Scale/zoom levels and tiling are essential for mapping servers, especially
if pretending on streaming transmission model. In case of a
vector/parametric data transmission service the scale levels’ generation
and the tiling of these, as a rule, is performed in quite a different way
compared to the
Hi. Reading Adam's Anomaly detection spec and Deric's comments I take the
liberty to make also some comments and some suggestions to Adam.
I assume you are using the anomaly notion as a polite synonym for errors.
As a political strategy this is fine but we should not close our eyes
regarding
As I can see this is a frequently discussed subject. The interest for the
subject is especially high when doing streaming based mapping. I am one of
these and doing the coastline-to-land conversion process frequently. So,
let me allow a few related notes.
If interested, you can find (and
Hi K. Krueger and all the others working with vector tiling and vector
rendering development and applications.
Are we doing something illegal?
Some well known large companies have got patent on more or less the same
subject: Vector tiling and client rendering of tiled vectors.
Look at these
Hi,
You may call it similar or almost overlapping or ... probably meaning
that two polygons, poly-lines or poly-line segments are so close to each
other that they, with a very high probability; represent the same
real-world object.
There is a huge number of such cases in OSM source data producing
Is there anyone out there having a suggestion, a model for a solution to
the following typical mapping/cartographic problem:
-Assume we have given two sets of area objects. For simplicity, let us
call them L1 (large lakes) and L2 (small lakes). Also, for simplicity,
let us use the topology area
There is an explicate invitation to comment the tool and the results in
the paper so, I take the liberty to do so and post some of the many
potential comments.
-That some thin, or small, area objects/portions spontaneously disappear
when zooming out (scaling down) is natural and as a rule a
I would like to suggest a bit more focus on the OSM source data related
documentation and data quality. The many loose/fuzzy definitions (if they
are definitions at all) allow wide freedom of interpretations. In turn,
these interpretations are causing many (but really many) logical errors.
As a
Hi,
during the latest discussion-wave related to the default rendering stiles
someone (I think Peter K.) used the notion reference map for the OSM
Slippymap. If this is so, I need some help to understand - in what sense is
this map the OSM reference map?
1. Is this the most correct map (the
The subject of this compact overview is complex and complicated stuff. With
all details it would be enough for a book. Besides, it comes long before
any coding. Also, the subject is probably more in solution architecture
than in the application area. Therefor it might be of interest only for a
Suggesting a correct and unified names to editors before their upload is
just fine.
But if you already have access to a selected name from an editor then
probably you have access to the selected
tags as well. So, the name in conjunction with the tags, as Serge suggested,
could be used for
I am not sure that I properly understand whether and how change detection
happens in OSM source data and related applications (mapping systems like
Slippymap layers, tiling services and so on) . I was through many related
articles in OSM WIKI but the help was moderate. Yet, as I understand,
I am not sure am I in the right forum to ask the two tiling related
questions here. If not, I do hope someone could redirect me to the right
place/forum.
As I understand the OSM raster-tiles serving system is one of the
fundamental OSM services. Even the front page map (the SlippyMap and its
I am afraid I am irritating you folks with my focus on errors in the OSM
source data. If so, I just apologize for that in advance. Of course, as in
the science and research generally, it is much more attractive to work on
something new than working on something already done. OSM community is no
I am not quite shore how to handle the following two dilemmas:
1.If a rendering system renders the planet-sea area objects (instead of
planet-land area objects), is then Antarctica a hole in the global ocean
object or the global ocean object simply ends by the upper border-line of
Antarctica?
Hi Paul Norman
Not so long time ago you have triggered a discussion with your article
Moving to stricter multipolygon parsing. The discussion lasted two/three
days, was intense and rather divergent (demonstrating that the multi-polygon
issue is still not only for beginners). After that I have not
There are many traps developers meet while developing vector-based mapping
systems. Consequences are errors, some more visible than the others. Just a
few days ago a researcher from Samsung Electronics asked, on the help forum,
a legal question related to OSM licencing (OSM Developer Licenec 07
The OSM planet-land is created from the coastline dataset. From time to time
it might be reasonable to use the inverse of it, the planet-sea, or even
both of them. But, creating the planet-sea is not just a simple exercise.
Here is one model/option in bullets how this can be done efficiently.
To OSM vector map-makers: do we need the 1:1 vector geometry on the map
server?
To be short I need to jump over many, many fine details. Yet I believe that
for most of the related notions and processes we have approximately the same
understanding. Anyway, in the vector geometry data preparation
Let us move the focus from the high to the low/start end of the map-making
development for a short while. Yes, I know, the work and the issues at this
end are much less attractive but sometimes we just have to be there too. So,
here are some facts (facts underlined) from the last OSM dump, at this
Of course, (vector) tiling is an inevitable phase of any efficient mapping
system covering large areas. But tiled data representation of the RW objects
has many drawbacks/limitations especially when it comes to error detection,
spatial analyses, data volume and so on and this is what I want to
Not sure I understand enough well the many technologies you want to mix here, especially the essential once like tilekiln, vectortiles, CartoCSS stylesheet … where you are the author/maintainer and where “… not provided a project description”. Yet, I do understand, you intend to develop a vector
Not sure I understand enough well the many technologies you want to mix here, especially the essential once like tilekiln, vectortiles, CartoCSS stylesheet … where you are the author/maintainer and where “… not provided a project description”. Yet, I do understand, you intend to
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