add a row or column to an existing matrix

add a row or column to an existing matrix - modify existing matrix - Mensajes

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#1 Publicado: 1/6/2017 11:59:50

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Hi,
Is there a quicker way than creating a new larger matrix (I've seen a discussion 3 years ago on adding a row to a matrix)?
Is there an alternative means of creating a look-up table of values?
Regards, Tim

#2 Publicado: 1/6/2017 12:22:06

Davide Carpi

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Hello Tim,

there are stack() and augment() functions, as well as direct assignment of an element outside the boundaries, that automatically increase the matrix size to include the new element

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#3 Publicado: 1/6/2017 12:58:17

Jean Giraud

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You have two requests in one question !!!
Modify and lookup ...
Insert col/row ... page 13, then modify at will
lookup also included

Jean

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#4 Publicado: 1/6/2017 13:03:46

timgow

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Thank you Davide, thank you Jean.
Your help is much appreciated, I'm rolling now, a fabulous program and forum.
Tim

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add a row or column to an existing matrix - modify existing matrix - Mensajes