iplotPXG: Interactive phenotype x genotype plot

In qtlcharts: Interactive Graphics for QTL Experiments

Interactive phenotype x genotype plot

Description

Creates an interactive graph of phenotypes vs genotypes at a marker.

Usage

iplotPXG(
  cross,
  marker,
  pheno.col = 1,
  horizontal = FALSE,
  chartOpts = NULL,
  fillgenoArgs = NULL,
  digits = 5
)

Arguments

cross	Object of class "cross", see qtl::read.cross().
marker	Character string with marker name.
pheno.col	Phenotype column in cross object.
horizontal	If TRUE, switch role of x- and y-axes and put genotype on y-axis.
chartOpts	A list of options for configuring the chart. Each element must be named using the corresponding option.
fillgenoArgs	List of named arguments to pass to qtl::fill.geno(), if needed.
digits	Round data to this number of significant digits before passing to the chart function. (Use NULL to not round.)

Details

The function qtl::fill.geno() is used to impute missing genotypes, with arguments passed as a list, for example fillgenoArgs=list(method="argmax", error.prob=0.002, map.function="c-f").

Individual IDs (viewable when hovering over a point) are taken from the input cross object, using the qtl::getid() function in R/qtl.

By default, points are colored blue and pink according to whether the marker genotype is observed or inferred, respectively.

Value

An object of class htmlwidget that will intelligently print itself into HTML in a variety of contexts including the R console, within R Markdown documents, and within Shiny output bindings.

See Also

idotplot(), iplot(), iplotScanone(), iplotMap()

Examples

library(qtl)
data(hyper)
marker <- sample(markernames(hyper), 1)

iplotPXG(hyper, marker)

# different colors
iplotPXG(hyper, marker, chartOpts=list(pointcolor=c("black", "gray")))

qtlcharts documentation built on June 19, 2026, 5:07 p.m.