tilez | js application serving vector tiles in GeoJSON or TopoJSON
kandi X-RAY | tilez Summary
kandi X-RAY | tilez Summary
VTS clips vector tiles from a PostgreSQL/PostGIS data source and stores them in CouchDB (acting as a cache); these tile may belong to different layers, of any geometry type. Every zoom level can be defined independently, hence different tables or selections can be used, though the columns they produce, and the coordinate reference system used, must match at all zoom levels. VTS can be tested using a forked version of OpenLayers 2:
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tilez Key Features
tilez Examples and Code Snippets
Community Discussions
Trending Discussions on tilez
QUESTION
I would like to overlay a quiver plot of wind direction on a basemap in my jupyter notebook. I have a pandas dataframe that includes columns: | Latitude | Longitude | True Wind Inferred |
I have already used geopandas to create a geodataframe and plot gps track data on an osm basemap using contextily (code below). I have also been able to bin the latitude and longitude to get average True Wind Inferred (wind direction) for a "box" on the map. However, I haven't found any examples on how to plot a quiver plot of the binned True Wind Inferred in the boxes. I have only plotted as a scatter plot so far but the colour map does not visualize directional data well.
Imports:
...ANSWER
Answered 2019-Mar-26 at 12:04I worked it out. The X,Y for the quiver need to come from the geometry
of the geodataframe to plot properly on the same axis. The geodataframe columns look like:
QUESTION
Good evening everyone.
I've been messing a bit with isometric tile worlds and I have a few doubts about rendering the elements on it. When I build a single height map I render it first and then add the diferent elements on top, and the displacement of the last seem right.
...ANSWER
Answered 2017-Jun-24 at 02:32Draw your entire floor layer in a first pass. Then in the second pass draw all walls and objects and moving entities.
I could change the position to the new one before rendering,
David Brevik, programmer on Diablo, mentions using this option in his GDC talk Diablo: A Classic Games Postmortem. It was his first "What Went Wrong" example!
Reference: https://www.youtube.com/watch?v=VscdPA6sUkc&t=20m17s
Turns out this is a classic hurdle in isometric games.
QUESTION
I have a simple isometric sorting system with this function (code is in Typescript
/Javascript
) :
ANSWER
Answered 2017-Jun-22 at 09:52Defining depth: Higher depths values are closer to the screen. Unlike 3D perspective projection where depth is distance from the front plane, this answer uses depth as distance towards the screen.
Iso projectionIf you have a iso projection
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install tilez
To test the integration between the client and the server, you may use clients built with different mapping frameworks (OpenLayers 2, Leaflet and OpenLayers3). The only full-featured client is the OL2 one, while the Leaflet one lacks the ability to choose different layers and the OL3 one shows only tiled data (in time, all clients should have the same capabilitis). To test, just load the index.html page in your browser: file:///+path_to_vts_/vector-tile-server/client/ol2/index.html file:///+path_to_vts_/vector-tile-server/client/leaflet/index.html file:///+path_to_vts_/vector-tile-server/client/ol3/index.html ...and start zooming and panning around.
Check that version to install is on GitHub;
Prepare the combined properties file for the target system: mvn compile -Ddeployment={deployment type} -Dsystem={target system},{target db server}
Copy the combined properties file from the development machine to the target system under ${AURIN_DIR}
Create, if not existing, a "vts" database on CouchDB on the db server
Create views and other functions on the db2 server mvn compile -DinstallViews=true -Ddeployment={deployment type} -Dsystem={target system},{target db server}
Open an SSH session on the target system
Install vts of the required version (see package.json) in your home directory in the server npm install git+ssh://git@github.com/AURIN/vts.git@<version of vts>
Stop the service: sudo service aurin-api-vts stop
Rename the old version's directory (if existing) on the target system to datastore.old
Move the vector-tile-server directory (under node_modules) to the relevant position on the target system (usually /opt).
Start the service: sudo service aurin-api-vts start
Test it: curl -k -X GET "https://dev-api.aurin.org.au/vts/layers" should return a JSON array with defined layers.
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