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How to remove from the data the rows of with fixed number of elements?
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$begingroup$
Consider the data which has the form
data = {{x1,y1,z1},{x2,y2,z2,t2},{x3,y4,z4,t4},{x5,y5,z5},...}
How to remove the rows containing three elements from the data?
I.e., to obtain
dataprime = {{x2,y2,z2,t2},{x3,y4,z4,t4},...}
data filtering
asked 3 hours ago
John TaylorJohn Taylor
736211
$endgroup$
add a comment |
$begingroup$
Consider the data which has the form
data = {{x1,y1,z1},{x2,y2,z2,t2},{x3,y4,z4,t4},{x5,y5,z5},...}
How to remove the rows containing three elements from the data?
I.e., to obtain
dataprime = {{x2,y2,z2,t2},{x3,y4,z4,t4},...}
data filtering
asked 3 hours ago
John TaylorJohn Taylor
736211
$endgroup$
1
$begingroup$
Maybe you ask forDeleteCases[data, _?(Length[#] == 3 &)]...
$endgroup$
– Henrik Schumacher
3 hours ago
$begingroup$
@HenrikSchumacher : sorry, already corrected this.
$endgroup$
– John Taylor
3 hours ago
add a comment |
$begingroup$
Consider the data which has the form
data = {{x1,y1,z1},{x2,y2,z2,t2},{x3,y4,z4,t4},{x5,y5,z5},...}
How to remove the rows containing three elements from the data?
I.e., to obtain
dataprime = {{x2,y2,z2,t2},{x3,y4,z4,t4},...}
data filtering
asked 3 hours ago
John TaylorJohn Taylor
736211
$endgroup$
Consider the data which has the form
data = {{x1,y1,z1},{x2,y2,z2,t2},{x3,y4,z4,t4},{x5,y5,z5},...}
How to remove the rows containing three elements from the data?
I.e., to obtain
dataprime = {{x2,y2,z2,t2},{x3,y4,z4,t4},...}
data filtering
data filtering
asked 3 hours ago
John TaylorJohn Taylor
736211
asked 3 hours ago
John TaylorJohn Taylor
736211
edited 3 hours ago
John Taylor
asked 3 hours ago
John TaylorJohn Taylor
736211
asked 3 hours ago
John TaylorJohn Taylor
736211
asked 3 hours ago
John TaylorJohn Taylor
736211
736211
1
$begingroup$
Maybe you ask forDeleteCases[data, _?(Length[#] == 3 &)]...
$endgroup$
– Henrik Schumacher
3 hours ago
$begingroup$
@HenrikSchumacher : sorry, already corrected this.
$endgroup$
– John Taylor
3 hours ago
add a comment |
1
$begingroup$
Maybe you ask forDeleteCases[data, _?(Length[#] == 3 &)]...
$endgroup$
– Henrik Schumacher
3 hours ago
$begingroup$
@HenrikSchumacher : sorry, already corrected this.
$endgroup$
– John Taylor
3 hours ago
1
1
$begingroup$
Maybe you ask for
DeleteCases[data, _?(Length[#] == 3 &)]...$endgroup$
– Henrik Schumacher
3 hours ago
$begingroup$
Maybe you ask for
DeleteCases[data, _?(Length[#] == 3 &)]...$endgroup$
– Henrik Schumacher
3 hours ago
$begingroup$
@HenrikSchumacher : sorry, already corrected this.
$endgroup$
– John Taylor
3 hours ago
$begingroup$
@HenrikSchumacher : sorry, already corrected this.
$endgroup$
– John Taylor
3 hours ago
add a comment |
2 Answers
2
active
oldest
votes
$begingroup$
Any one of these would do:
Cases[data, Except[_?(Length[#] == 3 &)]]
DeleteCases[data, _?(Length[#] == 3 &)]
Select[data, Length[#] != 3 &]
Delete[data, Position[data, _?(Length[#] == 3 &)]]
data /. {_, _, _} -> Nothing
data /. {Repeated[_, {3}]} -> Nothing
They all return: {{x2, y2, z2, t2}, {x3, y4, z4, t4}}
answered 3 hours ago
MarcoBMarcoB
36.3k556112
$endgroup$
add a comment |
$begingroup$
Also
Pick[data, Unitize[-3 + Length /@ data], 1]
answered 3 hours ago
kglrkglr
186k10202421
$endgroup$
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Any one of these would do:
Cases[data, Except[_?(Length[#] == 3 &)]]
DeleteCases[data, _?(Length[#] == 3 &)]
Select[data, Length[#] != 3 &]
Delete[data, Position[data, _?(Length[#] == 3 &)]]
data /. {_, _, _} -> Nothing
data /. {Repeated[_, {3}]} -> Nothing
They all return: {{x2, y2, z2, t2}, {x3, y4, z4, t4}}
answered 3 hours ago
MarcoBMarcoB
36.3k556112
$endgroup$
add a comment |
$begingroup$
Any one of these would do:
Cases[data, Except[_?(Length[#] == 3 &)]]
DeleteCases[data, _?(Length[#] == 3 &)]
Select[data, Length[#] != 3 &]
Delete[data, Position[data, _?(Length[#] == 3 &)]]
data /. {_, _, _} -> Nothing
data /. {Repeated[_, {3}]} -> Nothing
They all return: {{x2, y2, z2, t2}, {x3, y4, z4, t4}}
answered 3 hours ago
MarcoBMarcoB
36.3k556112
$endgroup$
add a comment |
$begingroup$
Any one of these would do:
Cases[data, Except[_?(Length[#] == 3 &)]]
DeleteCases[data, _?(Length[#] == 3 &)]
Select[data, Length[#] != 3 &]
Delete[data, Position[data, _?(Length[#] == 3 &)]]
data /. {_, _, _} -> Nothing
data /. {Repeated[_, {3}]} -> Nothing
They all return: {{x2, y2, z2, t2}, {x3, y4, z4, t4}}
answered 3 hours ago
MarcoBMarcoB
36.3k556112
$endgroup$
Any one of these would do:
Cases[data, Except[_?(Length[#] == 3 &)]]
DeleteCases[data, _?(Length[#] == 3 &)]
Select[data, Length[#] != 3 &]
Delete[data, Position[data, _?(Length[#] == 3 &)]]
data /. {_, _, _} -> Nothing
data /. {Repeated[_, {3}]} -> Nothing
They all return: {{x2, y2, z2, t2}, {x3, y4, z4, t4}}
answered 3 hours ago
MarcoBMarcoB
36.3k556112
edited 2 hours ago
answered 3 hours ago
MarcoBMarcoB
36.3k556112
answered 3 hours ago
MarcoBMarcoB
36.3k556112
answered 3 hours ago
MarcoBMarcoB
36.3k556112
36.3k556112
add a comment |
add a comment |
$begingroup$
Also
Pick[data, Unitize[-3 + Length /@ data], 1]
answered 3 hours ago
kglrkglr
186k10202421
$endgroup$
add a comment |
$begingroup$
Also
Pick[data, Unitize[-3 + Length /@ data], 1]
answered 3 hours ago
kglrkglr
186k10202421
$endgroup$
add a comment |
$begingroup$
Also
Pick[data, Unitize[-3 + Length /@ data], 1]
answered 3 hours ago
kglrkglr
186k10202421
$endgroup$
Also
Pick[data, Unitize[-3 + Length /@ data], 1]
answered 3 hours ago
kglrkglr
186k10202421
answered 3 hours ago
kglrkglr
186k10202421
answered 3 hours ago
kglrkglr
186k10202421
answered 3 hours ago
kglrkglr
186k10202421
186k10202421
add a comment |
add a comment |
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$begingroup$
Maybe you ask for
DeleteCases[data, _?(Length[#] == 3 &)]...$endgroup$
– Henrik Schumacher
3 hours ago
$begingroup$
@HenrikSchumacher : sorry, already corrected this.
$endgroup$
– John Taylor
3 hours ago