Retrive horizontal matrix rows based on vector in Mathcad

[MC_9370533]

Hello everyone,

I would like to retrieve certain rows of a matrix based on an initial vector:

Lets say I have the vector Lp and and I want to search the rows in the matrix M (based on the first column) in order to achieve the matrix Final.

Note that the vector Lp can have more numbers as for the Matrix M (this is just an example).

Is there a simple way to do this?

Thanks in advance for your help.

Miguel,

[StuartBruff · Accepted solution]

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@MC_9370533 wrote:

Hello everyone,

I would like to retrieve certain rows of a matrix based on an initial vector:

Lets say I have the vector Lp and and I want to search the rows in the matrix M (based on the first column) in order to achieve the matrix Final.

Note that the vector Lp can have more numbers as for the Matrix M (this is just an example).

Is there a simple way to do this?,

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Is this of any help, Miguel?

Prime 7 worksheet attached.   (You can safely ignore everything else that is in the collapsed Areas, I was just using this worksheet as a scratchpad for some other questions)

Stuart

[MC_9370533]

Hello Stuart,

Yes it works perfectly.

Great, thank you so much for your help.

Miguel,

[DB_10327335]

check this out : http://support.ptc.com/help/mathcad/en/index.html#page/Tutorials/task4-3_extracting_data_from_matrices.html