Questions tagged [tiles]

A collection of image files each containing a section of a map, or remote sensing scene.

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24 votes
4 answers
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Splitting .tif image into several tiles? [closed]

I have an image of size 1GB (.tif), with the width and height 94000x71680. I would like to chunk this image into 20000X20000 tiles so that I can process them. How can I do this?
Anup Panwar's user avatar
71 votes
7 answers
49k views

Generating Map Tiles with QGIS

Is it possible to generate map tiles from QGIS? I guess QGIS Server must have a way to do it, but is there a way to just generate the tiles and save them to disk? With the new symbology renderer and ...
mattwigway's user avatar
  • 2,937
13 votes
4 answers
7k views

Export ArcGIS tiles data to any image format

I've a raster dataset in Cache/Mixed format in ArcGIS. I need to export this into a georeferenced tiff or any other raster image format in order to use it as base map in some other desktop based GIS ...
muzaffar's user avatar
  • 1,063
22 votes
7 answers
13k views

How to cut a 'tiled image' from a raster dataset using GDAL?

I am working on an app that needs to create tiles (jpeg) from a given raster dataset. My initial inclination was to use gdal2tiles.py, but its performance seems like it could be improved. That leads ...
user890's user avatar
  • 5,733
12 votes
4 answers
5k views

Performance of google map tile creation processes

I know that question is rather vague but please bear w/me. I'm trying to get an idea of what sort of product performance - specifically timing - people have seen for various methodologies they have ...
malonso's user avatar
  • 395
2 votes
2 answers
726 views

Is there any way to 'clean' up ASTER v2 DEM data?

I downloaded all the tiles I needed, then plotted them to find that they don't all seem to have the same quality. Basically, you can see all the edges of a lot of the tiles. Is there any way to clean ...
Chris's user avatar
  • 23
1 vote
1 answer
243 views

Tracking which LiDAR data tiles have been delivered?

My company works with LiDAR data for large electrical transmissions systems (thousands of miles in one project). We model the transmission lines and do analysis using CAD and GIS workflows. We break ...
Brian's user avatar
  • 4,209
28 votes
7 answers
12k views

Are there open access terrain tiles with a permissive license like OSM?

Are there open access terrain pyramidal map tiles with a permissive usage license like OpenStreetMap's? I'm building aviation-related maps with Polymaps and need a good raster basemap. The Google ...
Nelson's user avatar
  • 1,320
17 votes
3 answers
14k views

How to georeference a web mercator tile correctly using gdal?

As an example I will take the following tile http://a.tile.openstreetmap.org/3/4/2.png and save it as "4_2.png". The WGS84 coordinates of this tile can be calculated or read there by ...
Name's user avatar
  • 890
13 votes
2 answers
9k views

GeoServer: Best way to publish 2500 TIFF or 71 ECW files?

I have ortophotos of an area that I need to serve as a background map for my vectors. I got it as 2500 files (71,5MB each) in raw TIFF format with corresponding TFW word file - 180GB of data. ...
sys49152's user avatar
  • 1,691
2 votes
3 answers
3k views

gdal2tiles and QGIS

I have made a tile pyramid of a number of Dutch topographical maps using gdal2tiles. This gives apart from the tiles openlayers.html and tilemapresource.xml. The openlayers shows perfectly and ...
user3087642's user avatar
39 votes
1 answer
43k views

What is the default projection in Leaflet?

I've read an API documentation for Leaflet on its site, but I can't realize: what is a default projection to view maps? It was written about spherical and elliptical Mercator and Equirectangular - so ...
Anton's user avatar
  • 491
32 votes
2 answers
23k views

What are the Differences Between TMS, XYZ & WMTS?

There are currently three different ways of Serving out Tiles: TMS WMTS XYZ I do know that XYZ is now the most popular one, and is used by services like Google, Mapbox, OSM and many others. What is ...
Devdatta Tengshe's user avatar
16 votes
3 answers
30k views

How to calculate the optimal zoom-level to display two or more points on a map

We want to display several markers on a static map and want to calculate the optimal zoom-level like Google Maps does. We already calculated the bounding rectangle and the centerpoint of the map but ...
Tobias Schwarz's user avatar
8 votes
4 answers
10k views

Georeference a pdf without losing image quality

My recent project is to impelent a custom and georeferenced image to a leaflet map. I finisehd my custom map using inkscape now having a .svg and a .pdf vector data. As far as i know my next step ...
howard.D's user avatar
  • 473
7 votes
1 answer
2k views

Holes between imagery tiles projected using gdalwarp

I am having the following issue when reprojecting imagery tiles using gdalwarp. These are 4096x4096 imagery tiles, which I'm gdalwarp'ing from WGS84 to a State Plane projection. When reprojected, the ...
John Sercel's user avatar
6 votes
6 answers
16k views

Ipyleaflet map object doesn't display in Jupyter Notebook but it gets created

When running the code from the example (https://ipyleaflet.readthedocs.io/en/latest/api_reference/map.html#example), no map get displayed. from ipyleaflet import Map, basemaps, basemap_to_tiles m = ...
Nick Pucino's user avatar
6 votes
2 answers
2k views

Seeking documentation for {z}/{x}/{y} syntax in tilesource urls?

Speaking of tilesource urls such as http://{s}.tile.stamen.com/watercolor/{z}/{x}/{y}.png is there any technical documentation or canonical reference for the curly braces syntax? I'd specifically ...
meetar's user avatar
  • 431
5 votes
1 answer
12k views

Merging multiple LiDAR (.las) files using ArcMap

I downloaded about 9 LiDAR scenes from USGS and I want to use ArcMap to merge them so that I can carry out tasks on them together as opposed to one by one.
John_gis's user avatar
4 votes
2 answers
2k views

Tiling from complex, multi-step GDAL VRT?

I've got 1002 ~100 MB (5000'x5000') .tif files in a state plane (transverse merc) projection comprising a county-wide, 1-ft aerial dataset. After two days, gdal_merge.py is only at 93 of 1002. And ...
elrobis's user avatar
  • 6,456
4 votes
2 answers
3k views

Serving multiple styles from tile server

I installed an OSM Mapnik tile server (according to the switch2osm documentation). Now, i'd like to serve tiles in different styles from the same server. Is this somehow possible?
patrickruetter's user avatar
4 votes
2 answers
2k views

Need clarification on GeoServer Meta-tile

GeoServer WMS meta-tile is often recommended to be used to overcome problems such as: point symbols close to tile edges are cut labels are duplicated I just need some clarification here: WMS meta-...
Rino's user avatar
  • 709
3 votes
1 answer
3k views

How to handle a geotiff map together with points with OpenLayers (or other libraries)?

I create a lot of printed maps using various applications (ArcGIS, QGIS, Microstation, Illustrator etc). Sometimes I'd like to turn this map somewhat interactive on the web. What I'm looking for is a ...
oskarlin's user avatar
  • 1,941
3 votes
1 answer
2k views

gdal2tiles generates small picture inside 256x256 tile

I've used gdal2tiles for generating tiles in number of different polar projections and always experienced the same problem — strange small picture inside normal 256x256 png with the rest of space ...
dobrych's user avatar
  • 286
3 votes
1 answer
4k views

Mapserver: labels and tiles

I'm developing map with Mapserver to be rendered in tiles and testing output with Ka-map. Most of the time labels split on two tiles are matching, but sometimes they're not. I configured Ka-Map like $...
alxx's user avatar
  • 203
2 votes
1 answer
1k views

GDAL tiling with a lot of MrSID files

I'm trying to generate tiles for a region with a surface of 85k km2. The data source are MrSID files (2734 files). I'm using gdal to achieve this task. It works fine with a small subset of MrSID, but ...
alasarr's user avatar
  • 451
2 votes
1 answer
587 views

How to load WMS info to an XYZ tile using MapProxy

I am trying to create XYZ tiles from a WMS source. I tried to do it somewhat manually, run into problems (described here), so now I would like to do it using MapProxy. I follow the Getting started ...
zabop's user avatar
  • 1,810
2 votes
1 answer
4k views

How to load tiles from geopackage properly using OpenLayers3 and GeoPackage-JS

I am trying to load tiles from a geopackage (rivers.gpkg sample) using the latest version of OpenLayers3 and the GeoPackage JS library (Project-Link). My current try looks like this: As you can see ...
Lars's user avatar
  • 2,197
2 votes
1 answer
857 views

Blurring raster data across tile boundaries?

I have a raster dataset that is made up of 280 tiles, 51Gb total. I need to smooth/blur the data, retaining the same resolution. I would like to blur across tile boundaries, where possible, so that ...
naught101's user avatar
  • 496
16 votes
8 answers
16k views

What methods are there to produce map tiles for google maps?

newbie to stack exchange here. I'm currently using the automatic tile cutter found here to make the standard 256x256 tiles required to make a custom map type for my map. The map tile cutter script ...
Hung-Su's user avatar
  • 161
16 votes
4 answers
4k views

Are there tools to directly import QGIS projects into Tilemill?

Now that there is a tool to convert an MXD to Tilemill, one must then wonder if the ability to open QGIS documents in Tilemill will ever exist.
DPSSpatial_BoycottingGISSE's user avatar
15 votes
4 answers
36k views

Simple way to have an offline web based map? [closed]

My goal is to have a world map embedded in a web page, but without access to the internet. Preferrably only a set of tiles in combination with some slippy map js-lib. Storage space is not really an ...
tek's user avatar
  • 161
14 votes
3 answers
876 views

How are Google serving up their Styled Maps?

As we all know, Google changed web mapping when they introduced Google Maps. At the time of writing this, tiled maps are now the norm with web mapping. For example, with ArcGIS Server, you cache ...
jakc's user avatar
  • 9,858
12 votes
2 answers
2k views

Tiling Vector data without losing geometrical and topological information

I am trying to figure out a way to sub-divide a vector based map into smaller blocks. I can tile the map based on different strategies such as q-tree. However, it is unavoidable to cut some polylines ...
weliam's user avatar
  • 357
11 votes
1 answer
4k views

Tile WMS vs Image WMS

In OpenLayers 3, there is is ol.source.TileWMS and ol.source.ImageWMS. I don't know if this is specific to OpenLayers, but what are the trade-offs between tileWMS and imageWMS? Is there a performance ...
Kevin Wheeler's user avatar
10 votes
4 answers
4k views

Rendering custom OpenStreetMaps style (land=white, water=black): do I need a dedicated computer just to do this?

EDIT: My goal is NOT to use OpenStreetMap or cloudmade as a web map. I described exactly what I want ("a full, rasterized set of tiles for the entire world at zoom=10 (around 68 Gigapixels, water=...
Jared Updike's user avatar
10 votes
3 answers
3k views

Disk space and numbers of tiles for world layer

I'm thinking about testing tiles generation of a world layer for webmapping. In this context, I want to know how I can calculate the number of tiles (256x256 for tilecache if I remember) I will need ...
ThomasG77's user avatar
  • 30.5k
10 votes
1 answer
2k views

Understanding the Map Tile creation properties

I am trying to create a tile base map. I have an image that I want to create the tile from and I am using GDAL. I managed to create the tiles but when I view the result it seems that the tiled map is:...
shannoga's user avatar
  • 103
9 votes
1 answer
4k views

OpenLayers with my own OSM data server

I've gone through the process of setting up my own OSM database / tile server by setting up PostGIS, importing the Planet.osm data snapshot (took a few days), and setup Mapnik / cascadenik, etc. I ...
colemanm's user avatar
  • 1,347
9 votes
5 answers
13k views

Adding custom map tile layer using QGIS?

I am trying to display the following background map in QGIS 2.0: http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/${z}/${y}/${x}. In a custom web map client, this is ...
jirikadlec2's user avatar
  • 1,330
8 votes
7 answers
6k views

Is there an online tile-based elevation service?

I am working on an application that requires the elevation at a given lat/long coordinate for lots of closely spaced coordinates along any given irregular path. (The path is a trace of a glider/hang-...
petebu's user avatar
  • 181
7 votes
2 answers
1k views

How does oversampling work in WMTS layers?

(This question arises as a sub-topic of the answer provided here.) In the symbology options for a raster layer in QGIS, there is a setting called "Oversampling" (see image below). How does this ...
Nathan's user avatar
  • 1,284
7 votes
1 answer
4k views

QGIS Project to MBTILES / SLIPPY MAPS

Assuming you have 20+ Qgis projects each with dozens of layers: Background: Web Map Tiles, Features: Millions of Polygons & Points Features are labeled, labels are never overlapping with each ...
UHM's user avatar
  • 149
7 votes
5 answers
6k views

WFS to Vector Tiles

Is there, by some miracle, an existing piece of software which is able to convert a (3rd party, GeoServer) WFS feed into vector tiles? In a utopian world, this would happen on the fly, but a download/...
Steve Bennett's user avatar
6 votes
1 answer
2k views

Maximum number of Tiled Layers in OpenLayers

I'm developing an OpenLayers site where the client wants a dozen layers that can be individually turned on and off, which is a bit of a bummer in terms of performance. The data is PostGIS and static ...
user avatar
6 votes
2 answers
5k views

The fastest way of generating tiles from raster?

I have some MODIS imagery 250m resolution covering a large area which I generate tiles from using Mapnik and generate_tiles.py script. I need to run this script every day with new satellite images, ...
oskarlin's user avatar
  • 1,941
6 votes
2 answers
3k views

Hide old tiles while loading new ones when zooming in Openlayers

Standard behavior, while zooming in and out in Openlayers, is that the current tile gets resampled and displayed stretched or compressed until the new tile is available. That's how it looks like while ...
geraldo's user avatar
  • 960
6 votes
5 answers
8k views

gdal2tiles.py generates wrong tiles / MapTiler the right ones

I'm trying to generate tiles with gdal2tiles.py and the resulting tiles are stored as 18/132639/164219. If I do the same thing with MapTiler (the GUI variant of gdal2tiles) the tile result is 18/...
user avatar
6 votes
1 answer
2k views

Using Baidu tiles in QGIS

I study Chinese cities a lot and would like to use Baidu map tiles in QGIS. Can anyone advise me on how to go about this? I haven’t been able to find any advice on achieving this on the web.
SHAW's user avatar
  • 81
6 votes
2 answers
2k views

What tile/tiling strategy should I use with GeoNode/GeoServer?

I've got a wicked GeoNode instance running, loaded with some basic vector data. I want to be able to serve our local-County aerial imagery as a basemap within GeoNode. I am thoroughly overwhelmed with ...
oeon's user avatar
  • 544