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qtl (version 0.97-21)

Tools for analyzing QTL experiments

Description

Analysis of experimental crosses to identify genes (called quantitative trait loci, QTLs) contributing to variation in quantitative traits.

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Version

Install

install.packages('qtl')

Monthly Downloads

2,669

Version

0.97-21

License

GPL version 2 or later

Maintainer

Karl W Broman Saunak Sen ssenjaxorg

Last Published

August 22nd, 2024

Functions in qtl (0.97-21)

argmax.geno

Reconstruct underlying genotypes
calc.errorlod

Identify likely genotyping errors
comparecrosses

Compare two cross objects.
plot.map

Plot genetic map
c.cross

Combine data for QTL experiments
plot.info

Plot the proportion of missing genotype information
plot.scantwo

Plot LOD scores for a two-dimensional genome scan
plot.missing

Plot grid of missing genotypes
lodint

LOD support interval
plot.cross

Plot various features of a cross object
top.errorlod

List genotypes with large error LOD scores
plot.pxg

Plot phenotypes versus marker genotypes.
geno.table

Create table of genotype distributions
plot.geno

Plot observed genotypes, flagging likely errors
drop.markers

Drop a set of markers
summary.ripple

Print summary of ripple results
scanqtl

General QTL scan
summary.cross

Print summary of QTL experiment
replace.map

Replace the genetic map of a cross
scantwo

Two-dimensional genome scan with a two-QTL model
fill.geno

Fill holes in genotype data
summary.scanone

Summarize the results of a genome scan
convert2ss

Convert an intercross into a form to allow sex-specific maps
find.marker

Find marker closest to a specified position
plot.errorlod

Plot grid of error LOD values
max.scantwo

Maximum peak in two-dimensional genome scan
plot.scanone

Plot LOD curves
pull.geno

Pull out the genotype data from a cross
scanone

Genome scan with a single QTL model
clean

Remove derived data
summary.fitqtl

Summary of fit of qtl model
est.rf

Estimate pairwise recombination fractions
summary.scantwo

Summarize the results of a two-dimensional genome scan
switch.order

Switch the order of markers on a chromosome
effectscan

Plot allelic effect across the whole genome
qtl-internal

Internal qtl functions
pull.map

Pull out the genetic map from a cross
nmissing

Number of missing genotypes
subset.cross

Subsetting data for QTL experiment
max.scanone

Maximum peak in genome scan
sim.map

Simulate a genetic map
plot.rf

Plot recombination fractions
A starting point

Introductory comments
write.cross

Write data for a QTL experiment to a file
sim.geno

Simulate genotypes given observed marker data
ripple

Compare marker orders
est.map

Estimate genetic maps
fitqtl

Fit a multiple QTL model
read.cross

Read data for a QTL experiment
sim.cross

Simulate a QTL experiment
drop.nullmarkers

Drop markers without any genotype data
calc.genoprob

Calculate conditional genotype probabilities
makeqtl

Make a qtl object
effectplot

Plot phenotype means against genotypes at one or two markers.
bristle3

Data on bristle number in Drosophila
map10

An example genetic map
fake.f2

Simulated data for an F2 intercross
bristleX

Data on bristle number in Drosophila
fake.bc

Simulated data for a backcross
listeria

Data on Listeria monocytogenes susceptibility
hyper

Data on hypertension
badorder

An intercross with misplaced markers
fake.4way

Simulated data for a 4-way cross