data.table
lägger till icke-equi-kopplingar från v 1.9.8
library(data.table) #v>=1.9.8
setDT(sdata); setDT(fdata) # converting to data.table in place
fdata[sdata, on = .(fyear >= byear, fyear < eyear), nomatch = 0,
.(id, x.fyear, byear, eyear, val)]
# id x.fyear byear eyear val
# 1: 1 1998 1995 2000 1
# 2: 2 1998 1995 2000 1
# 3: 3 1998 1995 2000 1
# 4: 5 1998 1995 2000 1
# 5: 8 1998 1995 2000 1
# 6: 13 1998 1995 2000 1
# 7: 1 1999 1995 2000 1
# 8: 2 1999 1995 2000 1
# 9: 3 1999 1995 2000 1
#10: 5 1999 1995 2000 1
#11: 8 1999 1995 2000 1
#12: 13 1999 1995 2000 1
#13: 1 2000 2000 2005 5
#14: 2 2000 2000 2005 5
#15: 3 2000 2000 2005 5
#16: 5 2000 2000 2005 5
#17: 8 2000 2000 2005 5
#18: 13 2000 2000 2005 5
#19: 1 2001 2000 2005 5
#20: 2 2001 2000 2005 5
#21: 3 2001 2000 2005 5
#22: 5 2001 2000 2005 5
#23: 8 2001 2000 2005 5
#24: 2 2002 2000 2005 5
#25: 3 2002 2000 2005 5
#26: 2 2003 2000 2005 5
#27: 3 2003 2000 2005 5
# id x.fyear byear eyear val
Du kan också få detta att fungera med foverlaps
i 1.9.6 med lite mer ansträngning.