extracting specific rows from a matrix

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Don Brohaugh 2015-4-23

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评论： Don Brohaugh 2015-4-23

采纳的回答： Guillaume

If I have a 1080 x 4 matrix Y, arranged as:

value1 int int int

value2 int int int

value3 int int int

and so on for 1080 rows,

how do I extract all rows in the matrix with the integer in column 3, whose value is, say 11, and create a new 6 x 4 matrix Z of the six entries in Y with the integer 11 present in column 3?

Thank you,

Don

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Guillaume 2015-4-23

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编辑：Guillaume 2015-4-23

在 MATLAB Online 中打开

This is basic matrix indexing:

Z = Y(Y(:, 3) == 11, :);

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Don Brohaugh 2015-4-23

Thank you!

Don

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MATLAB Language Fundamentals Matrices and Arrays Matrix Indexing

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