To map two scalar numeric values (x0,x1) to two other scalar values (y0,y1):
- Plot the graph (x0,y0) and (x1,y1). Find the y-intercept s and slope m. The mapping is s+m*x. Simplify for particular values of s and m. If y0/y1 is 0, or if y0/y1 is 1, or if x0/x1 is boolean, there are functions you can exploit, such as ^ or * . - ((x0,x1)i.x){(y0,y1). Simplify for specific domains. For example if x is known to be boolean you can simplify 0 1 i. x to just x . ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm