Questions tagged [utfgrid]
UTFGrid is a specification for rasterized interaction data.
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OpenLayers UTFGrid placeholders not resolved
I am trying to implement an UTFGrid layer on my OL 7.5.2 map, according to this sample: https://openlayers.org/en/latest/examples/utfgrid.html.
However, when creating the layer, the placeholders in ...
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Read utfgrid with maplibre-gl
Is there any way to display a UTF-Grid interaction in maplibre-gl, like there is with Leaflet?
I have read through the maplibre-gl documentation, but i haven't found anything like a UTF-Grid source.
...
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Population density grid confusion
I have a multi polygons data where red means most populated and white means less populated. I created a gridded population density (image on the right) out of them, but the result seems not quite make ...
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Carto UTF Grid in OpenLayers 5
Openlayers doesn't seem to support the URL that Carto prefers for getting UTF Grids.
import TileLayer from 'ol/layer/Tile';
import UTFGrid from 'ol/source/UTFGrid';
const newUTFLayer = new TileLayer(...
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UTFGrid grid map generated by TileMill v0.10.1 looks off from the actual map
I have been trying to create UTFGrid from shapefiles using TileMill v0.10.1. For some reason the grid map it generated looks like it is stretched from the original map.
For Example:
This is the ...
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serving UTFgrid information made with mb-util with leaflet
I've created the mbtiles file with tilemill and exported it on my ubuntu webfolder with the following command:
mb-util --scheme=xyz /folder/tile.mbtiles /var/www/html/my-tiles
To get utfgrid ...
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Creating dynamically filtered layers using Tilestache/Mapnik?
I'm using Tilestache to generate two layers with the mapnik and mapnik grid providers, and it's working great!
However, I want users to be able to filter the data over many (more than ten) dimensions,...
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Calculate bounding box + buffer for rendering a map tile with mapnik library
Mapnik library has a Projection object (I'm using Python bindings):
spherical_mercator = '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +...
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PostGIS raster to UTFGrid
I am trying to create a UTFgrid JSON with a Raster in PostGIS. The goal is to provide weather data for web maps.
I found some libraries:
https://github.com/Ecotrust/create-utfgrids
https://github....
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Geoserver get UTFGrid in Zoom, X, Y format
I am trying to overlap an UTF grid on a WMS layer in order to interact with it. As front end library I am using leaflet and the layers are served by GeoServer.
Now, I found some Leaflet plugins that ...
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Access MBTiles png and json using tilestache?
I've got a Tilestache server running locally with an MBTiles source file. I can get the PNG tiles without problem, but I'm having a hard time figuring out how to also get the UTFgrid.
Is it possible ...
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Tilestache Multiple Grids results in PostGIS error
I've got a PostGIS database which Mapnik and Tilestache pull from. The mapnik xml has multiple layers as I'm pulling from different tables depending on the zoom - and these different tables have ...
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Display GeoServer's UTFGrid output in OpenLayers 3
GeoServer added UTFGrid output for vector features starting from the 2.9-beta version. It is implemented as a WMS service output format.
After installing GeoServer 2.9-beta, adding a datastore with a ...
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How to display UtfGrid info
First off sorry if this question have been asked, I have been looking for an answer for some time now but can't find any solution.
I have created a .mbtiles file with Tilemill, extracted the .png and ...
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UTFGrid and line features: UTFGrid not consistently triggering mouse events for line features
[Update: My first solution works (notes below), but I'm still interested in responses to the second solution I suggested.]
Original Post:
Has anyone experienced and resolved difficulties with ...
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UTFgrid to shapefile
Is it possible to transform utf grid documents into shape files? I only have the utfgrid files and wish to use the shape files to render outlines on a map.
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Serving Dynamic Tiles
I want to display data (tiles and utfgrid info) inside MSSQL on top of google maps using Mapnik.
I have looked into mapnik and setup a small prototype both with tilestache and also with node-mapnik ...
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How to make interactive OpenStreetMap layers in TileMill?
If I'm reading the UTFGrid spec right, you can only have 65,501 different interactive features. Or more precisely, every feature needs a unique ID in the range 0-65501.
TileMill uses UTFGrid for its ...
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3
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Get basic image/utf grid tile URLs from CartoDB visualization?
I'd like to add the layers from a CartoDB visualization to a Leaflet map directly (NOT through CartoDB.js). My visualization has one image tile layer generated from data, and one utf grid tile layer ...
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UTFGrid from raster source
Is it possible to make utfgrids from a raster source (e.g. GeoTIFF)?
I am trying to get utfgrids from a .tif with mapnik.xml and TileStache but it seems not to be working. As a workaround I am ...
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UTFGrid and custom tiles in OpenLayers
This is my first post here so I apologize in advance if a convention is escaping me in the question format.
I am trying to display information from utfgrid in OpenLayers. I am using custom tiles in a ...
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Displaying large number of polygons on web map?
I've started working on a project with a huge number of polygons, and I'm unsure of how to display/host it. The map I'd like to end up with will have three layers:
1) Shaded polygons representing ...
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Create interactive map with no server
I have managed to build a great web mapping application using tiles created from GeoWebCache and a custom gridset, but I now need to add an overlay to the base maps. The only interactivity I need is a ...
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How Can I make UTFGrid files?
I have been looking at the UTFGrid specification and the usage of UTFGrid in Openlayers.
How do I create the required UTFGrid files for my data in PostGIS?
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Displaying UTFGrids with Mapnik and TileStache
I'm new to using Mapnik and TileStache. The reason i wanted to use these two pieces of software was to understand the UTFGrid specification i've seen used all over the place ( examples here, here, ...
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TileStache & UTF Grid provider is having unexpected results
I am having some weird output by the UTF grid provider in Tilestache on specific shapefiles; Specifically shapefiles reprojected from Census TIGER files. I know my server is configured correctly ...