how to find an empty row in a table

106 visualizzazioni (ultimi 30 giorni)
tiwwexx
tiwwexx il 21 Giu 2019
Commentato: Gabor il 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!

Risposta accettata

Matt J
Matt J il 21 Giu 2019
Modificato: Matt J il 21 Giu 2019
loc=cellfun('isempty', yourTable{:,'column1'} );
yourTable(loc,:)=[]
  3 Commenti
Gabor
Gabor il 4 Mar 2021
Modificato: Gabor il 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 il 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.

Accedi per commentare.

Più risposte (1)

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

Accedi per commentare.

Prodotti


Release

R2019a

Community Treasure Hunt

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

Start Hunting!

Translated by