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Adding maps

From qlandkartegt

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(Freely available maps)
(Freely available maps)
Line 55: Line 55:
* [[#Austria|Austria]]
* [[#Austria|Austria]]
* [[#Belgium|Belgium]]
* [[#Belgium|Belgium]]
 +
* [[#Brasil|Brasil]]
* [[#Canada|Canada]]
* [[#Canada|Canada]]
* [[#Czech Republic|Czech Republic]]
* [[#Czech Republic|Czech Republic]]
Line 128: Line 129:
* [http://sourceforge.net/projects/qlandkartegt/files/WMS%20Maps/belgium_topo.zip/download Topo Belgium] 1:10000, 1:50000, 1:100000 WMS-Map Date 15.11.2011
* [http://sourceforge.net/projects/qlandkartegt/files/WMS%20Maps/belgium_topo.zip/download Topo Belgium] 1:10000, 1:50000, 1:100000 WMS-Map Date 15.11.2011
 +
 +
=== Brasil ===
 +
 +
* [http://sourceforge.net/projects/qlandkartegt/files/WMS%20Maps/brasil_wms_tk25.xml/download Topo Brasil] 1:25000-1:250000 WMS-Map Date 24.01.2012
=== Canada ===
=== Canada ===

Revision as of 15:26, 24 January 2012

Maps fall into three main categories in terms of how they are added to QLandkarte GT: raster, vector and streaming. The former two may be maps that you have purchased, downloaded off the Web or scanned in yourself but the last is accessed streaming from a map server.

Raster maps
These are your basic raster images (i.e. non-vector like PNGs and JPEGs) of maps. QLandkarte GT requires raster maps to use the GeoTIFF format (a georeferenced TIFF format that contains information about the location of the map on the globe). The Canadian GeoBase, for example, provides its data (maps and aerial photographs) on the GeoTIFF format. Other formats may need converting.
For raster maps without any meta-data, QLandkarte GT has tools with which you can georeference a map yourself. This way you can scan your own maps and use them with QLandkarte GT. You can also download maps where these are available. The National Land Survey of Iceland, for example, provides free to download scans from its archives.
Vector maps
Vector maps are particularly useful to overlay maps with other maps. These can for example be contour maps or maps of points of interest which can be overlaid on top of a background raster or vector map.
QLandkarte GT supports the old Garmin TDB vector format. This provides information on IMG map files which need to accompany the TDB file, but QLandkarte GT does not support IMG maps directly. The new Garmin GMAP map format is not supported.
Streaming maps
QLandkarte GT supports two streaming map protocols; the Tile Map Service (TMS) and The Web Map Service (WMS). Both are protocols that allows georeferenced maps to be served over the internet. TMS will request particular tiles whereas WMS requests a map with a particular bounding box with specific information. WMS is thus more powerful whereas TMS maps are faster. QLandkarte GT currently leaves the WMS work to GDAL so you need to have compiled GDAL with WMS map support to connect to a WMS server.
Both TMS and WMS maps can be opened by loading an special XML description file. Some servers provide these XML files, but others can be constructed with a bit of work. For available XML files, see the collection of #freely available maps, below.
Note that the map-server can get very slow so sometimes it may be better to try later.

Loading maps to QLandkarte GT

If you just want to quickly load a map, go to FileLoadMap and select the map. To permanently add a map to QLandkarte GT, you create a map collection. These are stored in so-called QMAP definition files that are displayed in the map tab in the toolview on the left.

  1. Select Maps(F1) → Edit/Create Map(F6) and select "Create map collection from existing geo-referenced files." from the combo-box.
  2. Create a new QMAP file or load an existing one you wish to modify.
  3. Optionally add a comment and tick if you want it to use quadratic zoom.

Collections can contain several layers which are activated depending on the zoom level. Each layer can have multiple maps but these must all share the same projection. For example, you could have a set of detailed 1:25 000 maps in the top layer while putting a larger 1:1 000 000 map into the next layer overview that would kick in at a higher zoom level. Maps can be either XML files, raster or vector maps.

  1. Press Add or Edit' to add or edit a map layer.
  2. Choose the maps to include and how many zoom levels to span.
  3. Hit Save.

Tile service maps

As of version 1.3.1, QLandkarte GT has a simpler way of adding a TMS map:

  1. Select the OSM by double-clicking on the --- OSM --- map in the raster map tab.
  2. Right click on the map entry and select Info/Config.

There you can pick which of the built-in maps you'd like active or add your own. The placeholders are described in the dialog. When the OSM map is selected, a drop-down box appears in the status bar. There you can switch between the various TMS maps you have configured.

Note: For historical reasons the TMS feature is currently incorrectly titled --- OSM ---. This will be changed to --- Tile Server --- in the next release.

Freely available maps

Ignoring for a moment that there is no such thing as a free map, there are a number of ways to access maps on line free of charge. The bulk of these have been created by government agencies (and thus paid for by taxpayers) who have made them freely available to the general public.

TODO: The maps of each country/region should be put up in a table with columns to identify whether they are vector, raster or WMS and possibly the copyright status.

Austria

Source Map Type Description Date checked
Geoland.at austria.zip WMS Three maps, an ortho, and two scans a tk50 and a tk200 2012.01.12.
KAGIS kaernten_wms.xml WMS (Kärnten) 1:50 000 2012.01.12
Amt der niederösterreichischen Landesregierung niederoesterreich.xml WMS Lower Austria map (incl. Wienna); 1:50 000 2011.06.28.
Geoland.at Ortho Austria WMS 1:100 000 2011.06.22.
Digitales Oberösterreichisches Raum-Informations-System upper_austria.xml WMS 1:50 000 2011.06.29.
Land Salzburg salzburg_wms.xml WMS 1:100 000 2011.087.08.
Land Vorarlberg Topo Vorarlberg WMS 1:50 000 2011.07.08.

Belgium

  • Topo Belgium 1:10000, 1:50000, 1:100000 WMS-Map Date 15.11.2011

Brasil

Canada

Czechia

Estonia

Germany

Iceland

Italy

Japan

Lithuania

Norway

Poland

Portugal

Serbia

Spain

Switzerland

USA

  • Topo USA 1:50.000 WMS-Map Date 25.07.2011
  • Ortho USA 1:50.000 WMS-Map Date 25.07.2011
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