[Spanish] [Ráfaga] Nº194: dtm, immigration, netherlands, population, ice, rorschach

[Jorge Sanz]

* How to create a DTM and DSM point cloud from UAV imagery
 http://rapidlasso.com/2015/09/21/creating-dtms-from-dense-matched-points-of-uav-imagery-from-senseflys-ebee/

* Immigration origin evolution at the USA since 1850
  http://www.pewhispanic.org/2015/09/28/from-ireland-to-germany-to-italy-to-mexico-how-americas-source-of-immigrants-has-changed-in-the-states-1850-to-2013/

* The Netherlands digitized antique maps, with time line and zoomable
  http://www.topotijdreis.nl/

* Population concentration map shows how many people lives on your
half of the planet
  http://www.radicalcartography.net/index.html?your-hemisphere

* The melting of the Arctic sea and the opening of the North passage
  https://www.mapbox.com/blog/mapping-arctic-ice-polar-projection/

* An interactive that creates Rorschach prints with maps, satellite
imagery and street view
  http://rorschmap.com/?lat=41.392118&lng=2.1451700000000073&z=17

Raf