MATLAB Answers


Add missing rows to the table without loop

Asked by Zeynab Mousavikhamene on 29 Oct 2019
Latest activity Answered by Akira Agata
on 30 Oct 2019
Attached is the table that I need to add missing rows to it. As you can see there is radius 25 and 33. I need to add radii from 0 to 35 and for radii other than 25 and 33 I want all columns (except radius) to be zero. I need it to be general because 25 adn 33 are not fixed and for the next batch other radii might be nonzero. I need to check radii from 0 to 35 and if they are not existing in the table, add radius to this table and make the zero columns for the rest.
Here is what I have now:
and I need to be like this:


I seen an entry at 34 but not at 33 ??
@Walter Roberson sorry I meant row 33. I made the second table in excel and content of row 34 should be at row 33.

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1 Answer

Answer by Akira Agata
on 30 Oct 2019
 Accepted Answer

Like this?
% Original table
Tbefore = array2table([0 25 12 12 0.08; 0 33 1 1 0.0051],...
% Create output table (all element = 0)
maxRadius = 35;
Tafter = array2table(zeros(maxRadius+1,5),...
Tafter.radius = (0:maxRadius)';
% Find corresponding rows in Tafter for each Tbefore's row
[~,loc] = ismember(Tbefore.radius, Tafter.radius);
% Allocate each Tbefore's row to appropriate position in Tafter
Tafter(loc,:) = Tbefore;


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