Generate matrix with a pattern

Hello guys,

I need your help please. If I want to generate matrix given the rows and columns Cx(NXC) like this

where here, C = 3, N = 4.

The first row consists of three elements which is C then it repeats itself for 4 times which is N. The second row starts with 0 then the same pattern. It looks like diagonal matrices.

The most important thing is to be changeable according to any value of C and N but with the same pattern. Always N >C

Many thanks for your help!

Answer 1

[KSSV]

I = eye(3) ; 
iwant = repmat(I,1,4)

iwant = 3×12

1 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1

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[Michael Henry]

Thank you so much my friend KSSV. Can I ask you for one last favor please, how I can generate another matrix like this (4X12)

Where here the 3 ones are in first row then all zeros. The second row starts with 3 zeros then three ones then zeros to the end. This repates for all rows. But I need to generate such pattern for any number of rows and columns. For example, for (4X8), it should look like

Many thanks for your time!