| Column Name | Data Type | Description |
|---|---|---|
| id_column | Any | Contains time series identifiers. |
| time_column | NUMERIC | Contains the time axis of the data. |
| value_column | NUMERIC | Contains signal values on which to perform FFT. The table has one to 16 such columns. A 2-dimensional signal of length n is represented in this column as a matrix of sqrt(n) rows and columns, stored in column-major order. (See Example 2: 2D Signal.) A 3-dimensional signal of length n is represented in this column as a matrix 2 matrixes of sqrt(n) rows and columns, stored in column-major order. (See Example 3: 3D Signal.) |