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The mr.sid Nasa landsat dataset (https://zulu.ssc.nasa.gov/mrsid/
has the advantage of being really compact and allows to fit whole
Africa on two DVDs. It also covers the whole world. Unfortunately
this dataset is far from reaching the original 30m resolution of the
imagery because of a much too strong compression. The false
colorization also does not always allow to read the terrain easily
but can eventually help to contrast details.
You can check the difference here :
SaharaMaps is not providing images alone. They are packaged with
SaharaMaps software that will allow you, not only to browse the
imagery efficiently and smoothly, but much more.
SaharaMaps is providing a country like Libya on one DVD (Libya at 30m
represents the equivalent of 121 12000x12000 images) packed with
other datasets. It includes, for example, 90m-resolution elevation
data that will allow you to generate 3D views of the terrain.
You will also be able to export/print maps with a customizable
lat/lon grid overlay or UTM grid overlay. The results on
photo-quality printers are quite amazing.
Please do not hesitate to contact me if you have any additional
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