QGisRasterCatalog

Dernière modification : 2009/08/21 22:13
Raster Catalog plugin/application for QGis

About

This application can be used as a standalone app based on QGis API, but also as a QGis plugin.
It will allow you to easily find raster maps corresponding to geographic coordinates.

data/rasterCatalog/ChooseFlorida.png

See more screenshots

Installation


What's needed ?

rasterCatalog 0.2

You will need :
  • QGis with python bindings (tested with QGis 1.0.2 on Ubuntu Jaunty)
  • PyQt
  • Sqlite

From archive

            Download rasterCatalog_0.2.tar.gz

            Extract to your python plugins directory
                eg: /usr/share/qgis/python/plugins/ for all users
                                ~/.qgis/python/plugins/ for only one user
            Activate the plugin via the plugin manager.
            
            See QGis documentation for more details.

            It should work with plugin installer, please report any malfunction. (buggerone (at) gmail (dot) com)

From SVN

            Check out the current trunk
svn co svn://svn.tuxfamily.org/svnroot/scrippets/scripts/trunk/qgis/rasterCatalog

        or a tagged version.
svn co svn://svn.tuxfamily.org/svnroot/scrippets/scripts/tags/qgis/rasterCatalog/0.2

            Use make to install it to ~/.qgis/python/plugins/rasterCatalog

You can also browse source code.


Getting started

First you will need to scan some directories to find raster maps :
  • go to the Configuration tab
  • add some directories to scan via the + button
  • to create thumbnails of your maps, check the Generate Thumbnail box
You can also change the Storage path. This indicates where thumbnails will be stored.

Then go back to Map tab
Click on the button showing a map and choose a point in the world map.
When a point is choosed, list of maps containing this point is displayed in the Rasters maps list.
Clicking in this list will :
  • display the thumbnail of this map if existing
  • allow you to show this map in the map zone
  • let you Add it to QGis as a new layer (if used as a plugin)

Usage


Start

If used as a plugin, add it with QGis Plugin manager. Start it by clicking on the map button

To use as a standalone application, just launch rasterCatalog.py from the installed dir :
python rasterCatalog.py


Map tab

data/rasterCatalog/resized_MapTabItf.png
This is the principal tab.

On the right side :
  • Tool bar
    • Pan the displayed map
    • Zoom in the displayed map
    • Zoom out the displayed map
    • Choose a point in the displayed map and then search for maps containing this point
  • Map zone : display the current map (a world map by default)
On the left side :
  • Rasters maps: List of maps containing the selected point
  • buttons :
    • world: go back to the world map
    • Show map: display the selected map in Rasters maps to map zone
When it is started as a QGis plugin, 2 more buttons are displayed :
    • Add: insert the selected map to QGis
    • Load: load the QGis selected layer into map zone

Database tab

data/rasterCatalog/resized_DatabaseTab.png

This tab allow you to show the list of known maps
  • Load: load the database from disk (~/.qgis/rasterCatalog.sqlite)
  • Show map: load the current selected map to map zone in Map tab

Configuration tab

data/rasterCatalog/resized_ConfigurationTab.png

Scan

  • Maps directories: list of directories containing raster maps
    • +: add a new directory
    • -: remove the selected directory
  • Maps extensions: list of file extensions to be searched for. Extensions are without dot and separated by comma. They are not case sensitive.
  • Generate thumbnails: check to create little images of each map
  • Start scan: scan directories for maps and add them to database. A progress bar is displayed during thumbnail generation.

Paths

  • Storage path: directory where thumbnails will be stored
  • GMT path: not yet used
  • Imagemagick path: not yet used
The button Save will store your configuration data to ~/.qgis/rasterCatalog.conf


Licence


This application is licensed under GNU GPLv2

Some credits goes to :

ToDo


Quick list of future improvements :
  • make it compatible with QGis 1.0 0.2
  • interface to GMT for map generation
  • display selected raster map box in map zone
  • l10n / i18n
  • allow DB modifications from the interface
    • coordinate reference system 0.2
  • also import the projection in QGis 0.2
  • replace QSql by sqlite3 0.2
  • compatibility with windows
    • need more testing

Bugs

  • crash with QGis < 1.0.2 when doing multiple scans

Old versions

rasterCatalog 0.1

You will need :
  • QGis with python bindings (tested with QGis 0.9.2rc1 on Ubuntu Gutsy)
    • svn trunk should work with QGis 1.0
  • PyQt (tested with 4.3.2)
  • QtSql
  • Sqlite (tested with 3.4.2)
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