Dear all,
I need to represent the 2D rotation matrix 'R'
R = |cos(t) -sin(t)|
|sin(t) cos(t)|
and compute it for different values of the rotation angle 't'. I am aware
the matrix of function can be represented as a gerund, which I like:
R =: 2 2$cos`(-@sin)`sin`cos .
To compute R(t), I wrote the following definition:
mf =: conjunction : '($x)$,(,x)/.((+/$x)$y)'
so that "R mf pi%4" returns R(pi/4). But I find the code for 'mf' not very
elegant. Is there a better way to achieve this?
Thanks in advance for any hint,
Francesco
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