How to keep values whose corresponding index is present?

조회 수: 2 (최근 30일)
lucksBi
lucksBi 2018년 1월 3일
댓글: lucksBi 2018년 1월 3일
Hi all
array1 = {1,1,1,0.92,0.61,0.47,0,0;1.6,1,1,1,0.6,0.5,0.4,0.8};
array2 = {[3,4,5,6];[4,5,7,8]};
I need to keep only those values in array 1 whose corresponding index value is present in array2. e.g. Result may look like this:
ResultantArray = {[1,0.92,0.61,0.47];[1,0.6,0.4,0.8]}
Thanks in advance.

채택된 답변

Walter Roberson
Walter Roberson 2018년 1월 3일
ResultantArray = arrayfun(@(Row) cell2mat(array1(Row,array2{Row})), (1:size(array1,1)).', 'uniform', 0)

추가 답변 (1개)

Star Strider
Star Strider 2018년 1월 3일
Try this:
array1 = {1,1,1,0.92,0.61,0.47,0,0;1.6,1,1,1,0.6,0.5,0.4,0.8};
array2 = {[3,4,5,6];[4,5,7,8]};
ResultantArray = cellfun(@(idx) array1(:,idx), array2, 'Uni',0);
ResultantArray{1}(1,:)
ResultantArray{2}(2,:)
ans =
1×4 cell array
{[1]} {[0.9200]} {[0.6100]} {[0.4700]}
ans =
1×4 cell array
{[1]} {[0.6000]} {[0.4000]} {[0.8000]}

카테고리

Help CenterFile Exchange에서 Matrices and Arrays에 대해 자세히 알아보기

태그

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by