The table summarizes the time series functions available in APL.
| Function | Description |
|---|---|
| series_abs | Returns the absolute value of a series. |
| series_acos | Returns the inverse cosine (arccos) of a series. |
| series_add | Performs element-wise addition between two series. |
| series_asin | Returns the inverse sine (arcsin) of a series. |
| series_atan | Returns the inverse tangent (arctan) of a series. |
| series_ceiling | Rounds each element up to the nearest integer. |
| series_cos | Returns the cosine of a series. |
| series_cosine_similarity | Calculates the cosine similarity between two series. |
| series_divide | Performs element-wise division between two series. |
| series_dot_product | Calculates the dot product between two series. |
| series_equals | Compares each element in a series to a specified value and returns a boolean array. |
| series_exp | Calculates the exponential (e^x) of each element in a series. |
| series_fft | Performs a Fast Fourier Transform on a series, converting time-domain data into frequency-domain representation. |
| series_fill_backward | Fills missing values by propagating the last known value backward through the array. |
| series_fill_const | Fills missing values with a specified constant value. |
| series_fill_forward | Fills missing values by propagating the first known value forward through the array. |
| series_fill_linear | Fills missing values using linear interpolation between known values. |
| series_fir | Applies a Finite Impulse Response filter to a series using a specified filter kernel. |
| series_floor | Rounds down each element in a series to the nearest integer. |
| series_greater | Returns the elements of a series that are greater than a specified value. |
| series_greater_equals | Returns the elements of a series that are greater than or equal to a specified value. |
| series_ifft | Performs an Inverse Fast Fourier Transform on a series, converting frequency-domain data back into time-domain representation. |
| series_iir | Applies an Infinite Impulse Response filter to a series. |
| series_less | Returns the elements of a series that are less than a specified value. |
| series_less_equals | Returns the elements of a series that are less than or equal to a specified value. |
| series_log | Returns the natural logarithm of each element in a series. |
| series_magnitude | Calculates the Euclidean norm (magnitude) of a series. |
| series_max | Returns the maximum value from a series. |
| series_min | Returns the minimum value from a series. |
| series_multiply | Performs element-wise multiplication of two series. |
| series_not_equals | Returns the elements of a series that aren’t equal to a specified value. |
| series_pearson_correlation | Calculates the Pearson correlation coefficient between two series. |
| series_pow | Raises each element in a series to a specified power. |
| series_sign | Returns the sign of each element in a series. |
| series_sin | Returns the sine of a series. |
| series_stats | Computes comprehensive statistical measures for a series. |
| series_stats_dynamic | Computes statistical measures and returns them in a dynamic object format. |
| series_subtract | Performs element-wise subtraction between two series. |
| series_sum | Returns the sum of a series. |
| series_tan | Returns the tangent of a series. |