How to remove rows of empty strings?

53 vues (au cours des 30 derniers jours)
Calvin Ewanchuk
Calvin Ewanchuk le 30 Oct 2019
Modifié(e) : the cyclist le 30 Oct 2019
I have a string array which I have preallocated as follows:
BusName = strings(MaxB,NumBVF,1);
After reading in the data, my string array has many empty rows at the end.
So my question is: How do I remove all rows that consist entirely of blank strings ("")?
Here is what I've come up with so far:
BusName(strcmp(BusName(:,2),""),:) = [];
Unfortunately, it is removing rows that it shouldn't be (rows that have "" but also data).
Any suggestions (and explanation) will be greatly appreciated!
  3 commentaires
Calvin Ewanchuk
Calvin Ewanchuk le 30 Oct 2019
Never uploaded a file here before, but here goes
the cyclist
the cyclist le 30 Oct 2019
Modifié(e) : the cyclist le 30 Oct 2019
Your upload worked! (And my solution works on your input.)

Connectez-vous pour commenter.

Réponses (2)

the cyclist
the cyclist le 30 Oct 2019
Modifié(e) : the cyclist le 30 Oct 2019
I'm having trouble following the logic in the command you posted, because you seem to be checking only the second column of Busname.
But I'm pretty sure you'll want to use the all command to get the rows where all the elements are blank.
I think it would be something like
BusName(all(strcmp(BusName,""),2),:) = [];
  1 commentaire
Calvin Ewanchuk
Calvin Ewanchuk le 30 Oct 2019
Modifié(e) : Calvin Ewanchuk le 30 Oct 2019
Sorry, I'm kinda new to MATLAB. I'll try your code.
Yes, I want to delete the rows where all the strings are blank (""). I just can't figure out the syntax.

Connectez-vous pour commenter.


Walter Roberson
Walter Roberson le 30 Oct 2019
Modifié(e) : the cyclist le 30 Oct 2019
BusName = rmmissing(BusName, 'MinNumMissing', size(BusName,2));
  2 commentaires
Calvin Ewanchuk
Calvin Ewanchuk le 30 Oct 2019
I don't think this will work since the data is blank ("') but not <missing>.
the cyclist
the cyclist le 30 Oct 2019
Yeah, does not work on your string array.
(Walter, my edit of your answer was just to fix up 'MinMissing' to 'MinNumMissing').

Connectez-vous pour commenter.

Catégories

En savoir plus sur Matrix Indexing dans Help Center et File Exchange

Produits

Community Treasure Hunt

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

Start Hunting!

Translated by