obs_var
- pyoptex.doe.fixed_structure.splitk_plot.utils.obs_var(plot_sizes, ratios=None)[source]
Directly computes the observation matrix from the design. Is similar to
obs_var_Zsfollowed byobs_var_from_Zs.Parameters
- plot_sizesnp.array(1d)
The sizes of each plot. e.g. [3, 4] is a split-plot design with 4 plots and 3 runs per plot.
- ratiosnp.array(1d)
The variance ratios of the different groups compared to the variance of the random errors.
Returns
- Vnp.array(2d)
The observation covariance matrix.