## GSLIB Help Page: ELLIPSIM

Description:

- This program provides a very simple example of Boolean simulation: ellipsoids of various sizes and anisotropies are dropped at random until a target proportion of points within-ellipse is met. The ellipsoids are allowed to overlap each other.

Parameters:

- outfl: the simulated realizations are written to this file. The output file will contain the unconditional simulated indicator values (1 if in an ellipse, zero otherwise) cycling fastest on x then y, then z, and then simulation by simulation.
- nsim: the number of simulations to generate.
- nx, xsiz: definition of the grid system (x axis).
- ny, ysiz: definition of the grid system (y axis).
- nz, zsiz: definition of the grid system (y axis).
- seed: random number seed (a large odd integer).
- targprop: the target proportion of ellipse volume.
- For the different types of ellipsoids to be added: radiusx, radiusy, radiusz, angle1, angle2, angle3, and weight specify the ellipsoid size, orientation, and relative proportion (counting). A short description of the program