From: Roy Stogner <roystgnr@ic...>  20090303 01:54:06

On Mon, 2 Mar 2009, John Peterson wrote: > On Mon, Mar 2, 2009 at 3:48 PM, yunfei zhu <yzhu2009@...> wrote: >> >> Considering a tri3, as following, >> >> 3 >> * >> * c * >> * * * >> * * >> * a* *b * >> 1 * * * * *2 >> points a,b,c are quadrature points. >> (L[i] are the area coordinates) >> p(0) is the area coordinate L[1] at a quadrature point. >> p(1) is the area coordinate L[2] at a quadrature point. John is right, and to be more specific, here is why: for our master triangle, 1 is at the origin, 2 is at (1,0), 3 is at (0,1). So p(0) = L(2) and p(1) = L(3)  Roy 