#tile

Testing client side #map renderers on #polygons | Imagico.de
▻http://blog.imagico.de/testing-client-side-map-renderers-on-polygons

http://blog.imagico.de/wp-content/uploads/2021/08/overzoom_discretization_65536.png

In terms of the quality criteria i looked at here, that is primarily precision, resolution and aliasing artefacts in polygon rendering, the tested client side renderers perform somewhere between so-and-so and badly. Openlayers shows the overall best performance. Tangram is on the second place, primarily because of much more noisy results due to aliasing artefacts. Maplibre GL makes the bottom end with a massive bias expanding polygons beyond their actual shape essentially rendering many of the tests useless and making any kind of precision rendering impossible – while being subject to similar levels of aliasing as Tangram.

Do i have a recommendation based on these results? Not really. It would be a bit unrealistic to make an overall recommendation based on a very selective analysis like this. Based on my results i would definitely like to see more examples of practical cartography based on the Openlayers vector tiles rendering engine.

If i should really give a recommendation to people looking to start a map design project and wondering what renderer to choose for that it would be a big warning if you have any kind of ambition regarding cartographic and visual quality of the results to think hard about choosing any of the client side renderers discussed here.

Comparatif de rendu des polygones avec #MaplibreGL #Tangram & #Openlayers qui s’en sort le mieux.

Un peu en lien avec ▻https://seenthis.net/messages/932812

#tiles #vector

Building the Roman Empire #Vector #Tile #Map | Pelagios Commons
▻http://commons.pelagios.org/2017/11/building-the-roman-empire-vector-tile-map

http://commons.pelagios.org/wp-content/uploads/2017/11/figure_3.png

In our previous article, we wrote about the difference between raster tiles and vector tiles, ▻http://commons.pelagios.org/2017/09/rdg-update-the-roman-empire-vector-map-project. Now, we will be able to study the outcome. The technicalities of the process will be discussed, and the result as of now can be studied here ▻https://klokantech.github.io/roman-empire/#3.97/45.49/6.47. The section “Display the vector tiles with style” goes over the functionalities of the map.

The input layers for the map have been extracted from the SQL-database of DARE, ▻https://dare.ht.lu.se with a subset of the attributes, that is, places, roads, fortifications and provinces. The files can be edited in a desktop GIS application such as QGIS. Since we are publishing the data on Github, only data with an open license has been included in the project. They are all vector layers (point and line geometries) and have been converted to GeoJSON format in WGS 84 projection. They can be explored from the website of the project at Github, ▻https://github.com/klokantech/roman-empire in the data directory and previewed on a map. Among the input files are also the icons (in SVG format) that depict places of different types, and server scripts.

On the discussion on OSMF supported #vector #tiles maps
▻http://blog.imagico.de/on-the-discussion-on-osmf-supported-vector-tiles-maps

But trying to address this problem now by crawling under the wings of Mapbox or other big corporations and making OSMs public image fully dependent on technology developed and controlled by corporate players would in my opinion be a big mistake. Open Source or not – the past experience with Mapnik and Carto has quite well demonstrated i think that OSM currently lacks the resources and expertise to develop or to organize development of a map rendering framework for the specific needs of the project independent of either the big corporate #OSM users or the broader FOSS community.

#OpenStreetMap #vector #tiles : mixing and matching engines, schemas and styles
▻https://stevebennett.me/2017/08/23/openstreetmap-vector-tiles-mixing-and-matching-engines-schemas-and-styl

https://steveko.files.wordpress.com/2017/08/screenshot-2017-08-17-21-52-54.png?w=630

For my next web mapping project, we’ll use vector tiles. Great. And the data will come from OpenStreetMap. Excellent. Now you only have five more questions to answer.

For the front-end web application developer who wants to stick a #map in their site, vector tiles open up lots of options and flexibility, but also lots of choices.

– Display engine: which JavaScript library is going to actually draw stuff in the browser?
– Style: how will you tell the display engine what colour to draw each thing in the schema?
– Data schema: what kinds of data are contained in the tiles, what are the layers called, and what are the attributes available?
– Tile transport: how will the engine know where to get each tile from?
– File format: how is the data translated into bytes to store within a tile file?

Bon petit topo pour se remettre dans le bain :)

Introduction of MAPCAT - the new world map portal

The company Mapcat from Hungary is a new competitor in the market for #map #tiles, #routing and #geocoding

▻https://blog.mapcat.com/mapcat-world-map-introduction

https://blog.mapcat.com/wp-content/uploads/2016/10/Screenshot-2017-01-04-13.40.40.jpg https://blog.mapcat.com/wp-content/uploads/2017/04/Screenshot-2017-03-16-11.03.59-1024x530.jpg

According to your choice, we will offer you beautiful vector or raster (png) map tiles working with high speed, based on the highly-detailed, community edited OpenStreetMap database.Furthermore, with MAPCAT, you will be able to:

– Access OSM, the world’s most detailed and dynamic community-edited map database, turned into beautifully customized, easy-to-use maps
– See updates of OSM data in real time, practically with no lead time
– Have the maps in your own language or any preferred language (I18N)
– Switch to MAPCAT maps easily, without redesigning your current application
– Set custom views – streetmap, bicycle map, terrain map

▻https://blog.mapcat.com/vectorraster-maps

Un nouveau mapbox ? En tout cas leur ty chat qui illustre tous leurs billets de blog est kromeugnon et ils n’oublient pas de citer osm (à tout va).

#osm

Serving vector tiles is no fun. Grandine wants to change this.

▻https://github.com/thomersch/grandine

Some of you already might know that I am in the lucky, but stressful position of being funded for six months to work on #Vector #Tile related infrastructure. This is coming from Prototype Fund, a fairly new initiative by the Open Knowledge Foundation Germany and the German Ministry for Education and Research.
In short: Make hosting Vector Tiles painless and reproducible.

▻https://thomas.skowron.biz/blog/grandine-summary-march-2017
▻https://thomas.skowron.biz/blog/grandine-summary-april-2017
▻https://thomas.skowron.biz/blog/grandine-summary-may-2017
▻https://thomas.skowron.biz/blog/grandine-summary-june-2017
▻https://thomas.skowron.biz/blog/grandine-summary-july-2017

#osm #map

Sentinel-2 cloudless map of the world by EOX

Licensen för att använda tjänsten är #CC-BY och man skall ange: “Sentinel-2 cloudless – ►https://s2maps.eu by EOX IT Services GmbH (Contains modified Copernicus Sentinel data 2016 & 2017)” på eventuella följdprodukter. Jag antar att man får revidera texten när det börjar tas med bilder från 2018.

►https://s2maps.eu

Mapbox created a #cloudless Landsat #map in 2013. That was a huge step for all the webmapping enthusiasts as we got a composit image of the world with stunning ground resolution and still cloudless! Now EOX, a company based in Vienna, provided a similar product called Sentinel Cloudless. And it is “for free”.

via ▻http://www.digital-geography.com/short-announcement-new-cloudless-sentinel-atlas

#tiles

MapProxy — The accelerating web #map #proxy.
▻https://mapproxy.org

https://mapproxy.org/static/img/mapproxy-overview.png

MapProxy is an open source proxy for geospatial data. It caches, accelerates and transforms data from existing map services and serves any desktop or web GIS client.

MapProxy is a #tile #server (WMS-C, TMS, WMTS, KML SuperOverlays). It reads data from:

– WMS sources (1.0.0–1.3.0)
– WMTS/TMS sources
– Mapserver and Mapnik configurations
– any TileCache, Google Maps or Bing compatible source

Other features:

– cache tiles in the filesystem, MBTiles/SQLite, ArcGIS Compact Cache, S3, Redis, Riak, or CouchDB
– reproject WMS and tile sources to other SRS
– stores identical tiles just once (e.g. ocean tiles)
– embed watermark in tiles
– merge multiple sources
– limit sources to polygon areas
– manipulate image bands to create grayscale- or false-color images
– many more

How to set up a #tileserver using #Tilestache, #Gunicorn and #Nginx

▻http://www.digital-geography.com/set-tileserver-using-tilestache-gunicorn-nginx

#mapserver

Serving Vector Tiles - Paul’s Blog

▻http://www.paulnorman.ca/blog/2016/11/serving-vector-tiles

If you want to serve vector tiles, there are a few server options that have developed, each with different strengths and weaknesses.

#mapserver #vector #tiles #osm

▻https://www.mediawiki.org/wiki/Maps

The maps project aims to build cartography technologies for all #Wikimedia projects, at a scale sufficient for their widespread usage.

The production maps cluster (See also on Wikitech) is in development by the WMF Discovery team. The implementation has various components including:

– #Kartotherian Github (primary) / Gerrit (mirror) - a server capable of providing #map #tiles in #vector (pbf) or raster (png) formats, as well as #static_map snapshots of any size for a given location.
– Tilerator Github (primary) / Gerrit (mirror) – a distributed backend tile generation service with a jobque
– A flexible sources system to set up the needed storage and processing pipeline

A version of the tile server is now in operation at maps.wikimedia.org.

– It serves tiles at URLs such as

https://maps.wikimedia.org/osm-intl/11/327/791.png

(bitmap) or …/791.json (OSM data – waterways, roads, place labels, etc.).
– It can scale images for the high-DPI devices – e.g. 1.5x, 2x, etc …/791@1.3x.png
– It can provide static maps with a given size and scaling, e.g.

https://maps.wikimedia.org/img/osm-intl,6,44.8247,4.9981,1000x600.png

Kartotherian - OpenStreetMap Wiki

▻http://wiki.openstreetmap.org/wiki/Kartotherian

Kartotherian is a vector tile server based on open-source Mapbox stack, developed by Wikimedia Foundation for use on Wikipedia. It is horizontally scalable and designed for high loads.

Architecture

Kartotherian is a set of 3 services:

– Kartotherian - tile server itself.
– Tilerator - tile rendering queue.
– Tilerator-UI (optional) - UI for issuing commands to Tilerator.

While Kartotherian can be configured to generate tiles on the fly straight from PostgreSQL, this is intended for development use only and the main mode of operation is to convert vector tiles generated by Tilerator into whatever user-requested format. An HTTP cache such as Varnish is recommended for reducing load on Kartotherian.

▻https://github.com/kartotherian/kartotherian

#mapserver

OpenSeaMap - Météo
▻http://map.openseamap.org/weather.php

All Weather information originate from the OpenPortGuide-Project

#map #meteo #osm #tiles

OpenTileServer | OpenStreetMap Server Script
▻http://opentileserver.org

mapfig have created a new project OpenTileServer, which provides an installation script to set up an #osm tile server on an Ubuntu Linux system in a very easy way – think “switch2osm” but without the editing. Users choose what data to load, and whether they want OSM’s “standard” map style or “OSM bright”. Example OpenLayers and Leaflet pages are also included.

#mapserver #tiles

OSRM Debugging #map
▻http://map.project-osrm.org/debug/#12.49/48.3955/-4.4922

A little while ago, we added a #vector tile plugin to OSRM. Why? So you can see the road network that OSRM has in memory :-)

Today, I’ve added a viewer for these #tiles to the front-end for the demo server at:

▻http://map.project-osrm.org/debug

The colored roads are what OSRM is routing on with the car profile. Speed values are attached to edges, and roads are colored according to travel speeds. The dark background is #osm.

Notes:

tiles are only generated to Z12, so if you zoom out too far, you’ll just get the background map.

if you zoom in too far, there’s a geometry clipping bug, so some lines might go to crazy places. Just zoom out a bit.

small component identification doesn’t seem to be working

#route

#vector #tiles - YouTube

In Part 1 I’ll talk about vector tiles, both serving and consuming them. Part 2 will discuss creating and styling vector tiles with your own data.

▻https://www.youtube.com/watch?v=xI7QkEodCac

▻https://www.youtube.com/watch?v=GPArNrRL79Q

#map

Free #vector #tiles from OpenStreetMap – OSM2VectorTiles
▻http://osm2vectortiles.org

Create a custom base #map in minutes with our free vector tiles from OpenStreetMap data. Easiest way how to switch to #osm thanks to MapBox open-source tools. Design your own map of world or country, serve raster or vector tiles from any virtual #server or your own infrastructure, even offline behind a firewall.

Wow, j’étais passé à côté de cette nouvelle fonctionnalité de #TileStache !

▻https://github.com/TileStache/TileStache/pull/204

New optional Layer parameter:
pixel effect
Optional dictionary that defines an effect to be applied for all tiles of this layer. Pixel effect can be any of these: blackwhite, greyscale, desaturate, pixelate, halftone, or blur.

https://cloud.githubusercontent.com/assets/1008637/5132973/f5b1f812-70b5-11e4-9e98-f5b581852029.png https://cloud.githubusercontent.com/assets/1008637/5132992/21470eb8-70b6-11e4-941d-dd5c7ffcc214.png https://cloud.githubusercontent.com/assets/1008637/5132994/2bee4db8-70b6-11e4-8f2b-cc810d3e1350.png https://cloud.githubusercontent.com/assets/1008637/5132998/34e459f8-70b6-11e4-99a5-0bc704726214.png https://cloud.githubusercontent.com/assets/1008637/5133002/395e0ace-70b6-11e4-902d-b9249ba089b2.png https://cloud.githubusercontent.com/assets/1008637/5133004/3e205224-70b6-11e4-9f1e-120ccd83475c.png https://cloud.githubusercontent.com/assets/1008637/5133008/48d88aec-70b6-11e4-9527-8d51b5cd2cac.png

#mapserver

Introducing #3d #tiles
▻http://cesiumjs.org/2015/08/10/Introducing-3D-Tiles

3D Tiles are an open specification for streaming massive heterogeneous 3D geospatial datasets. To expand on Cesium’s terrain and imagery streaming, 3D Tiles will be used to stream 3D content, including buildings, trees, point clouds, and vector data.

http://cesiumjs.org/images/2015/08-10/nyc.png

http://cesiumjs.org/images/2015/08-10/stream0.png

http://cesiumjs.org/images/2015/08-10/stream1.png

http://cesiumjs.org/images/2015/08-10/stream2.png

http://cesiumjs.org/images/2015/08-10/stream3.png

#map

systemed/tilemaker · GitHub
▻https://github.com/systemed/tilemaker

Tilemaker creates #vector #tiles (in Mapbox Vector Tile format) from an .osm.pbf planet extract, as typically downloaded from providers like Geofabrik. It aims to be ’stack-free’: you need no database and there is only one executable to install. via ▻http://blog.systemed.net/post/13

#map

OpenTopoMap - Topographische Karten aus OpenStreetMap

▻http://opentopomap.org/#map=5/47.220/3.955

Cool, bientôt un nouveau fond de carte dans le plugin #GIS pour #SPIP :)

sources : ▻https://github.com/der-stefan/OpenTopoMap

#osm #tiles #map

The State of #vector #tiles | FOSS4G NA 2015
▻https://2015.foss4g-na.org/session/state-vector-tiles

Vector Tiles provide a fast, efficient, and flexible way of sharing spatial data on the web. This talk will highlight the latest advances in the Mapbox specification for Vector Tiles. New and existing open source implementations to create, consume, and transform Vector Tiles will be covered as well as recommendations for how to achieve the best possible performance for decoding and rendering.

▻https://www.youtube.com/watch?v=se2cd3BMYRY

▻https://2015.foss4g-na.org/sites/default/files/slides/foss4g-2015-sf-springmeyer.pdf

#map

mapbox/mapbox-studio-picture-book.tm2
▻https://github.com/mapbox/mapbox-studio-picture-book.tm2

Picture book style for #mapbox_studio.

http://www.geotribu.net/sites/default/public/public_res/img/articles-blog-rdp/capture-ecran/mapbox.png

demo : ▻https://www.mapbox.com/bites/00099/#

#map #styles #tilemill

Weekend Update - SNL 40 Edition
▻http://jonahadkins.github.io/weekendupdate

Maps / Layers Inspired By Saturday Night Live’s Weekend Update Segment

For Your Not So Serious Stories And Maps*

Includes #tilemill Files And Sample Images For The Iconic #map Backgrounds Featured On Weekend Update

sources : ▻https://github.com/jonahadkins/weekendupdate

#styles

mapbox/geojson-vt
▻https://github.com/mapbox/geojson-vt

Slice GeoJSON into vector tiles on the fly in the browser A highly efficient JavaScript library for slicing GeoJSON data into vector tiles on the fly, primarily designed to enable rendering and interacting with large geospatial datasets on the browser side (without a server). Resulting tiles conform to the JSON equivalent of the vector tile specification. To make data rendering and interaction fast, the tiles are simplified, retaining the minimum level of detail appropriate for each zoom level (simplifying shapes, filtering out tiny polygons and polylines). Here’s geojson-vt action in Mapbox GL JS, dynamically loading a 100Mb US zip codes GeoJSON with 5.4 million points:

https://cloud.githubusercontent.com/assets/25395/5360312/86028d8e-7f91-11e4-811f-87f24acb09ca.gif

#map #geosjon #tiles

Bundesgeoportal, geo.admin.ch: Öffentlicher Zugang zu Geoinformationen und Geodaten
▻http://www.geo.admin.ch

Main features are: single point of entry for all spatial #data portals and services of the federal authorities of Switzerland / Multilingual : five languages / fast and user friendly #map viewing interface via map.geo.admin.ch with high performance of information retrieval ▻https://www.youtube.com/watch?v=e1tyOM33d3c

via ▻http://www.digital-geography.com/geo-admin-ch-bringing-swiss-geodata-potential-life

#tiles