How to add a NaN row at the beginning columns of a table?
5 views (last 30 days)
Show older comments
I have a code that looks like this:
A(:,1)=[NaN;B(1:end-1)];
A(T.id(1:end)~=[NaN;T.id(1:end-1)],1)=NaN;
A(:,2)=[NaN;NaN;B(1:end-2)];
A(T.id(1:end)~=[NaN;NaN;T.id(1:end-2)],2)=NaN;
A(:,3)=[NaN;NaN;NaN;B(1:end-3)];
A(T.id(1:end)~=[NaN;NaN;NaN;T.id(1:end-3)],3)=NaN;
A(:,4)=[NaN;NaN;NaN;NaN;B(1:end-4)];
A(T.id(1:end)~=[NaN;NaN;NaN;NaN;T.id(1:end-4)],4)=NaN;
A(:,5)=[NaN;NaN;NaN;NaN;NaN;B(1:end-5)];
A(T.id(1:end)~=[NaN;NaN;NaN;NaN;NaN;T.id(1:end-5)],5)=NaN;
I want to turn this into a more compact code by adding NaNs to each row sequentially in a loop at each step but I couldn't come up with a code that can do that
0 Comments
Accepted Answer
Daniel Pollard
on 15 Jan 2021
for jj = 1:5
A(:,jj) = [NaN([jj 1]); B(1:end-jj)]
A(T.id(1:end) ~= [NaN([jj 1]); T.id(1:end-jj)], jj) = NaN;
end
I haven't tested it but something like this is what you're after?
More Answers (0)
See Also
Categories
Find more on Matrices and Arrays in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!