get unique entries from a complex list in r -

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i have list of lists:

      $markers                         mi  chr phys.pos    group     19  mg001   8   4803507 1     20  mg002   8   4841939 1     3   mg003   8   5268581 2     1   mg004   8   5278404 2     6   mg005   8   8352013 3     7   mg006   8   8352443 3     9   mg008   8   8354875 3     10  mg009   8   8356039 4     11  mg010   8   8357610 4     13  mg012   8   8361049 5     14  mg013   8   8361845 5     15  mg014   8   1640281 6     16  mg015   8   1640663 7      $plants                      plant   group            9   dl750   1            11  d827    1            17  dl26    1            25  d901    2            30  dr202   3            35  d356    3            52  f015    4

i list of entries unique in "group", , list of leftovers. results expected as:

(a) unique list:

      $markers                         mi  chr phys.pos    group     19  mg001   8   4803507 1     3   mg003   8   5268581 2     6   mg005   8   8352013 3     10  mg009   8   8356039 4     13  mg012   8   8361049 5     15  mg014   8   1640281 6     16  mg015   8   1640663 7      $plants                      plant   group            9   dl750   1            25  d901    2            30  dr202   3            52  f015    4

(b) leftover list:

      $markers                         mi  chr phys.pos    group     20  mg002   8   4841939 1     1   mg004   8   5278404 2     7   mg006   8   8352443 3     9   mg008   8   8354875 3     11  mg010   8   8357610 4     14  mg013   8   8361845 5      $plants                      plant   group            11  d827    1            17  dl26    1            35  d356    3

appreciate helps.

if mylist list, simply

unique <- lapply(mylist, function(x) x[!duplicated(x$group), ]) unique # $markers #       mi chr phys.pos group # 19 mg001   8  4803507     1 # 3  mg003   8  5268581     2 # 6  mg005   8  8352013     3 # 10 mg009   8  8356039     4 # 13 mg012   8  8361049     5 # 15 mg014   8  1640281     6 # 16 mg015   8  1640663     7 #  # $plants #    plant group # 9  dl750     1 # 25  d901     2 # 30 dr202     3 # 52  f015     4  leftovers <- lapply(mylist, function(x) x[duplicated(x$group), ]) leftovers  # $markers #       mi chr phys.pos group # 20 mg002   8  4841939     1 # 1  mg004   8  5278404     2 # 7  mg006   8  8352443     3 # 9  mg008   8  8354875     3 # 11 mg010   8  8357610     4 # 14 mg013   8  8361845     5 #  # $plants #    plant group # 11  d827     1 # 17  dl26     1 # 35  d356     3

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