testdata {chopsticks} | R Documentation |
This dataset comprises several data frames from a fictional (and unrealistically small) study. The dataset started off as real data from a screen of non-synonymous SNPs for association with type 1 diabetes, but the original identifiers have been removed and a random case/control status has been generated.
data(testdata)
There are five data objects in the dataset:
Autosomes
An object of class "snp.matrix"
containing
genotype calls for 400 subjects at 9445 autosomal SNPs
Xchromosome
An object of class "X.snp.matrix"
containing
genotype calls for 400 subjects at 155 SNPs on the X chromosome
Asnps
A dataframe containing information about the autosomal
SNPs. Here it contains only one variable, chromosome
,
indicating the chromosomes on which the SNPs are
located
Xsnps
A dataframe containing information about the X
chromosome
SNPs. Here it is empty and is only included for completeness
subject.data
A dataframe containing information about the
subjects from whom each row of SNP data was obtained. Here it
contains:
cc
Case-control status
sex
Sex
region
Geographical region of residence
The data were obtained from the diabetes and inflammation laboratory (see http://www-gene.cimr.cam.ac.uk/todd)
http://www-gene.cimr.cam.ac.uk/clayton
data(testdata) Autosomes Xchromosome summary(Asnps) summary(Xsnps) summary(subject.data) summary(summary(Autosomes)) summary(summary(Xchromosome))