[PD] iemmatrix - "rotate" matrix

[João Pais]

Hello,

I'm programming a gui for [mtx_mul~], and it's almost finished. One thing  
is missing, and I wanted to know if someone already has a solution for it,  
before I break my head trying to find one.

I need to find a way to "rotate" matrixes, in order to coordenate the  
controler display, and matrix's format. Following the logic of max's  
matrixctrl object, and an usual DAW's display of audio matrixes, the lines  
are the inputs, and the columns are the outputs. But, Pd's [matrix]  
practise is the opposite.
So I'm trying to implement the "standard industry" display, and output  
Pd's [matrix] format.

For example, a 4x2 matrix to control [mtx_mul~] has 8 fields, and will be  
like

1 2
3 4
5 6
7 8

or

[matrix 4 2 1 2 3 4 5 6 7 8(

that is, columns are inputs, lines are outputs.

But, the current GUI would have the matrix "rotated", in the order

1 2 3 4
5 6 7 8

[matrix 4 2 1 5 2 6 3 7 4 8(

where columns are outputs, and lines are inputs.

So repeating to try to make it clear: the gui sends the data in the lower  
format, and it has to be "rotated" to match the format above. Is there an  
object or technique that does this?

Thanks again,

João