useMart | R Documentation |
A first step in using the biomaRt package is to select a BioMart database and dataset to use. The useMart function enables one to connect to a specified BioMart database and dataset within this database. To know which BioMart databases are available see the listMarts function. To know which datasets are available within a BioMart database, first select the BioMart database using useMart and then use the listDatasets function on the selected BioMart, see listDatasets function.
useMart(biomart, dataset, host="https://www.ensembl.org",
path="/biomart/martservice", port, archive=FALSE, version, verbose = FALSE)
biomart |
BioMart database name you want to connect to. Possible database names can be retrieved with the functio listMarts |
dataset |
Dataset you want to use. To see the different datasets available within a biomaRt you can e.g. do: mart = useMart('ensembl'), followed by listDatasets(mart). |
host |
Host to connect to. Defaults to |
path |
Path that should be pasted after to host to get access to the web service URL |
port |
port to connect to, will be pasted between host and path |
archive |
Boolean to indicate if you want to access archived versions of BioMart databases. Note that this argument is now deprecated and will be removed in the future. A better alternative is to leave archive = FALSE and to specify the url of the archived BioMart you want to access. For Ensembl you can view the list of archives using |
version |
Use version name instead of biomart name to specify which BioMart you want to use |
verbose |
Give detailed output of what the method is doing while in use, for debugging |
Steffen Durinck, Mike L. Smith
if(interactive()){
mart = useMart("ensembl")
mart=useMart(biomart="ensembl", dataset="hsapiens_gene_ensembl")
}
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.