Map Book Qgis

[Eddie Boyum]

QGISpreviously also known as Quantum GIS) is a free (GNU GPL v2) and open source GIS application enabling the user to visualize, manage, edit, analyse data, and compose printable maps. It runs on Linux, Unix, Mac OSX, Windows and can be downloaded free of charge from qgis.org. It powers 3rd party open-source apps for mobile and tablet, Mergin Maps ([1]), QField or IntraMaps Roam.

In QGIS version 3, there are built-in features to use raster and vector data from OpenStreetMap. There is no built-in possibility to upload changes back to a OpenStreetMap server directly from QGIS. For this purpose, please use one of the Editors.

Note that QGIS caches the raster maps. Changes made on OpenStreetMap will not show up until the QGIS cache is cleared. The Clear cache button is hidden in the Settings -> Options... -> Network form.

Vector data can be loaded into QGIS from an OSM file without any extra add-ins. Use Layer -> Add Layer -> Add Vector Layer menu and specify an OSM file to be imported into a QGIS project. An OSM file can be exported from OpenStreetMap in a number different ways. For example, use the Export button at

QGIS AS AN OSM EDITOR: As of begining of July 2015, all existing versions or QGIS prior to version 2.18 are now incompatible with OSM data containing 64-bit Identifiers. This includes all newly created nodes. QGIS should no longer be used before a major version release to support 64-bit integers for nodes; it is possible that data retrieved from the database contain new nodes that would be truncated to 32 bits. This would severely impact the database if it is updated with QGIS.

Users should use another editor, until QGIS 2.0 (or any tools based on QGIS 2.0 such as the QGIS plugin for JOSM) is fixed (especially for QGIS versions built for 32-bit native OSes).

For QGIS older than version 2: The QGIS OSM Plugin lets you load in vector data from OpenStreetMap, and even edit and upload your changes. However, due to a bug related to 64-bit Identifiers, newer data is not read. See the QGIS OSM Plugin page for more info and workarounds.

The QGIS wiki provides numerous guides and video tutorials to help users of all abilities. For new users a good place to start is the Introduction to Quantum GIS video. It is also important to have a basic understanding about the #Coordinate Reference System.

QGIS allows you to to create advanced symbology (similar to Mapnik or Osmarender) in a powerful but very easy way (a few mouse clicks), see examples here [ dead link ] and a detailed video on youtube.

Earth is a three-dimensional body, roughly spherical in shape, yet the vast majority of maps are flat (2-dimesional). A Coordinate Reference System (CRS) defines a method of projecting all or part of the Earth onto a 2D surface. QGIS has support for approximately 2,700 known CRS. Some, such as WGS-84 are global projections, whereas others represent only specific regions.

When working with geo-spatial data it is essential that you are using the correct CRS. If you are lucky the projection will be specified as part of the vector file (for example, ESRI Shapefiles often include projection data in the .prj file), however you will often have to manually select the correct CRS.

To specify the CRS of a vector layer, select the layer and choice Layer->Set CRS of Layer(s).... Each layer can have a different CRS. If this is the case, you will need to convert them to the same CRS in order for them all to display correctly. The easiest way to do this is to use 'on the fly' CRS transformation:

QGIS can be used to convert between CRS. Open the input layer making sure to select the correct CRS as described above. Use Layer->Save As... to export the layer with a different CRS (you may choice between the "Project" CRS or select a CRS from QGIS's extensive list).

Here is a video tutorial describing more advanced filtering based on attributes. In this example it would be nice to only have the nature reserves where "BESLSTATUS" = 'Gllande' is true because that means they are in effect (and not just planned). Follow the tutorial in the video to archive this.

QGIS Cloud is your powerful Web-GIS platform for publishing maps, data and services on the internet. Create and edit professional maps with all the capabilities from QGIS. With only a few short mouse-clicks you can share your work on qgiscloud.com with the public.

Create complex maps with QGIS desktop, using any of the styling possibilities offered by QGIS desktop. Just as you have always done with QGIS desktop. Then simply publish data and maps with the QGIS Cloud pluign. All this in just a few minutes, it's as simple as it gets.

QGIS Cloud gives you a full-featured PostgreSQL 9 databases, extended with PostGIS 2. Create new databases directly from the QGIS Cloud plugin with just a click. Manage your databases with any compatible management tool, such as pgAdmin3, the QGIS Browser or the QGIS DB-Manager. You have full access to all features of a PostgreSQL/PostGIS database.

Share your maps and data over OGC (Open Geospatial Consortium) compliant web services. Display your maps via WMS, or download the data via WFS. With WFS-T, you can edit your data directly over the web service. Or use the QGIS Cloud WebGIS and Mobile Client integrated in QGIS Cloud.

Offer high quality maps via WMS for printing. Just create as many print compositions as you please with QGIS Desktop, with all the options it offers to you. Compose maps for arbitrary paper formats, with printing resolution up to 1200 dpi.

If you want to share your services only to a restricted group of people, then you can limit access to the resources. For this, you'll need QGIS Cloud Pro. With QGIS Cloud Free, all QGIS Cloud services are openly accessible.

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