sabas88 has commented on the following diary entries

Post When Comment
State of the Map : Some BoF sessions 8 days ago

Here are all the (top 200) trees in a radius of 300 km around Praha (Czech Republic)

SELECT ?item ?itemLabel ?location WHERE { ?item wdt:P31 wd:Q10884 . ?item wdt:P625 ?coords . wd:Q1085 wdt:P625 ?centerLoc . SERVICE wikibase:around { ?item wdt:P625 ?location . bd:serviceParam wikibase:center ?centerLoc . bd:serviceParam wikibase:radius "300" . bd:serviceParam wikibase:distance ?dist. } SERVICE wikibase:label { bd:serviceParam wikibase:language "en" } } LIMIT 200

Fast explaination: "wd:" is the prefix of an object (URI in Linked Data terminology) Qxxx is an object id Pxxx is a property id (proposed and defined through a process) Each value could be another object or a string ?variable is a variable (like $x in PHP) which could be used in the SELECT (acting as a column in the result table) or in the WHERE (the 'filters') WHERE is where you put the filters: the data model is made of triples (subject predicate object) and this is reflected in the query syntax. each filter is terminated by a dot and subject or object can be both variables.

To use wikidata query service you need a basic understanding of SQL (for how querying works), RDF (for the logic behind the system) and Wikidata to search for properties and objects...

We could see if there's enough interest to start some sort of discussion / user group :-)

New Telenav tool: Fix missing and wrong one-way streets 12 months ago

Nice, I fixed some streets already!

Doing some highway/routing QA with Mapbox's Distance API about 1 year ago

I wrote a tool to bruteforce routes with OSRM (before distance matrix was implemented), but I didn't succeed in using it as a QA tool because of the amount of data required - for a country. Instead I did use it at regional scale to compute matrices between points.

Valhalla could be cool to try for this kind of tests

1.6 Gigapixel image - OSM Point of Interest density map of Europe about 2 years ago

Beautiful! Thanks for this visualization.

Does it render? over 2 years ago

Yes, it originally did that with Mapnik vs Carto.. The code in itself it's extensible, it only needs a json with the handled tags.. (as I didn't find a way to automatically search tags easily in the sql queries, we could only consider Filter entries for example).

Does it render? over 2 years ago

Thanks jongleur :-)

I added some phrases in the output which point to Wiki and TagInfo for the user to gather more info... Some tag wiki pages used to have a description of the result, didn't them?

I mapped 100 countries in 100 days over 2 years ago

@AndiG88 Dunno, it would be like to post on Twitter/Instagram a map? :)

@wille: thanks!

Creating a map with markers imported from OpenStreetMap almost 3 years ago

Also Overpass Turbo can export to via a gist :-)

What is the OpenStreetMap convention? Do we tag addresses on buildings or on separate nodes? almost 3 years ago

In Italy there are also two cities (Genoa and Florence) where there's distinction between addresses for buildings (black addresses) and for commercial activities (red addresses)!

I map on a node not to overcomplicate mapping... And I don't like the interpolation, but that's a personal taste :-)

OpenStreetMap and the Public Domain almost 3 years ago

I think this could be solved by updating the contributor terms to provide exception to your "I want my data back!" section in case of government or ngo for example... In these "public service" cases perhaps less bureaucracy is better...

SASA bus stops import about 3 years ago

Potrebbe essere una attività per OSMit nel caso.. :)

Appena arrivato about 3 years ago

Ciao, gli autori di iD stanno lavorando con gli sviluppatori di Firefox per migliorare le prestazioni, le versioni in sviluppo dovrebbero progressivamente migliorare... :)

Benvenuto! Se hai bisogno non esitare a contattare altri mappatori.

North Korea is strange about 3 years ago

@Paul: the map it's a wiki :3

@Popolon: awesome!

I wonder if on a micro-mapping level we shoud map each letter :D

North Korea is strange about 3 years ago

Cool, thanks! I supposed was some sort of message from the Leader :-)

North Korea is strange about 3 years ago

@EdLoach: lol there's also an exclamation mark, could be "Property of our supreme leader, don't picture me!"

@Aury88: for the lulz :D

OpenStreetMap Node Density Visualized over 3 years ago

Awesome! Could you make a tileset (only low zooms..) like the one by MapBox on the geotagged tweets?

Inserimento numeri civici di Firenze over 3 years ago

Firenze e Genova sono le uniche città d'Italia ad avere i numeri rossi :D Io li stavo mettendo tipo 52r, ma mi ha scritto un mio 'collega' dicendo che si preferiva mettere 52 rosso....

Beati voi che avete gli open data :P

Fine mappatura dei numeri civici di Verderio Superiore over 3 years ago

Meglio che farti seguire dalle vecchiette sospettose mentre percorri sistematicamente le strade di un paesello in sardegna.. (true story ahahah!)

Voglio le notifiche sul diario :(

Se segui FB

Fine mappatura dei numeri civici di Verderio Superiore over 3 years ago

Bell'idea la gif ;-)

Fine mappatura dei numeri civici di Verderio Superiore over 3 years ago

Adesso tocca a Verderio Inferiore :P