Re: Re: Summary:Ways to get Odd Columns&Rows of Matrix
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg1047] Re: [mg715] Re: Summary:Ways to get Odd Columns&Rows of Matrix
- From: Allan Hayes <hay at haystack.demon.co.uk>
- Date: Wed, 10 May 1995 08:35:36 -0400
Count Dracula, <lk3a at kelvin.seas.virginia.edu>, [mg715] Re: Summary:Ways to get Odd Columns&Rows of Matrix Gives the definition odd[tensor_List] := Part[ tensor, Sequence @@ (Range[1, #, 2] &) /@ Dimensions[tensor] ] Since Range has the attribute Listable this can be tidied up to odd2[tensor_List] := Part[ tensor, Sequence @@ Range[1, Dimensions[tensor], 2] ] There is little, if any, effect on the speed. Allan Hayes hay at haystack.demon.co.uk