Plot expression distributions as ridgelines — get_expression

Shows per-group (or per-sample) expression distributions pooled across the selected genes using ridge (joy) plots. Genes are pooled; no faceting to keep shapes comparable.

Usage

get_expression_joyplot(
  x,
  genes = NULL,
  sample_group = NULL,
  group_column = NULL,
  log_transform = TRUE,
  alpha = 0.7,
  scale = 1.2,
  y_by = c("group", "sample"),
  color_by = c("group", "sample")
)

Arguments

x: A VISTA object.
genes: Optional character vector of genes to display. Defaults to all genes.
sample_group: Optional character vector specifying which groups (as defined by group_column) to include.
group_column: Optional column name in sample_info used as the grouping variable.
log_transform: Logical; apply log2(x + 1) transform before plotting.
alpha: Numeric transparency for fills.
scale: Numeric scaling factor for ridges (passed to geom_density_ridges()).
y_by: Either "group" (default) or "sample" to choose the y-axis (ridge) grouping.
color_by: Either "group" (default) or "sample" to choose fill colors.

Value

A ggplot2 object.