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Retrive horizontal matrix rows based on vector in Mathcad

MC_9370533
4-Participant

Retrive horizontal matrix rows based on vector in Mathcad

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).

MC_9370533_1-1653309709607.png

Is there a simple way to do this?

 

Thanks in advance for your help.

 

Miguel,

1 ACCEPTED SOLUTION

Accepted Solutions


@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).

MC_9370533_1-1653309709607.png

Is there a simple way to do this?,


Is this of any help, Miguel?

 

2022 05 23 a.png

 

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

View solution in original post

3 REPLIES 3


@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).

MC_9370533_1-1653309709607.png

Is there a simple way to do this?,


Is this of any help, Miguel?

 

2022 05 23 a.png

 

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

Hello Stuart,

 

Yes it works perfectly.

 

Great, thank you so much for your help.

 

Miguel,

 

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