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Use of ":"operator in matlab?

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ABTJ
ABTJ 2020-6-21
编辑： Stephen23 2020-6-23
Let say i have a matrix; x=[2 3;4 5] % 2 rows 2 columns
then i enter command , x(:)=[2;3;4;5] % 4 rows 1 column
What is happening here?
Is there any possiblity that i get 1 row 4 columns?If yes,how?

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madhan ravi
madhan ravi 2020-6-21
(:) forces the matrix to a column vector, all you need is
reshape(matrix, 1, [])
  2 个评论
Stephen23
Stephen23 2020-6-23
编辑：Stephen23 2020-6-23
"(:) forces the matrix to a column vector"
Only when used in an expression or the RHS of an assignment. On the LHS it simply refers to all elements of the array (in linear index order) and does not change the size or shape of the LHS array at all. See:
https://blogs.mathworks.com/loren/2006/08/09/essence-of-indexing/
madhan ravi
madhan ravi 2020-6-23
编辑：madhan ravi 2020-6-23
“Only when used on the RHS of an assignment”
Exactly what the OP was asking and I was referring too. Was expecting your comment a bit earlier though ;). But thank you for explaining the details.

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