An image file containing a section of map.

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1answer
47 views

Rough edges on tiles in QGIS

I'm loading four .ASC files into QGIS, each containing topographical data about a tile of 10 x 10 km. On the map, this data is displayed as black/white and different shades of gray. My problem is that ...
2
votes
3answers
244 views

Generating a polygon tile index from multiple vector datasets

OK. well this is silly, in that there is no way it should be as difficult as it has been for me to find information regarding how to generate a polygon tile index from multiple vector (contour) tiles. ...
0
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2answers
188 views

How to call Geowebcache tile openlayers [closed]

Can anyone provide the solution, how to call GeoWebCache tiles in openlayers as i have 20GB of tiles created in gwc folder.
1
vote
1answer
293 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 ...
1
vote
1answer
428 views

How to draw bus routes on OpenStreetMap with mapnik

I have successfully set up Postgres with PostGIS and MapNik to serve map tiles. The database is populated with data from OpenStreetMap project. I can see that bus routes are in the data-set, but I ...
0
votes
1answer
2k views

offline map tiles in standalone desktop app

Which mapping API can be used (either in a C# desktop app or as a standalone mapping app) that accesses an offline tile collection and requires only a minimal amount of additional servers / other ...
0
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1answer
488 views

Map tiles rendering from local map server to disk

I am looking for a solution for following use-case: I need to run a local map server using OpenStreetMap (OSM) data Map server needs to be able to render a set of map tiles to local directory on ...
3
votes
2answers
587 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?
1
vote
1answer
83 views

Custom tiles in local CRS

I want to achieve the following: Create an OpenLayers map, that runs totally in a local CRS. The basic layer would be a raster tile layer. The tiles will be generated by us once for each project ...
3
votes
0answers
185 views

Generate tiles using GPU

I was wondering if anyone has tried already to utilise the GPU in tile generation? I have a quite big dataset so tile generation takes a while (especially on high zoom levels) even on a quite high ...
1
vote
2answers
582 views

OpenLayers: Strange Tiling Issue (Checkered, white and grey) when panning around map

So this strange tiling issue is only occuring when moving around the map. Some things to note: 1) You can see the markers, airplane icon, and flight paths. These are all overlays, where the actual ...
4
votes
1answer
212 views

Openlayers tiles source with poor resolution, how zoom out?

I am using Openlayers to display a map from Vienna Open Data (Capabilities) in an app for mobiles, which have higher DPI screens. The resolution of the tiles is not so good (I suppose because they ...
2
votes
0answers
621 views

Building java based desktop map application using embedded database such as spatialite

I am relatively very new to building GIS based applications and have a very limited understanding in this area. So I need some help in building a java based desktop application which would generate ...
2
votes
1answer
390 views

gdal2tiles doesn't use resampling method correct?

I'm using gdal2tiles to create tiles from MODIS satellite imagery (250 m resolution) and I have noticed that I get the same bad result if I use -r near or -r bilinear (or lanczos for that matter). See ...
6
votes
3answers
212 views

Is there a software package that allows users to create map tiles?

We would like to create map tiles to be used via mobile device in the field in an offline environment. The imagery will come from our personal collection of aerial images taken via UAV.
3
votes
2answers
348 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, ...
0
votes
0answers
345 views

load custom tile over google map (on location) in android

Is there a way to load a custom map of a country over the existing country in google maps? I'm able to load my custom tiles with tileOverlay but they show in the upper-left corner of the google map ...
1
vote
0answers
203 views

GDAL and Python: How to “pad the extent” or otherwise handle band.ReadRaster() for area falling slightly outside the image bounds?

In a nutshell, I'm trying to create a bare-metal tiling utility using GDAL and Python. As you can see in the graphic below, which shows the perimeter of a raster and the OSM-structured tile index, ...
3
votes
2answers
623 views

Access Stamen tiles flavors with OpenLayers

i'm using OpenLayers (v2.13.1) and would like to use Stamen Toner tiles as background. The example is simple to understand : http://maps.stamen.com/test/openlayers.html But i'd like to use the ...
3
votes
5answers
3k views

Automatically download and merge webmap tiles into one big image?

Is there an easy way to download a bunch of web map tiles (in /z/x/y.png format) and stitch them together into a single large image? I could probably script this using ImageMagick, but would prefer ...
2
votes
1answer
193 views

gdal2tiles.py generating black tiles from .img file

I have a source HFA Erdas Imagine (.img) file which I'm trying to convert into tiles using gdal2tiles.py. I'm running: gdal2tiles.py -w google -g GOOGLEKEY input_file.img The HTML is generated ...
5
votes
2answers
180 views

ArcGIS Server: Limit creation of cache tiles to certain areas by providing a feature class

This is my first question on stackexchange; I hope it's O.K.! I am publishing a map service to ArcGIS Server 10.0. I cannot succeed to limit the creation of tiles to certain areas only, instead of ...
3
votes
0answers
356 views

Buffering a Raster with GDAL and Numpy

I am using GDAL to convert a raster dataset into a numpy.array and then using numpy to buffer the data in the raster. For example, I need to know all the regions within 100ft of a school point ...
4
votes
4answers
12k views

download ESRI World Imagery basemap for offline use?

So our search and rescue team would like to be able to view ESRI's World Imagery basemap through the free tool (ArcGIS Explorer). Thing is, we will be offline when we are in the field. So - is there ...
3
votes
1answer
2k views

Manually building a tile server

I use this instruction http://switch2osm.org/serving-tiles/manually-building-a-tile-server-12-04/ I have the problem on the step "Starting your tileserver" sudo mkdir /var/run/renderd sudo chown ...
1
vote
3answers
350 views

Stitch mapbox tiles

I have customized mapbox tiles and i need to print it on A2 size paper on high zoom level at around scale of 500 to 1000. I am thinking of stitching the adjacent tiles together to form a single big ...
3
votes
3answers
1k views

Tile server with dynamic mapnik rendering, caching, and pre-emptive rendering

I've been making some pretty (but computationally expensive) tiles with TileMill and I'd like to serve them up. First, I served them straight from TileMill. Every tile gets rendered dynamically, ...
1
vote
1answer
693 views

How to generate JPEG tiles using gdal2tiles.py

I am using gdal2tiles.py to generate tiles and packing it into MBTiles using mb-util. gdal2tiles by default generates PNG tiles. When I convert PNG tiles to JPEG large black area around tiles are left ...
1
vote
1answer
295 views

Mosaic Imagery to Tile Grid

I am hoping to come up with a script that would allow me to mosaic imagery into a polygon tile grid. My hopes is to do this with gdal or QGIS. I am wondering if anyone knows of an existing script, ...
1
vote
1answer
127 views

Can GeoWebCache serve tiles from blobstore?

Currently I use MapProxy to serve custom sqlite tile stores with a certain schema. I would like to enable GeoWebCache to do the same, but I don't know if GWC work the same way that mapproxy does. ...
0
votes
1answer
245 views

Modify Map Service Symbology via Esri JavaScript API

I have a JavaScript application built on the Esri JavaScript API that is consuming a feature service and a tiled map service from ArcGIS Online. I developed a widget that allows the user to change ...
2
votes
0answers
274 views

Splitting a bounding box into n amount of bounding boxes

Firstly, I've never worked in the GIS area before nor do I have much knowledge of the mathematics behind some of the stuff I am trying to implement. Perhaps i'm getting in over my head. My Situation ...
2
votes
1answer
79 views

Using the GeoWebCache expireCacheList parameter

I've just started looking at the cache expiration parameters for GeoWebCache and came across something that really confused me. In the documentation it says in its explanation for the <minZoom> ...
3
votes
1answer
409 views

gdal2tiles.py problem - creating mini tiles

I have a similar problem to the issue posted here (gdal2tiles problem). I have 80 GeoTIFFs (4000x4000) with EPSG:27700 projection embedded and TFW and PRJ files. These I have built into a virtual ...
1
vote
1answer
223 views

Gdal image georeferencing and gdal2tiles image flip question [duplicate]

I'm georeferencing an image using gdal and the following command: gdal_translate -of Gtiff -co tfw=yes -a_ullr 0.016264915466308594 51.505109712517786 -0.0024890899658203125 51.492018739579336 -a_srs ...
2
votes
0answers
35 views

Protect our WMS map tiles to only accessible from our site [duplicate]

We are using geoserver (2.3) to serve WMS map tiles generated from mapping data we licenced. We use leaflet on the client side to show the map (part of a ruby on rails site running on heroku). Because ...
2
votes
0answers
79 views

How can I figure out whether a sphere is intersecting the Earth between a given lon/lat range?

Given a lon/lat range that represents a tile on the Earth's surface, I need a computationally efficient way to figure out if a spherical volume defined by a point (assume ECEF coordinates) and a ...
1
vote
1answer
203 views

Gdal2tiles with tif projection failure

I downloaded this .tif image of the world (small version) from Natureal Earth and tried to convert it to tiles using Gdal2tiles in OSGeo4W. In the terminal, I used the following commmand: gdal2tiles ...
3
votes
3answers
3k 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 ...
2
votes
4answers
3k views

Cache tiles for offline use of Google/Bing aerial maps

I am currently working on a project where QGIS is used for creating and editing vector data and requires a Google or Bing aerial photo layer as a basemap. I can add Google satellite/Bing aerial ...
0
votes
0answers
79 views

Tiles cover Polygon on zoom and move

i'm using OpenLayers.Geometry.Polygon.createRegularPolygon to generate some nice circles. After i draw them to the Map i'm Moving them and after some while they where hiding by some tiles. The circle ...
1
vote
1answer
332 views

Get latest tiles from TileMill's tile server in Leaflet

My leaflet app gets the tiles from TileMill's tile server in the standard way: L.tileLayer('http://<myip>/tile/SteveCountryVic/{z}/{x}/{y}.png', { ... }); These tiles are often old, not ...
1
vote
1answer
166 views

Create tiles given images and locations; convert markers to tiles

What I need I need to convert a list of markers to a tile layer I've been googleing without success how to do this. Anyone has faced this problem and has a nice easy solution? Why I need it I've ...
4
votes
1answer
3k views

Google maps android vector rendering : how do they make it that fast?

Most of the question is in the title. If you are on android (I believe its the same on IOS) and use maps you will notice the quality of the maps app and how the vector maps are drawn in a very fluid ...
1
vote
1answer
937 views

How to change the color of a tile layer?

If I generate a very large number of map tiles (300,000), is there an easy way to let a Google Maps user change their color? For instance, is it possible to change the color scheme of a map tile ...
1
vote
0answers
65 views

Making Tiles - Varying the Zoom Level by Population Density

I want to create map tiles for all of the United States at high zoom level (12 or 13). I am using TileMill and mapping census tracts (income). However, I only need the high zoom level for populated ...
0
votes
2answers
275 views

OpenLayers shows empty tiles if I toggle my layer

I display my custom tiles with OpenLayers and I have set .olImageLoadError{display: none !important;} in my CSS to avoid displaying pink empty tiles (as described here). In this way empty tiles are ...
2
votes
1answer
585 views

Technique for splitting raster image into tiles

I have written a standalone application which renders a globe similar to GoogleEarth/WorldWind which is currently able to display raster imagery from WMS servers. The native geodesy of this ...
1
vote
1answer
647 views

TileStache + OpenLayers TMS - Tiles are rendered disorderly

I newly turned to TileStache to render Mapnik tiles because of the caching option. Before, I was using Mapnik python bindings only and it was working perfectly. Now that I use TileStache, the tiles ...
0
votes
0answers
66 views

Can I manually set the size of GeoServer's tiles?

I'm using GeoServer to generate a street name overlay that we can use with our various basemaps. It works great, but the names repeat too often to be truly beautiful. I've tried bumping up the ...