I'm looking for world/europe/switzerland population data with a grid format. For example, 1km squares and then the population in that gridpoint.
I found one source, http://www.diva-gis.org/gdata
Description: Population density (old)
Source: CIESIN, 2000. Global gridded population database
Resolution: 30 seconds
But I'd like to know if there is anything more updated, and perhaps different file/db formats. The above source file format is:
Vector data are stored as ESRI shapefiles Grid (raster) data are stored as DIVA gridfiles
That site's file format docs are down, but here's an archive.