1. 2008-01-22 [2] [GRASS-stats] subset on spatialGrid?? grass-sta Roger Bivand 2. 2008-01-19 [3] [GRASS-stats] using LOESS on spatial data grass-sta Jarek Jasiewi 3. 2008-01-16 [2] [GRASS-stats] sequence of dates by one hour grass-sta Roger Bivand 4. 2008-01-16 [2] [GRASS-stats] Convert IDL into Julian day grass-sta Roger Bivand