[Ráfaga] Nº1751: dem, coffee, mining

Jorge Sanz xurxosanz at gmail.com
Mon Jan 31 23:50:19 PST 2022

Nº1751: dem, coffee, mining

Tue, 01 Feb 2022 by Raf

* A tutorial to learn how to convert a digital elevation model (DEM)
along a river into a relative elevation model (REM) with QGIS using a
series of steps that include the inverse distance-weighted
interpolation method (IDW)


* A new model predicts a general decline by 2050 in the Earth's total
area suitable for coffee cultivation, as climate change will cause the
best places to move away from the tropics


* In Venezuela's Bolivar and Amazon states, 3,718 points of mining
activity have been identified, most of them illegal, with clandestine
airstrips used for cross-border organized crime to dispatch valuable
shipments of gold and drugs [ES]



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