Matrix indexing multiple rows

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Vincent Ivy
Vincent Ivy 2016-11-30
回答： pinank tilavat 2020-4-12
How can I select specific rows of a matrix. For example if I have a matrix with 10 rows and 3 columns. I want rows 2-4 and rows 5-8.
My matrix is actually has 1000 rows and 6 columns but if it can be done for a small matrix, then I can do it for a larger one.

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James Tursa
James Tursa 2016-11-30
编辑：James Tursa 2016-11-30
x = your matrix
result = x([2:4,5:8],:); % <-- pick off rows 2-4 and 5-8
Of course, the 2:4 and 5:8 could have been combined to just 2:8 for this example, but I assume you may have variables for the row numbers in your real problem.
pinank tilavat
pinank tilavat 2020-4-12
x= matrix
q= [x(2:4,:) ; x(5:8,:)]

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