="codeinput">
bowl = makeBowl(grid_size, bowl_pos, radius, diameter, focus_pos)
bowl = makeBowl(grid_size, bowl_pos, radius, diameter, focus_pos, ...)
</pre>

<h2>Description</h2>

<p><code>makeBowl</code> creates a binary map of a bowl from a symmetric spherical shell within a three-dimensional grid. The bowl position is denoted by 1's in the matrix with 0's elsewhere. The bowl surface within the Cartesian grid is found using a bi-directional line search along each row and column to find the grid point wit