An image file containing a section of map.

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3
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0answers
81 views

Data format for offline apps on iPad?

For an iPAD application (based on WhirlyGlobe) we've two modes: offline and online. It's a meteorological application so each day around 1600 layers (worldwide) per day are created on the servers. ...
3
votes
0answers
202 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 ...
3
votes
0answers
440 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 ...
2
votes
0answers
37 views

Fixing undesirable lines between tiles from SRTM contour line extraction?

I'm trying to make a South American topography map based on SRTM data on QGIS. The problem is a visual one. If the topography contours are extracted from individual SRTM tiles, it results a little ...
2
votes
0answers
437 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 ...
2
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0answers
257 views

How to split a raster into x tiles that overlapped by x km?

I have a raster that I split into three tiles by using the function Split raster in ArcMap as follows: How can I split my raster into three tiles that overlap by 2 km as follows : ?
2
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0answers
119 views

How to optimize color ramp for terrain

I'm working on a project to highlight LiDAR terrain on the web and part of the idea is to show the detail of the data at large scales. I've already read through the excellent Mapbox guide and I've got ...
2
votes
0answers
721 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
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0answers
359 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
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0answers
85 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 ...
2
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0answers
185 views

efficiently slicing tiles with gdal C API

Im working a project using the gdal C api(in a block of objective-c) to slice TMS style png tiles. The code currently works, but I'm running into some trouble optimizing to run fast enough for use on ...
2
votes
0answers
294 views

Map tiles and max/min latitude and longitude

I'm trying to build a map based on a center point lat/long, the map will always be a fixed size say 1024 by 1024. The user can chance the center point and zoom. If I populate the map with map tiles ...
2
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0answers
244 views

How can I modify the tiles size in Openscales or other ways to boost the application performance

I am developing an application in Flex that uses Openscales and GeoServer in order to provide a map in the background. It works but the perfs aren't really good; even if everything is on the same ...
2
votes
0answers
218 views

GeoServer + ImagePyramid: Request is empty where data exists

I have set up an image pyramid based on 5 levels of tiling. The data is served using the ImagePyramid plugin for GeoServer. When I do a layer preview the data is visualized just like I expect them to ...
2
votes
0answers
626 views

Tile mode in Map server

I am trying to overlay the layers that are rendered using map server over google maps.I am pretty much new to this whole thing. So I tried to go through this example here here ...
1
vote
0answers
36 views

Using Leaflet and Web Map Tile Service (WMTS)

I'm trying to use an API for rendering tiles with a Leaflet map. A link to the API looks like this and I think that the format is WMTS: ...
1
vote
0answers
21 views

tilemill resolution

I have created a map on tilemill and can export the tiles to mbtiles. However I need to determine the resolution for each zoom level. On a previous project that used different technology (tilecache) I ...
1
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0answers
41 views

OpenStreetMap coloring the map tiles by state, zip code polygons from C# VS 2013 WPF desktop application

My question is likely to close on stackoverflow. My aim is to create a map from C# VS2013 WPF desktop application (not web application) with OpenStreetMap on win7. This a colored map with US states ...
1
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0answers
45 views

is it possible to combine multiple URLs for one ol.layer.tile in openLayers 3?

I have two Image services that I would like to combine into one layer; one has higher resolution imagery that draws only at a larger scale, and other has lower resolution imagery that draws at all ...
1
vote
0answers
14 views

Desaturate tile layer in OpenLayers 3

I have a OL3 map with one tile and one vector layer. Since the features on the vector layer don't stand out enough against the tile layer in the background, I want to desaturate the tile layer. I'm ...
1
vote
0answers
19 views

How to generate dynamic tiles

I was studying the Trulia crime map and found that they were generating dynamic tiles with color block based on crime count. I am a newbie to mapping world and found how to generate static tiles, ...
1
vote
0answers
17 views

QTiles Plugin maximum store support, intensive computing time?

We try to compute 187 000 tiles with QGIS plugin QTiles in zoom level 18 (around 3000 square kilometres). There are 25 layers in there (mainly polylines and polygones). It took much longer than usual ...
1
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0answers
45 views

Example for creating tiles from image for use in mapbox-(gl)-js

I'm facing weird random tile selection issues (like floating precision causes a wrong tile to load) when using some existing static tile data with mapbox-gl-js. I'm therefore searching for an ...
1
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0answers
52 views

Disk usage for Europe (OpenStreetMap)

I would like to know a disk space usage for Europe extract (Nominatim, tile server, both data structures and rendered tiles). I have currently map server with an european country extract and I tried ...
1
vote
0answers
44 views

Old imagery WMTS

I am looking for a web imagery tile service that provides old imagery, in the same vein as Google Earth's old imagery, but one that could be integrated into an OpenLayer or Leaflet map. Any idea ? ...
1
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0answers
64 views

QGIS Openlayers tool not showing tiles, but showing question mark

We have a proxy server which I've added to QGIS, but when I load openlayers, I get a grid with lots of questions marks, yet the watermark is supplied; any ideas? Fiddler doesn't show anything out of ...
1
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0answers
39 views

Issue with TileStream Tile URL

First of all I'm new to Tilestream, MBTiles and GIS. As a part of of learning purpose I set up Tilestream with the help of tilestream tutorial and copied two MBTiles file to the tiles folder I am ...
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0answers
27 views

How to generate map tiles including world files in QGIS?

Is there any way to export bitmap tiles including world files from a QGIS project? I've tried QTiles but it seems not to support world files.
1
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0answers
70 views

How to run Mapbox Vector Tile Mini Server?

I am trying to make an offline map for the vector tiles that I've exported from Mapbox Studio (mbtiles). I found this : https://github.com/BergWerkGIS/mini-server I have it downloaded on my ...
1
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0answers
112 views

Converting *.adf files to *.xyz for XPSWMM?

i am trying to convert adf files to xyz files in order to import them to XPSWMM. i also need the elevation values. however, when i use QGIS to translate the raster files (adf files) to xyz these ...
1
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0answers
56 views

How can I render heatmap contours from QGIS into tiles?

I have a heatmap and contours in QGIS, and I want to export these heatmaps as tiles. This works well with tiff, but I want to include contours into images, to make them look better. In QGIS, I can ...
1
vote
0answers
62 views

How do I fix my SLD tile heat map when it comes up as dots?

I am currently working on an SLD heat map on GeoServer that uses tiles.There is a point in each tile with the data. From far away, the heat map looks normal. But up close it just becomes little ...
1
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0answers
70 views

TileStache PNG Optimization

A Tilestache config file has a "png options" object that passes its config straight through to the Python Imaging Library (PIL). Setting optimize: true does some kind of optimization as the file is ...
1
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0answers
46 views

openlayer 3 support for wms 1.3.0 CRS:1

I am trying to get a TileWMS layer working with the CS as CRS:1 defined in WMS1.3.0. By defining the right projection stated in CRS:1, axisorientation as 'es', I could get it working for ImageWMS. ...
1
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0answers
143 views

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 ...
1
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0answers
115 views

How to convert map scale 1:10000 to nearest zoom level 16 scale 1:9028

I am making tile map service port for this map http://mapserver.geology.sk/sbd/. When you max zoom this map, you will get scale 1:10000. Tile size is 256px. You can check it here ...
1
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0answers
79 views

ArcGIS Split Raster tool results in black rasters

I have a rather large raster that I am trying to split into small tiles in PNG format to upload to Autodesk Infrastructure. I came across the Split Raster tool and thought it would do exactly what I ...
1
vote
0answers
30 views

How does GeoServer render a Super or MegaTile

I'm working on chopping up a big mega map tile into smaller tiles at various zoom level. I'm surrounded with a problem first up in terms of how to get my big mega map tile with all the legends (with ...
1
vote
0answers
100 views

Reproject xy tiles from mercator to Gauß-Krueger in ubuntu terminal

I´ve exported a map from tilemill as mbtiles and converted them to xyz tiles with help of mbutil. The tiles should be used (for learning purpose) with mod_tile or geoserver and displayed in ...
1
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0answers
34 views

vector tiling of point set

I have large point set which I want to overlay on open-Street map. That is to create vector tiles of the point set based on zoom levels of the underlying Open-Street map. For example if the current ...
1
vote
0answers
275 views

How to use GeoWebCache tiles with default geoserver url?

I am having GWC tiles access issue when integrated in another application using GWC url. //systemname:8080/geoserver/gwc/service/wms. The error is given below. I have created new grid set ...
1
vote
0answers
23 views

How to know which Tiles build a rendered Image obtained by a Map Query?

as Test Purpose for my app, I want to know exactly, which Tiles were used to render the result image I get by query. I.e. I want to see a bounding box of 500px*300px with zoom 13 of Location ...
1
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0answers
102 views

get the tiles? (GeoWebCache, GeoServer, PostGIS, REST)

i've got a PostgreSQL (9.2.9) database, PostGIS (2.1.3) enabled - and it works fine with GeoServer (2.5.2). So by now i'm trying to make tiles of the map with the integrated GeoWebCache - but i don't ...
1
vote
0answers
54 views

Geowebcache tiles showing only when seeding and not when viewing the map

I have created a map with geoserver and postgresSQL. I have managed in geoserver to seed the layers into tiles but for some reason as you view across the map, it does not create those tiles. For ...
1
vote
0answers
120 views

Rendering a geotiff block with gdal and gdk-pixbuf - Some flaws in the result

I currently try to render a geotiff file with GTKmm\GDKmm (gdk-pixbuf). The file is a tiled geotiff with a block size of 256*256 and three rasterbands. The shortened gdalinfo output is: Driver: ...
1
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0answers
84 views

geoserver wrong tile generation on leaflet

I am creating world map with bathymetry using Geoserver 2.5.1 and leaflet. It works perfactly upto certain zoom level. but after that i get few tiles drawn in wrong color as shows in images. Does ...
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0answers
645 views

Geowebcache bounding box to tile conversion is not working properly (EPSG:4326)

I am trying to make Geoserver and built in Geowebcache work together. I have a page with google maps and I am rendering images from a published WMS layer using getTileUrl function. Unfortunately I am ...
1
vote
0answers
246 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, ...
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0answers
73 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 ...
1
vote
0answers
293 views

Geoserver Tile Generating

I'm a complete newbie at this so please excuse my lack of knowledge. I need to be able to place hundreds of thousands of points on a map. I'm using OpenLayers with Google Maps base layer and I just ...