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What's the best way to shorten this?

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Hans123
Hans123 2019 年 5 月 9 日
コメント済み: Adam Danz 2019 年 5 月 13 日
This is a very lengthy code for something repetitive, I want to know whether there is a simpler, more efficient way of doing this.
The purpose of the code is to load text files and trim them according to the same criteria and check which one is the shortest and use the shortest length in calculations that happen later in the code.
T1 = dlmread("Trial 1");
T2 = dlmread("Trial 2");
T3 = dlmread("Trial 3");
T4 = dlmread("Trial 4");
T5 = dlmread("Trial 5");
T6 = dlmread("Trial 6");
T7 = dlmread("Trial 7");
T8 = dlmread("Trial 8");
T9 = dlmread("Trial 9");
T10 = dlmread("Trial 10");
%removal of unwanted elements from the raw data array
T1(T1(:,11)<=0 ,:) = [];
T1(T1(:,3)==25 ,:) = [];
T1(T1(:,3)<500 ,:) = [];
T1(T1(:,5)==0 ,:)= [];
T1(find(T1(:,12)>780,1):end, :) = [];
T2(T2(:,11)<=0 ,:) = [];
T2(T2(:,3)==25 ,:) = [];
T2(T2(:,3)<500 ,:) = [];
T2(T2(:,5)==0 ,:)= [];
T2(find(T2(:,12)>780,1):end, :) = [];
T2(T2(:,11)<=0 ,:) = [];
T3(T3(:,3)==25 ,:) = [];
T3(T3(:,3)<500 ,:) = [];
T3(T3(:,5)==0 ,:)= [];
T3(find(T3(:,12)>780,1):end, :) = [];
T4(T4(:,11)<=0 ,:) = [];
T4(T4(:,3)==25 ,:) = [];
T4(T4(:,3)<500 ,:) = [];
T4(T4(:,5)==0 ,:)= [];
T4(find(T4(:,12)>780,1):end, :) = [];
T5(T5(:,11)<=0 ,:) = [];
T5(T5(:,3)==25 ,:) = [];
T5(T5(:,3)<500 ,:) = [];
T5(T5(:,5)==0 ,:)= [];
T5(find(T5(:,12)>780,1):end, :) = [];
T6(T6(:,11)<=0 ,:) = [];
T6(T6(:,3)==25 ,:) = [];
T6(T6(:,3)<500 ,:) = [];
T6(T6(:,5)==0 ,:)= [];
T6(find(T6(:,12)>780,1):end, :) = [];
T7(T7(:,11)<=0 ,:) = [];
T7(T7(:,3)==25 ,:) = [];
T7(T7(:,3)<500 ,:) = [];
T7(T7(:,5)==0 ,:)= [];
T7(find(T5(:,12)>780,1):end, :) = [];
T8(T8(:,11)<=0 ,:) = [];
T8(T8(:,3)==25 ,:) = [];
T8(T8(:,3)<500 ,:) = [];
T8(T8(:,5)==0 ,:)= [];
T8(find(T8(:,12)>780,1):end, :) = [];
T9(T9(:,11)<=0 ,:) = [];
T9(T9(:,3)==25 ,:) = [];
T9(T9(:,3)<500 ,:) = [];
T9(T9(:,5)==0 ,:)= [];
T9(find(T9(:,12)>780,1):end, :) = [];
T10(T10(:,11)<=0 ,:) = [];
T10(T10(:,3)==25 ,:) = [];
T10(T10(:,3)<500 ,:) = [];
T10(T10(:,5)==0 ,:)= [];
T10(find(T10(:,12)>780,1):end, :) = [];
L1=length(T1);
L2=length(T2);
L3=length(T3);
L4=length(T4);
L5=length(T5);
L6=length(T6);
L7=length(T7);
L8=length(T8);
L9=length(T9);
L10=length(T10);
Lmin = min([L1(:);L2(:);L3(:);L4(:);L5(:);L6(:);L7(:);L8(:);L9(:);L10(:)]);
  3 件のコメント
Hans123
Hans123 2019 年 5 月 13 日
thank you for your inputs, I really appreciate it!

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採用された回答

Adam Danz
Adam Danz 2019 年 5 月 9 日
編集済み: Adam Danz 2019 年 5 月 13 日
This should get you started but it's not tested and there will likely be some kinks to work out. I'd be glad to help more if needed.
trials = ["Trial 1", "Trial 2", "Trial 3", "Trial 4", "Trial 5", ...
"Trial 6", "Trial 7", "Trial 8", "Trial 9", "Trial 10" ];
nTrials = numel(trials);
T = cell(size(trials));
for i = 1:nTrials
T{i} = dlmread(trials(i));
%removal of unwanted elements from the raw data array
T{i}(T{i}(:,11)<=0 ,:) = [];
T{i}(T{i}(:,3)<500 ,:) = [];
T{i}(T{i}(:,5)==0 ,:)= [];
T{i}(find(T{i}(:,12)>780,1):end, :) = [];
end
L = cellfun(@length, T,'UniformOutput', false);
Lmin = min([L{:}]);
  2 件のコメント
Adam Danz
Adam Danz 2019 年 5 月 13 日
The first input to cellfun() is a function handle. The second input is a cell array. The cellfun() function applies the function in input #1 to each element of the cell array in input #2. For example, the cell array T (defined below) has 4 elements. The length of the four elements are [3, 4, 5, 2].
T = { [1 2 3], [1 2 3 4], [1 2 3 4 5], [1 2] };
The 'UniformOutput' flag specifies that the output should be stored in a cell array.

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Kevin Phung
Kevin Phung 2019 年 5 月 9 日

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