This plug-in provides a means to generate new well logs from equations. Up to three variables are allowed, but more variables can be added by separating the equations. This plug-in provides a great potential for the oil industry specialists who can apply their more complex equations to generate new logs.
The following equations are examples of the syntax used to write the equations:

• z – 10*exp(-.1*(x^2 + y^2))*cos(x*y)

• x^2 + y^2 – z^2

• z – cos(x) * sin(y)

• z – cos(x*y)

• (x^2+1)*y + cos(2.2*z)-1

• (x^2 + y^2 – 0.25) * (- x^2 – y^2 – z^2 + 1) – 0.1

• ((x-1.5)^2 + (y-0.0)^2 + z^2 – 0.4)*((x-.5)^2 + y^2 + z^2 – 0.2) – 0.003

• z – 10*sin(sqrt(x^2 + y^2)) / sqrt(x^2 + y^2)

• (x<40)&(y<100)

In the upper figure two new well logs are generated from equations F1 = xn^2 + yn^2, F2 = x^2 + y^2.