sparta v0.8.4 (2022-04-11)

sparta v0.8.3.1 (2022-03-20)

Bug fixed when mult/div two unities
Bug fixed when calling div(x,y) with x being a scalar. The result was the same as div(y,x).
numerics can now be marginalized. The result is the numeric itself.

as_sparta.data.frame does no longer convert to an array first (expensive) and is therfore much more efficient now.

marg is now more efficient when y is character(0)
A sparta_unity_struct can now be sliced if drop TRUE=.
Better argument checks in slice
mult and div is now faster when one of the tables is a subtale of the other. This is especially useful in connection with Bayesian networks and the Junction Tree Algorithm.
sum, normalize, get_vals and vals now works as expected on sparta_unity class
New functions: sparta_rank and table_size
as_array now works for sparta_unity

Bug fixed when argument drop is TRUE in slice for tables that should reduce to one row.

The new print method turned out to cause problems in the long run. Printing a sparse table now prints columns as rows again with the corresponding value attached to the right.
marginalizing is much more memory efficient now. Especially for massive tables.

Multiplication of unity tables was not correct due to the new rank argument. The fix was to multiply the rank of the tables.
Print method changed to print cells as columns which is also how the sparse tables are represented under the hood.
New functions (see documentation):
- sparsity: determines the ratio of non-zero cells and the size of the statespace.
- as_df: convert a sparse table to a data.frame. Either with or without zero cells
- get_values: The same as the existing vals

unity tables now have a rank attribute which is just the unique value that all cells have. Because of this, a unity table can now be multiplied with a scalar. And regular sparta tables can be multiplied with unities of different rank. As a consequence, unities can now be marginalized also.
New function equiv to test if two sparta objects are identical
Fixed a bug when assigning dimnames to the result of multiplication

Prevent print from printing dimension names
A bug, due to wrong sorting, that manifested in both marg, slice, mult and div has been fixed. These functions were prone to errors when the number of variables exceed 10.
It is now possible to multiply and divide sparta tables with a scalar where the scalar can be either of the two inputs. Prior to v0.6.0 the scalar had to be the second argument.