Last modified: Wed, 07/12/2017 - 12:36
DOT(VAR1,VAR2,IDIM) Compute the inner product of two variables along given dimension.
| Arguments: | VAR1 | Variable 1 |
| VAR2 | Variable 2 | |
| IDIM |
Index 1, 2, ... or 6 along which to compute the dot product |
|
| Result Axes: | X |
inherited from argument(s) |
| Y | inherited from argument(s) | |
| Z | inherited from argument(s) | |
| T | inherited from argument(s) | |
| E | inherited from argument(s) | |
| F | inherited from argument(s) |
This function is a "direction-changing function", whose result grid is determined by the value of a specific direction argument. The variables in arguments 1 and 2 must have axes of the same length in the dot-product directions.
Examples: Sketching the function call,
! For 1-D variables in x, compute the inner product along the common x axis ! The result is a scalar yes? let product = DOT(Ax, Bx, 1) ! For 2-D variables that share z and t axes, compute the inner product along the common z axis ! The result has a grid in xt yes? let product = DOT(Axzt, Bzt, 3)