init_traces allocates n-1 (where n is the dimensionality of the sep_type) trace array and sets the rdata, cdata, or idata to the corresponding member of the zero_tr (see Figure 2). This is one of the most powerful features of our formulation, the regularity of a grid, and the corresponding simplicity of accessing, is preserved, while:
| Name | Format | Description |
| sepdata | sep_type | The name of the dataset. |