How to remove indexed set of rows from a cell array

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james sinos
james sinos 2021-8-29
编辑： Wan Ji 2021-8-29
i have a cell array "corb " = 10×5 cell array
1- first question :
i want to find the indexes of all elements in the first column , 100000< element <300000
i tried this it doesn't work : row_indices = find(cell2mat(corb(:,1))>100000 & corb(:,1))<300000)
2- Second question :
once i have the vector containing row indexes values lets say its V=[ 3;5;10]
I would like to create a new cell array that has all of the rows from the original cell array EXCEPT for the rows specified by V. ( remove those rows).
so how to proceed

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回答（2 个）

the cyclist
the cyclist 2021-8-29
编辑：the cyclist 2021-8-29
% Identify rows
row_indices = find(cell2mat(corb(:,1))>100000 & cell2mat(corb(:,1))<300000);
% Define new array that is the same as corb, but and remove rows
corb2 = corb;
corb2(row_indices,:) = [];
Wan Ji
Wan Ji 2021-8-29
编辑：Wan Ji 2021-8-29
Try this
logical_indices = arrayfun(@(i)corb{i,1}(1)>100000&corb{i,1}(1)<300000,(1:1:size(corb))');
row_indices = find(logical_indices); % actually this line can be deleted to save time
corb2 = corb(~logical_indices,:); % this is what you want

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