Feb 102012
 

In this posting I will try to give some advice about how to choose the right spatial data sources. I will focus on legal issues. As you will see the conclusion will have to be one based on more than one factor.

As far as I know very few people, if at all anyone, have been imprisoned for breach of copyrights pertaining to spatial data. We have often heard about how sharing digital movies may lead to high fines and imprisonment. Even linking to copyrighted material might lead you into such problems. Continue reading »

Feb 082012
 

On the former webpages of TZGISUG we availed a host of data from different sources. Among others were data on protected areas, infrastructure, demography, biological diversity, digital elevation models, Quarter Degree Grid Cells and more. Is this something we should continue doing, or is this a job better done by the actual owners of the data?

Professionally I would say that the owners of any data sets, spatial or not, should provide their data with the associated meta data, be it ISO/TC211, ISO 19139 or other. Only by being provided by their rightfull owners will we know that the data has not been tampered with or otherwise doctored in any unfashionable manner.

Continue reading »

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