| Parameter Name | Description | Default(inch) |
| xo | x coordinate | 0 |
| yo | y coordinate | 0 |
| zo | z coordinate | 0 |
| grid_w | width of canopy | 36 |
| grid_d | depth of canopy | 108 |
| beam_ver_w | width of vertical member | 0.5 |
| beam_ver_h | thickness of vertical member | 4 |
| beam_hor_d | depth of horizontal member | 0.5 |
| beam_hor_h | thickness of horizontal member | 4 |
| n_row | number of rows of horizontal member | 12 |
| n_col | number of columns of vertical member | 4 |
| wall_t | thickness of wall | 12 |
| angle_y | vertical dimension from top of canopy
members to bottom of canopy upper-part in 90 degree angle | 108 |