How to access number of rows in one step?

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wit221
wit221 2016-12-9
评论： wit221 2016-12-9
I have a matrix:
theMatrix = [2 3 4;5 3 2];
I can access the number of rows in the following two steps:
matrixSize = size(theMatrix);
rows = matrixSize(1);
Why can I not access it using the following?
rows = size(theMatrix)(1)
or
rows = (size(theMatrix))(1)
?
In my understanding size(theMatrix) returns a 1x2 vector, so that expression is: (1x2 vector)(1), which means return 1st value of vector. That is why I am confused.
[rows columns] = size(myMatrix); creates a redundant variable column. I do not want to know the number of columns - just the number of rows.

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Mischa Kim
Mischa Kim 2016-12-9
Try
size(theMatrix,1)
  1 个评论
wit221
wit221 2016-12-9
Thank you. Next time I will remember to verify the function documentation using help [function]!

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