| lambda_diff {cofad} | R Documentation |
Calculate lambdas for two competing hypotheses
Description
If you want to test two competing hypotheses, you can use this helper function to create the correct difference lambdas. There is no magic here. The two contrasts are z-standardized first and then subtracted (lambda_preferred - lambda_competing). You can use the new difference lambdas as the input for calc_contrast.
Usage
lambda_diff(lambda_preferred, lambda_competing, labels = NULL)
Arguments
lambda_preferred |
Lambdas of the preferred hypothesis. Has to be a named vector with the names corresponding with the groups in the analyzed data set. Alternatively, use the parameter labels. |
lambda_competing |
Lambdas of the competing hypothesis. Has to be a named vector with the names corresponding with the groups in the analyzed data set. Alternatively, use the parameter labels. |
labels |
If you provide lambdas without names, you can set the group labels for both contrasts here. |
Value
Lambdas for difference between lambda_preferred and lambda_competing
Examples
lambda <- lambda_diff(c("A" = 1, "B" = 2, "C" = 3),
c("A" = 1, "B" = 2, "C" = 6))
lambda
# same result
lambda2 <- lambda_diff(c(1, 2, 3), c(1, 2, 6),
labels = c("A", "B", "C"))
lambda2