The QDGC shapefiles contain center lon/lat coordinates and the QDGC string for the different squares.
Open day on map making and GIS at the Conservation Resource Centre, 14 November
The Conservation Resource Centre (CRC) is a small (but helpful!) non-profit educational organisation based in Arusha that works with students and researchers in science and conservation.
If you’re interested in learning about using maps, using a GPS, or making your own maps, the CRC is hosting an informal ‘open day’ for World GIS Day on the 14th of November, which will be an opportunity for hands-on use of GPS units, a chance to talk to people who use GPS and computerised mapping professionally, and to learn about free and open-source applications for making your own maps.
OpenStreetMap has updated their satellite imagery covering parts of Arusha and Serengeti. The imagery is delivered by Bing (Microsoft) and allows for tracing of roads and buildings in the mentioned areas. Microsoft has updated much of their imagery covering Tanzania the last year. The additions covered in this article represent important foundations for further developing the OpenStreetMap maps.
For those of you who do not know what Wikipedia is, the short version is that Wikipedia is “[..] a multilingual, web-based, free-content encyclopedia project based on an openly editable model.” (Source: Wikipedia). This article is about relevant GIS/geography articles in Wikipedia related to Tanzania.
A version of this article was posted back in August 2007. Since then the body of literature on Tanzania in Wikipediahas continuously been growing. Both the English and the Swahili articles. The number of Swahili articles as of today number 24.126. The articles cover a wide number of themes, many of the not directly related to Tanzania.
In 2009 Brian Kuns with Stocholm University wrote a memo titled “Towards an Inventory of Historical Aerial Photos of Kenya, Tanzania and Uganda”. The memo represents a preliminary overview of archival resources containing historical aerial photographs of East Africa.
I have taken a look at the memo and in this article I will try to focus on any Tanzanian sources of data in most part using Kuns memo. I will also throw in some reflections of my own on historical aerial photographs and what lies ahead of us.
The recent changes in alternatives for communicating with other participants in the TZGISUG community involves option for commenting on postings on this website. It also involves an option to post messages in dedicated forums.
This posting is a walk-through of the different options for interacting through the TZGISUG website.
The Tanzania GIS User group mailing list has been a rather quiet place the last year or so. Much of this is due to the fact that many GIS practitioners find answers to their questions in forums and mailing lists elsewhere. After some discussion and a lot of thought, time has come to make some changes for TZGISUG. Without being totally revolutionary, we hope that you will all follow us on this journey towards more structure and more communication in our community.
We are now offering an addition to the mailing list on the TZGISUG website – a set of forums with the themes “Announcements”, “FAQ” and “General”. The mailing list will not be discontinued, but we encourage people to use the forum on the TZGISUG website for announcements and comments to Frequently Asked Questions (FAQ). Our rationale is to focus our community somewhat. Basically we see the need to build a centralized knowledge base – strengthening the web site as a communication platform is one way forward. We also need to start thinking about how we can refine a meta-database on spatial data as well – while there isn’t much call for hosting data ourselves, maintaining a directory of ‘how-to-find spatial data’ IS probably worthwhile, and the forums will allow discussion about the various merits of the datasets.
Finding data online for Tanzania has proved to be a bit of a challenge. This article provides an overview of publicly available sources. We are sure more exists, so just post comments to this message and we will keep updating the table.
Ideally data should be provided by its owners with appropriate meta data. We have decided to minimize our provisions of data because of this. You will find the sources not to be the original ones, but the files might still be useful.
Your input to this process is desired. Please use the commenting system to point us in the right direction for our effort to make an initial meta database for spatial data in Tanzania.
Hillshades are made by processing georeferenced digital elevation models. The process places a virtual light source above an elevation model and calculates which areas are lightened up and which fall in the shadow. Light characteristics, vertical/geographical source will be determinant for the hillshade.
Some years ago I prepared a hillshade model for Tanzania. It was fun and before I knew it I had prepared elevation models for seven more countries.
This article points to a file gallery where the files are available for download.
In this article we will give an overview of where you can download shapefiles based on OSM data and also how you can contribute to the project.