FF = operf(OP,F1,F2) performs operation specified by OP on the fields
F1 and F2. Valid operations are '+', '-', '.*' and './'. F1 and F2 must
be of the same type (vector or scalar fields).
FF = operf(OP,F,N), where N is a number, performs operation specified
by OP on the field F. Valid operations are '+', '-', '*', '/' and '.^'.
FF = operf(OP,F) performs unary operation specified by OP on F. OP may
be '+' (does nothing), '-' (inverts the field), or any MODE operation
from vec2scal (eg, operf('rot',V) is equivalent to vec2scal(V,'rot')).
operf(..) without output argument shows the result with showvec or
showscal.
Examples:
v=loadset;
showvec(operf('-',v));
showscal(operf('/',vec2scal(v,'rot'),2));
F. Moisy
Revision: 1.0, Date: 2005/10/29.
See Also
vec2scal, showvec, showscal, averf, spaverf, subaverf.