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(ページの作成: Welcome to the wonderful world of Geographical Information Systems (GIS)! Quantum GIS (QGIS) is an Open Source Geographic Information System. The project was born in May of 2002 …)
 
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Welcome to the wonderful world of Geographical Information Systems (GIS)!
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地理情報システム (GIS)のすばらしい世界へようこそ!
Quantum GIS (QGIS) is an Open Source Geographic Information System. The project
+
Quantum GIS (QGIS) はオープンソースのGISです. このプロジェクトは2002年5月に開始
was born in May of 2002 and was established as a project on SourceForge in June
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され、同じ年の6月 SourceForgeのプロジェクトを立ち上げました。
of the same year. We've worked hard to make GIS software (which is traditionally
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We've worked hard to make GIS software (which is traditionally
 
expensive proprietary software) a viable prospect for anyone with basic access
 
expensive proprietary software) a viable prospect for anyone with basic access
 
to a Personal Computer. QGIS currently runs on most Unix platforms, Windows, and
 
to a Personal Computer. QGIS currently runs on most Unix platforms, Windows, and
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program that is free of cost and can be freely modified. You should have
 
program that is free of cost and can be freely modified. You should have
 
received a full copy of the license with your copy of QGIS, and you also can
 
received a full copy of the license with your copy of QGIS, and you also can
find it in Appendix [[gpl_appendix]].   
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find it in Appendix [[gpl_appendix|GNU_General_Public_License]].   
  
  

2009年8月14日 (金) 21:15時点における版

地理情報システム (GIS)のすばらしい世界へようこそ! Quantum GIS (QGIS) はオープンソースのGISです. このプロジェクトは2002年5月に開始 され、同じ年の6月 SourceForgeのプロジェクトを立ち上げました。 We've worked hard to make GIS software (which is traditionally expensive proprietary software) a viable prospect for anyone with basic access to a Personal Computer. QGIS currently runs on most Unix platforms, Windows, and OS X. QGIS is developed using the Qt toolkit http://www.trolltech.com and C++. This means that QGIS feels snappy to use and has a pleasing, easy-to- use graphical user interface (GUI).

QGIS aims to be an easy-to-use GIS, providing common functions and features. The initial goal was to provide a GIS data viewer. QGIS has reached the point in its evolution where it is being used by many for their daily GIS data viewing needs. QGIS supports a number of raster and vector data formats, with new format support easily added using the plugin architecture (see Appendix appdx_data_formats for a full list of currently supported data formats).

QGIS is released under the GNU General Public License (GPL). Developing QGIS under this license means that you can inspect and modify the source code, and guarantees that you, our happy user, will always have access to a GIS program that is free of cost and can be freely modified. You should have received a full copy of the license with your copy of QGIS, and you also can find it in Appendix GNU_General_Public_License.



Tip 1 Up-to-date Documentation


The latest version of this document can always be found at http://download.osgeo.org/qgis/doc/manual/, or in the documentation area of the QGIS website at http://qgis.osgeo.org/documentation/



Features

QGIS offers many common GIS functionalities provided by core features and plugins. As a short summary they are presented in six categories to gain a first insight.

View data

You can view and overlay vector and raster data in different formats and projections without conversion to an internal or common format. Supported formats include:


  • item spatially-enabled PostgreSQL tables using PostGIS, vector formats \footnote{OGR-supported database formats such as Oracle or mySQL are not yet supported in QGIS.} supported by the installed OGR library, including ESRI shapefiles, MapInfo, SDTS and GML.
  • Raster and imagery formats supported by the installed GDAL (Geospatial Data Abstraction Library) library, such as GeoTiff, Erdas Img., ArcInfo Ascii Grid, JPEG, PNG.
  • SpatiaLite databases (see Section label_spatialite)
  • GRASS raster and vector data from GRASS databases (location/mapset),
  • Online spatial data served as OGC-compliant Web Map Service (WMS) or Web Feature Service (WFS).


Explore data and compose maps

You can compose maps and interactively explore spatial data with a friendly GUI. The many helpful tools available in the GUI include:

  • item on the fly projection
  • item map composer
  • item overview panel
  • item spatial bookmarks
  • item identify/select features
  • item edit/view/search attributes
  • item feature labeling
  • item change vector and raster symbology
  • item add a graticule layer now via fTools plugin
  • item decorate your map with a north arrow scale bar and copyright label
  • item save and restore projects


Create, edit, manage and export data

You can create, edit, manage and export vector maps in several formats. Raster data have to be imported into GRASS to be able to edit and export them into other formats. QGIS offers the following:


  • item digitizing tools for OGR supported formats and GRASS vector layer
  • item create and edit shapefiles and GRASS vector layers
  • item geocode images with the Georeferencer plugin
  • item GPS tools to import and export GPX format, and convert other GPS formats to GPX or down/upload directly to a GPS unit (on Linux, usb: has been added to list of GPS devices)
  • item create PostGIS layers from shapefiles with the SPIT plugin
  • item improved handling of PostGIS tables
  • item manage vector attribute tables with the new Attribute table (see Section attribute table ) or Table Manager plugin
  • item save screenshots as georeferenced images


Analyse data

You can perform spatial data analysis on PostgreSQL/PostGIS and other OGR supported formats using the fTools python plugin. QGIS currently offers vector analysis, sampling, geoprocessing, geometry and database management tools. You can also use the integrated GRASS tools, which include the complete GRASS functionality of more than 300 modules (See Section grass).

Publish maps on the internet

QGIS can be used to export data to a mapfile and to publish them on the internet using a webserver with UMN MapServer installed. QGIS can also be used as a WMS or WFS client, and as WMS server.

Extend QGIS functionality through plugins

QGIS can be adapted to your special needs with the extensible plugin architecture. QGIS provides libraries that can be used to create plugins. You can even create new applications with C++ or Python!


  • Core Plugins


Add WFS Layer
Add Delimited Text Layer
Coordinate Capture
Decorations (Copyright Label, North Arrow and Scale bar)
Diagram Overlay
Dxf2Shp Converter
Georeferencer
fTools
GPS Tools
GRASS integration
Interpolation Plugin
OGR Layer Converter
Quick Print
SPIT Shapefile to PostgreSQL/PostGIS Import Tool
Mapserver Export
Python Console
Python Plugin Installer
  • Python Plugins
QGIS offers a growing number of external python plugins that are provided by the community. These plugins reside in the the official PyQGIS repository, and can be easily installed using the python plugin installer (See Section plugins).