How can I choose a random row from a specific multidimensional array?

2 Ansichten (letzte 30 Tage)
Abdulatif Alabdulatif
Abdulatif Alabdulatif am 30 Apr. 2014
Kommentiert: Matt J am 30 Apr. 2014
Hi,
I have a multidimensional array X=(50,9), and I want to choose a random row of 50 exist rows in an array.
First row in this array is just scalar numbering from 1 up to 50, I do not know if this can help to pick a random row based on the first row value or not!
Thanks in advance!

Melden Sie sich an, um diese Frage zu beantworten.

Akzeptierte Antwort

Matt J
Matt J am 30 Apr. 2014
randomRow=X(randi(50),:);
  2 Kommentare
Abdulatif Alabdulatif
Abdulatif Alabdulatif am 30 Apr. 2014
That was so quick : )
Thanks a lot.
Is it possible to replace the length of the array rows (50) with flexible statement to specify the number of rows in any array?
I just ask to generalise the answer rather than specified a specific value
Thanks again : )
Matt J
Matt J am 30 Apr. 2014
Yes, see the size() command
[numRows,numCols]=size(X);

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (0)

Kategorien

Mehr zu Creating and Concatenating Matrices finden Sie in Help Center und File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by