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cwad  

Connectivity-Weighted Allocation and Comparison of Field-Plot Designs
View on CRAN: Click here


Download and install cwad package within the R console
Install from CRAN:
install.packages("cwad")

Install from Github:
library("remotes")
install_github("cran/cwad")

Install by package version:
library("remotes")
install_version("cwad", "0.2.0")



Attach the package and use:
library("cwad")
Maintained by
Praveen Kumar
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2026-09-26
Latest Update: 2026-09-26
Description:
A reproducible mixed-model toolkit for plant-breeding trial design. It evaluates any replication allocation under a known genetic relationship (kinship) matrix using one common linear-mixed-model engine on genotype means. Crucially, allocation and analysis model are crossed rather than confounded: every allocation can be scored both with and without kinship, so the precision gain attributable to a design can be separated from the gain attributable to the kinship-based analysis adopted alongside it. It computes A-optimal, connectivity-aware allocations via rank-1 Sherman-Morrison updates, and provides Monte-Carlo stress tests for outlier shrinkage and for an incorrectly specified kinship matrix, each with a matched control arm.
How to cite:
Praveen Kumar (2026). cwad: Connectivity-Weighted Allocation and Comparison of Field-Plot Designs. R package version 0.2.0, https://cran.r-project.org/web/packages/cwad. Accessed 25 Oct. 2026.
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