Example Datasets

torch_openreml.example_data.john_alpha

torch_openreml.example_data.john_alpha

Alpha lattice design of spring oats (re-exported from R agridat).

This dataset is a Python re-export of john.alpha from the R package agridat. It contains field trial data from a resolvable alpha lattice design conducted at Craibstone near Aberdeen.

The experiment includes 24 oat varieties evaluated across 3 replicates, with each replicate arranged into 6 incomplete blocks of size 4.

Shape: 72 rows × 7 columns

Example

from torch_openreml.example_data import john_alpha
print(john_alpha)

    plot rep block  gen   yield  row  col
0      1  R1    B1  G11  4.1172    1    1
1      2  R1    B1  G04  4.4461    2    1
2      3  R1    B1  G05  5.8757    3    1
3      4  R1    B1  G22  4.5784    4    1
4      5  R1    B2  G21  4.6540    5    1
..   ...  ..   ...  ...     ...  ...  ...
67    68  R3    B5  G24  3.5655   68    1
68    69  R3    B6  G03  2.8873   69    1
69    70  R3    B6  G05  4.1972   70    1
70    71  R3    B6  G20  3.7349   71    1
71    72  R3    B6  G07  3.6096   72    1

[72 rows x 7 columns]

Columns

Column	Type	Description
plot	int	Plot number.
rep	int	Replicate identifier (1–3).
block	int	Incomplete block within replicate.
gen	str	Genotype / variety identifier.
yield	float	Dry matter yield (tonnes/ha).
row	int	Field row coordinate (note: layout is linear, not grid-based).
col	int	Field column coordinate.

Design

Resolvable alpha lattice design with incomplete blocking structure.

Note

The tabular layout in John & Williams (1995, p. 146) does not represent the physical field layout (plots were arranged in a single line).

Source

Re-exported from R package agridat (john.alpha dataset).

References

10. 1. John & E. R. Williams (1995). Cyclic and computer generated designs. Chapman and Hall, London. Page 146.