License

Creative Commons License


This work is licensed under a
Creative Commons Attribution-Share? Alike 3.0 Unported License.

Example
thumbnail
qdgc_02_country_overview.png
   
QDGC - Quarter Degree Grid Cells (or QDS - Quarter degree Squares) are a way of dividing the longitude latitude degree square cells into smaller squares, forming in effect a system of geocodes. QDGC represents a way of making (almost) equal area squares covering a specific area to represent specific qualities of the area covered. The squares themselves are based on the degree squares covering earth. Providing prepared files for this purpose makes it possible to use the standard with a proper reference.




Background info: Related articles:
Sample website: Shapefile downloads:


Smaller countries should use QDGC files with smaller squares. Hence Rwanda should probably use QDGC level 3 or below.

Paper in progress - current article overview
By: System Administrator  on: Thu 17 of Apr, 2008 [20:50 UTC]  (261 reads)
Papers
A key paper on the extension of QDGC is under preparation and will probably be presented a bit later this year. The paper will focus on describing historical use of QDGC as presented by the Avian Demography Unit at the University of Cape Town, South Africa. Furthermore the paper will describe an extension of the QDGC which is suitable for global use. In the meantime I would encourage reading up on articles using the original QDGC. This article represents a short list.
Read More (1085 bytes) Print
National level QDGC files for Africa
By: ragnvald  on: Tue 30 of Oct, 2007 [22:46 UTC]  (1625 reads)
QDGC releases
This is an announcement of the availability of Quarter Degree Grid Cells (QDGC) on a national level for African countries.
Read More (14172 bytes) Print

All users of QDGC (of any standards) are welcome to post references, notes and sample maps on this website. Whatever you've got send it to ragnvald (at) mindland.com and he will process it for publication.

Created by: admin last modification: Friday 07 of December, 2007 [07:43:33 UTC] by ragnvald

RSS Wiki rss Articles RSS Image Galleries RSS File Galleries