I have two data sets:
World population (raster) in EPSG:4326, from http://sedac.ciesin.columbia.edu/data/set/gpw-v3-population-density-future-estimates/data-download
A shp file with points (distributed around the globe), also in EPSG:4326
I would like to calculate the number of people within for example 50 km from each point. What would be the best way of doing this in QGIS?