined. It's a function of groupthink - people on the
wiki see the way the wiki-fiddlers work and accept it as the norm.
Battle-scarred veterans who have tried to straighten things out spend
their time working elsewhere - by their very nature. How could the
author of an OSM editor or renderer out-wiki a group of dedicated
wiki-fiddlers? We have other stuff that simply doesn't get done if we
aren't doing it.

And for vandalism I would simply say (deeply) misguided - I don't
think anyone appreciates their hard work being called vandalism,
misguided or not.

 So what about trying to get this minority to stop impeding our work, instead
 of splitting ourselves into the wiki-types (those defining the semantics)
 and the mappers (those using the syntax to enter data into the database)?

As they say, Good luck with that.

 Of course there are other ways of communicating the semantics of the tags
 you use (e.g. mailing lists), but the wiki is currently the best we have in
 terms of successful information retrieval.

Absolutely. I've occasionally flirted with other ideas - bits on the
opencyclemap.org website that are under strict editorial control, for
example, documenting how things actually work and safe from uninformed
opinions. But that is firstly time I could spend making the cycle map
even better, and also not really in the spirit of community building.
I'd rather that I could document stuff on the OSM wiki, but I've been
there before and it wasn't a pleasant experience.

Cheers,
Andy

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Re: [OSM-dev] The wiki defines the database

2008-11-05 Thread Ben Supnik
Hi Y'all,

I am a little bit concerned about what some of you all are saying, in 
particular its effect on new users.  Having been working on OSM now for 
about 3 days (writing Wiki articles, processing map extracts, and fixing 
a few roads in my neighborhood for fun), this is my perspective as 
someone with no clue:

Having a schism between the Wiki and ground reality (meaning what is 
in the database and what the tools promote) is problematic for a new 
user.  As a new user, I went to the Wiki to look for answers to questions...

- What tags do I need to use.
- What is the best way to tag.
- What does this existing tag mean.

As a new user, my source for answers is going to be:

1. What the tools do/make easy.  If potlatch gave me a red flag and said 
you must add tag X before continuing, I would have done it. :-)

2. What is in the map _locally_ (in the spatial sense).

3. What the Wiki says.

4. What is in the map globally.

To put it simply: to me it seems crazy to not have emerging data 
standards from the map documented on the Wiki.

In an attempt to provide a useful suggestion...

Perhaps there could be integration between the Wiki and some of the DB 
analysis tools (like the tag-finders) and the editing tools?

My thought is that if the Wiki engine could use the same preset format 
as JOSM or Potlatch, then the Wiki could automatically indicate whether 
a tag is going to be part of an editor, which to me is a very important 
endorsement of a tag (and provides a more sane place to create a 
schema, if I dare use the word).  Similarly, if the Wiki page for a 
tag included its usage statistics, then a user could easily see that 
tag=fluffernut has 8 pages of discussion but has been used only once.

In other words, tie the Wiki to ground reality by feeding it from the 
toolset, rather than accept that the Wiki is going to be an alternate 
reality.

As a new user, I think I only want a few things, and they seem like 
reasonable things to want (to me):

- Answers to the question What tag do I use.
- Only one possible choice of tag.
- The answer to be in a place that's easy to find.

If a command-line tool had a thousand switches and the man page 
documented a whole bunch of them wrong, we'd all go what's up with 
that, let's fix the man page!

Okay - sorry, I'm done...I'll go finish my coffee.

cheers
Ben




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Re: [OSM-dev] source code for josm ewmsplugin?

2008-11-05 Thread Frederik Ramm
Hi,

Timo Juhani Lindfors wrote:
 where's the source code of ewmsplugin.jar? I see
 svn.openstreetmap.org/applications/editors/josm/plugins/wmsplugin
 but grep -r ewms ../ finds nothing.

Yes that's misleading; the wmsplugin source is actually what makes the 
ewmsplugin! We just didn't remove the old wmsplugin binary yet so that 
the new one can be thoroughly tested, eventually the ewmsplugin will be 
renamed wmsplugin.

Bye
Frederik

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Re: [OSM-dev] The wiki defines the database

2008-11-05 Thread Tom Hughes
Ben Supnik wrote:

 As a new user, my source for answers is going to be:
 
 1. What the tools do/make easy.  If potlatch gave me a red flag and said 
 you must add tag X before continuing, I would have done it. :-)
 
 2. What is in the map _locally_ (in the spatial sense).
 
 3. What the Wiki says.
 
 4. What is in the map globally.
 
 To put it simply: to me it seems crazy to not have emerging data 
 standards from the map documented on the Wiki.

I don't think anybody disagrees with that - the problem comes when the 
standards are created on the wiki rather than emerging from the map and 
being documented on the wiki.

Tom

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Re: [OSM-dev] The wiki defines the database

2008-11-05 Thread Matthias Julius
Erik Johansson [EMAIL PROTECTED] writes:

 I can agree that people changing already used standards on the wiki
 can be interesting. But if someone documents something on the wiki and
 says that is a standard is that really a problem, as long as there is
 nothing there at the moment?

 Just one occurrence in the database with a good doc is 10 times better
 than 1400 tags in the db and no doc.

Yes, especially if the key/value is not 100% self-explanatory to every
potencial user.  This is the only way to give other people a chance to
find it (besides asking someone who knows about it).  It is a waste of
recources if people are inventing new tags for the same thing just
because they didn't know about the existing one.

Matthias

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Re: [OSM-dev] source code for josm ewmsplugin?

2008-11-05 Thread Timo Juhani Lindfors
Frederik Ramm [EMAIL PROTECTED] writes:
 Yes that's misleading; the wmsplugin source is actually what makes the
 ewmsplugin! We just didn't remove the old wmsplugin binary yet so that

Oh! Where are the scripts I need to create ewmsplugin.jar from those
sources? I think if I run ant I will get wmsplugin.jar.




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Re: [OSM-dev] source code for josm ewmsplugin?

2008-11-05 Thread Frederik Ramm
Hi,

Timo Juhani Lindfors wrote:
 Oh! Where are the scripts I need to create ewmsplugin.jar from those
 sources? I think if I run ant I will get wmsplugin.jar.

Yes, and currently whoever checks in the ewmsplugin.jar does a rename 
beforehand.

Bye
Frederik

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Re: [OSM-dev] source code for josm ewmsplugin?

2008-11-05 Thread Timo Juhani Lindfors
Frederik Ramm [EMAIL PROTECTED] writes:
 Yes, and currently whoever checks in the ewmsplugin.jar does a rename
 beforehand.

Thanks for confirming this. So the binary ewmsplugin.jar in SVN has
been compiled from current head of plugins/wmsplugin/ and the binary
wmsplugin.jar in SVN has been compiled from some older revision of
that directory? I have svn account so I could add a note that explains
this to the directory so that other people can find it when they grep
-r ewmsplugin.

http://wiki.openstreetmap.org/index.php/Accounts#SVN_access_.28OSM_software.29
says that JOSM is maintained in a separate SVN repository -- is this
also out-of-date information?





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Re: [OSM-dev] Relation bounding boxes

2008-11-05 Thread Frederik Ramm
Hi,

Matt Amos wrote:
 what is the bounding box of a relation?

I like your idea 1 best:

 1) adding or removing nodes or ways from a relation causes them to be
 added to the changeset bounding box. adding a relation member or
 changing tag values causes all node and way members to be added to the
 bounding box. this is similar to how the map call does things and is
 reasonable on the assumption that adding or removing members doesn't
 materially change the rest of the relation.

One could of course put in arbitrary amounts of magic and handle this 
differently based on the type of relation but I don't think we want to 
go there; the API has never looked at the semantics of data until now 
and it should probably stay that way.

People will use bounding boxes to monitor changes in an area. The 
question we must ask is: What constitutes a change to an area, and on 
which side do we want to err?

We'll never be perfect; there will alway be things that change the map 
in an area but are not noticed by simple bbox tracking. (Example: 
Imagine you're tracking a bounding box sized 5x5 miles on an insland. 
Someone breaks the coastline just outside your bounding box: Your area 
gets flooded without having changed.)

Your concept adding or removing nodes or ways from a relation causes 
them to be added to the changeset bounding box boils down to viewing 
relation membership as a quality of the way/node, much like Potlatch 
presents it to the viewer. As you correctly say, this will only cause 
trouble if adding something to a relation in location A will somehow 
change the quality of another relation member in location B. I am 
struggling to find an example of that; it would be far fetched at the 
very least.

I suggest that we make it possible for the client to *extend* (not 
reduce!) the bounding box, perhaps through a POST request to the 
changeset object. If we have that functionality and if we should ever 
encounter relation types where the above is true, then a well-behaved 
editor could use this method to increase the bbox in that special case.

The bit adding a relation member or changing tag values causes all node 
and way members to be added to the bounding box sounds sensible too.

Make sure that your code does not blindly assume each relation to have a 
bounding box though; it is possible to have relations with ONLY tags and 
no members. This is rarely used but there are use cases for it, e.g. 
creating a placeholder member of another relation or complex tagging. 
It's not supported by any clients but it might come in handy one day.

 2) any change to a relation causes all its members' bounding boxes to
 be added to the changeset, recursively. this might be the case if we
 consider tag values to cascade onto members recursively (superways).

One-deep superways are already adequately covered by your proposal 1; 
I'd say we tackle nested relations once they start to get widely used. 
It is not something that desperately needs to be done now, it would not 
require waiting for 0.7 should we decide to change the logic some time 
later.

Here, too, we could count on client support. Remember that the 
server-side bounding box code is only there as some sort of minimum that 
works even for clients that don't know about bounding boxes. A 
cooperative client could have detailed information about what kinds of 
relations it works with and whether or not a change in a certain 
relation warrants the extension of the bounding box.

I'm for erring on the side of too small bounding box rather than 
making them too large, and then allowing the client to increase it.

Bye
Frederik

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[OSM-dev] Last Login

2008-11-05 Thread Frederik Ramm
Hi,

on talk-de someone just asked whether we could have some sort of 
last login for OSM users, so you get a chance to see if they're still 
active.

If that's not available already, a method for querying changesets by 
user and time would be great. Even if we don't expose it on the API we 
could still list it on the user detail web page (last modification by 
this user: ...).

I reckon it is far cheaper in database resource terms to make such a 
query against the changeset table than making it against the 
node/way/relation tables which would currently be required to get the 
same info.

Bye
Frederik

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Re: [OSM-dev] The wiki defines the database

2008-11-05 Thread Frederik Ramm
Hi,

[EMAIL PROTECTED] wrote:
 The genius of a good crowd sourced project (and OSM is very good) is 
 that the data being sourced AND the encoding model itself are BOTH crowd 
 sourced.

It is true that not every crowd-sourced project has this; some just have 
a fixed structure and expect contributors to fill that in.

There's no clear line between the two however; you can start out with a 
free-for-all crowdsourced project and then at first have informal rules, 
then watch these become more formal, with the organisation drifting from 
a do-ocratic to a democratic structure, up to a point where the 
structure is really fixed and the crowdsourcing process limited to the data.

(Of course the structure is not fixed as in cannot be changed, but it 
is just as fixed as a structure given by an organisation, such as Google 
with their map maker - this can change to, and might even change in 
response to user requests, but still it is fixed as opposed to 
crowdsourced.)

Out of interest, I'd like to know where Wikipedia currently is on that 
scale, and what their internal discussions about this are like. As a 
Wikipedia user I see that many articles are drifting towards a fixed 
structure, for example; can I still create articles that don't use the 
structure or will there immediately be a flurry of people telling me 
what I did wrong, where I did not adhere to rules, and how things should 
be done differently because this has been decided then-and-then by 
so-and-so?

The interesting question is, can you sustainably uphold the 
crowdsourcing principle on both fronts, or will you sooner or later gave 
to give in to calls for democratic structures, votes, elections and so 
on because it is the least evil?

I tend to think that wherever you have to mediate between conflicting 
interests you will (at some point) just give up and implement democracy. 
(Can't agree? But of course we need to all do it the same way. Ok let's 
vote and whoever loses has to do what the winners say.) Many, many 
people in OSM believe that this cannot be avoided and that we might as 
well do democracy right away. Many also seem to be unwilling or unable 
to question whether democracy is really best for everything.

However, I have the hope that we might just manage to *avoid* 
conflicting interests altogether, or at least to a very large degree, by 
being all things to all people. If we manage to keep the database open 
for as many things, ideas, and concepts as possible, then instead of 
fighting (or voting) over the right (one true) way to arrange things 
in the data base, people could just extract those things they want in 
the form they want them. The same could be done, and is done, in other 
areas in the project: Don't like the editor? Use another; don't like the 
map? Make one yourself, etc. - Still there are areas where we're more 
centralistic than necessary, leading to discussions about the one true 
way, but wherever we can get out of that and say have it both ways, 
that's a victory for freedom in my opinion.

The belief that there can only be one true way causes a lot of grief 
on many levels around the world. I'm sure there really are areas where 
you have to do something one way or another. But until now, OSM has 
worked quite well without having one true way.

Bye
Frederik

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[OSM-dev] osm2pgsql make failing

2008-11-05 Thread Richard Chirgwin
Hi from a new user.

osm2pgsql is failing on make:
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to
[EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to
[EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
/usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'

What dependency am I missing?

Thanks,
Richard

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Re: [OSM-dev] osm2pgsql make failing

2008-11-05 Thread Stephan Plepelits
On Thu, Nov 06, 2008 at 06:21:47PM +1100, Richard Chirgwin wrote:
 Hi from a new user.
 
 osm2pgsql is failing on make:
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to
 [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to
 [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 /usr/lib/libpq.so: undefined reference to [EMAIL PROTECTED]'
 
 What dependency am I missing?
# apt-cache search krb5
- libkrb5-dev - Headers and development libraries for MIT Kerberos

(So there are more hits, but this is most likely, I would assume)

greetings,
Stephan
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,-.
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[josm-dev] help for building JOSM with Eclipse

2008-11-05 Thread G. Allegri
Hello everyone.
Could anyone give me a help for setting up the JOSM development
environment in Eclipse?
I've right checked out the source code, and then I've simply created
an Eclipse project using the JOSM root (with source, test, images,
etc., subfolders), as indicated in [1].
The build process raises about a hundred of errors inside the test
classes. I've tried to launch it anyway, but I receive this:

java.lang.NullPointerException: /images/logo.png not found
at org.openstreetmap.josm.tools.ImageProvider.get(ImageProvider.java:62)
at 
org.openstreetmap.josm.tools.ImageProvider.get(ImageProvider.java:170)
at org.openstreetmap.josm.gui.SplashScreen.init(SplashScreen.java:54)
at 
org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:124)

It seems it can't find the images folder...

What's the best way to set all up?
Thanks,
Giovanni

[1] http://josm.openstreetmap.de/wiki/InstallNotes

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Re: [josm-dev] help for building JOSM with Eclipse

2008-11-05 Thread Frederik Ramm
Hi,

G. Allegri wrote:
 Could anyone give me a help for setting up the JOSM development
 environment in Eclipse?

Here's a screenshot of my setup. Does it help?

http://www.remote.org/frederik/tmp/eclipse.png

Bye
Frederik

-- 
Frederik Ramm  ##  eMail [EMAIL PROTECTED]  ##  N49°00'09 E008°23'33

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