CalculatePercentage

Calculates the percentage of cells in ON (scale > 0) and OFF (scale < 0) activation states within each group defined by group_var.

Usage

CalculatePercentage(to.plot, group_var)

Arguments

to.plot

A data frame from PreparePlotData(), containing at least a scale column and the grouping column specified by group_var.

group_var

A character string specifying the grouping column in to.plot (e.g. "genotype", "treatment").

Value

A data frame with columns:

group

Group label.

percentage_on

Percentage of cells with scale > 0.

percentage_off

Percentage of cells with scale < 0.

cohens_d

(2-group only) Cohen's d effect size. Repeated for both group rows as it is a single pairwise estimate.

p_value

(2-group only) Wilcoxon rank-sum p-value.

kruskal_p

(3+ groups only) Kruskal-Wallis p-value.

For 3+ groups, Bonferroni-corrected pairwise Wilcoxon p-values are attached via attr(result, "pairwise_wilcox").

Details

If exactly two groups are provided, Cohen's d effect size and a Wilcoxon rank-sum p-value are computed between the two groups.

If more than two groups are provided, a Kruskal-Wallis p-value is computed across all groups, and pairwise Wilcoxon p-values (Bonferroni-corrected) are attached as an attribute.

Examples

if (FALSE) { # \dontrun{
data(fake_to_plot)
CalculatePercentage(fake_to_plot, "genotype")
} # }