cartesian-matrix-map ( matrix quot: ( ... pair matrix -- ... matrix' ) -- matrix-seq )

Vocabulary

math.matrices.extras

Inputs

matrix	a matrix
quot	a quotation with stack effect ( ... pair matrix -- ... matrix' )

Outputs

matrix-seq

a sequence of matrixs

Word description

Calls the quotation with the matrix and the coordinate pair of the current element on the stack, with the matrix on the top of the stack.

Examples

USING: arrays math.matrices.extras prettyprint ; { { 21 22 } { 23 24 } } [ 2array ] cartesian-matrix-map .
{ { { { 0 0 } { { 21 22 } { 23 24 } } } { { 0 1 } { { 21 22 } { 23 24 } } } } { { { 1 0 } { { 21 22 } { 23 24 } } } { { 1 1 } { { 21 22 } { 23 24 } } } } }

Notes

•	This word is the orthogonal variant of cartesian-column-map.
•	This word is the two-dimensional variant of map-index.
•	This word is intended for use with "flat" (2-dimensional) matrices.

Definition

USING: kernel math.matrices sequences ;

IN: math.matrices.extras

: cartesian-matrix-map
    ( matrix quot: ( ... pair matrix -- ... matrix' ) -- matrix-seq )
    [ [ first length <cartesian-square-indices> ] keep ] dip
    curry matrix-map ; inline