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for loop help with loop range

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Nina Perf
Nina Perf 2021년 8월 2일
편집: Nina Perf 2021년 8월 3일
I nedd help with the following:
Thank you!
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dpb 2021년 8월 2일
How do you intend to hold the disparate output size of either three (3) or two (2) return values?
This seems exceedingly awkward construct; I'd suggest instead an array of Nx3 with a missing value for those without a z coordinate.
Otherwise, how are these to be used later on -- should they not be the same variable because they are three disparate quantities, not one (or maybe there are two)?

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dpb 2021년 8월 2일
" extract data of the first 3 columns (x,y,z) for sensorIdx 1,2,5,6,7. For sensorIdx 3 and 4 I want to extract columns 5,6 (x,y) and 7,8 (x,y) respectively."
id_xyz=[1 2 5:7];
ch_xy=[5 6;7 9];
id_xy=[3; 4];
xy=cell2mat(@(i) data(id_xz(i),ch_xy(i,:),1:numel(id_xy),'uni',0).');

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