how to find an empty row in a table

88 vues (au cours des 30 derniers jours)
tiwwexx
tiwwexx le 21 Juin 2019
Commenté : Gabor le 4 Mar 2021
Hello, I'm trying to get rid of a certain row in a single column table that only has a []. for example if I have a table.
column 1
row1 | 'hey' |
row2 | 'hey' |
row3 | [ ] |
how can I get it to be
column 1
row1 | 'hey' |
row2 | 'hey' |
I have a code that works but for larger tables it's extreemely slow.
yee = "original table";
yee1=table;
for n=1:numel(yee)
if isa(yee{n},'char')
bus=yee(n);
yee1 = [yee1 ; bus];
end
end
I feel like there's a lot more efficient ways to do this. Thanks for any help!

Réponse acceptée

Matt J
Matt J le 21 Juin 2019
Modifié(e) : Matt J le 21 Juin 2019
loc=cellfun('isempty', yourTable{:,'column1'} );
yourTable(loc,:)=[]
  3 commentaires
Gabor
Gabor le 4 Mar 2021
Modifié(e) : Gabor le 4 Mar 2021
It is a table and a column contains numbers instead of strings and this is the error I get:
Error using cellfun
cellfun works only on cells.
Gabor
Gabor le 4 Mar 2021
For me it works if I convert the table to cell and I use the column number in the script:
yourTable2=table2cell(yourTable);
loc=cellfun('isempty', yourTable2{:,1} );
I hope it helps someone.

Connectez-vous pour commenter.

Plus de réponses (1)

Guillaume
Guillaume le 21 Juin 2019
Even simpler, and probably faster, use the table tools (rather than cell array tools):
yourtable = rmmissing(yourtable)
  1 commentaire
Matt J
Matt J le 21 Juin 2019
Modifié(e) : Matt J le 21 Juin 2019
Unfortunately, rmmising doesn't seem to recognize the empty matrix [] as a missing data marker, so the table would have to be reformatted.

Connectez-vous pour commenter.

Catégories

En savoir plus sur Matrices and Arrays dans Help Center et File Exchange

Produits


Version

R2019a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by