| compute_moving_avg | Compute 3x3 moving averages |
| ferti_analysis | Fertility Classes heatmap with 3 * 3 moving average values - |
| fit_variance_law | Fit Fairfield-Smith's variance law to matrix data with ggplot2 plots |
| generate_plot_shapes | Generate valid plot sizes and shapes |
| get_Tvals | Compute T values (sum of block totals) for a given h x w plot |
| make_horizontal | Make a horizontal vector from a matrix |
| make_vertical | Make a vertical vector from a matrix |
| population_variance | Compute population variance for given h x w plot |
| serial_corr | Compute first-order serial correlation of a vector |
| serial_corrl | computes the first-order serial correlation for both directions. |