Package 'convertid'

Convert Symbols to Aliases and Vice Versa.

Description

convert.alias() attempts to find all possible symbol-alias combinations for a given gene symbol, i.e., it assumes the input ID to be either an Alias or a Symbol and performs multiple queries to find all possible counterparts. The input IDs are converted to title and upper case before querying and all possibilities are tested. There are species presets for Human and Mouse annotations.

Usage

convert.alias(id, species = c("Human", "Mouse"), db = NULL)

Arguments

id	(character). Vector of gene symbols.
species	(character). One of "Human" and "Mouse". Defaults to "Human".
db	(AnnotationDb object). Annotation package object.

Value

A data.frame with two columns:

	'SYMBOL': The official gene symbol.
	'ALIAS': All possible aliases.

See Also

select

Examples

convert.alias("TRPV4")

---

Retrieve Additional Annotations from Biomart

Description

convert.bm() is a wrapper for get.bm() which in turn makes use of getBM() from the biomaRt package. It takes a matrix or data frame with the IDs to be converted in one column or as row names as input and returns a data frame with additional annotations after cleaning the fetched annotations and merging them with the input data frame.

Usage

convert.bm(
  dat,
  id = "ID",
  biom.data.set = c("human", "mouse"),
  biom.mart = c("ensembl", "mouse", "snp", "funcgen", "plants"),
  host = "https://www.ensembl.org",
  biom.filter = "ensembl_gene_id",
  biom.attributes = c("ensembl_gene_id", "hgnc_symbol", "description"),
  biom.cache = rappdirs::user_cache_dir("biomaRt"),
  use.cache = TRUE,
  sym.col = "hgnc_symbol",
  rm.dups = FALSE,
  verbose = FALSE
)

Arguments

dat	matrix or data.frame. Matrix or data frame with the ids to be converted in a column or as row names.
id	character. Name of the column with the ids to be converted, special name "rownames" will use the row names.
biom.data.set	character of length one. Biomart data set to use.
biom.mart	character vector. Biomart to use (uses the first element of the vector), defaults to "ensembl".
host	character of length one. Host URL.
biom.filter	character of length one. Name of biomart filter, i.e., type of query ids, defaults to "ensembl_gene_id".
biom.attributes	character vector. Biomart attributes, i.e., type of desired result(s); make sure query id type is included!
biom.cache	character. Path name giving the location of the cache getBM() uses if use.cache=TRUE. Defaults to the value in the BIOMART_CACHE environment variable.
use.cache	(logical). Should getBM() use the cache? Defaults to TRUE as in the getBM() function and is passed on to that.
sym.col	character. Name of the column in the query result with gene symbols.
rm.dups	logical. Should duplicated input IDs (biom.filter) be removed from the result?
verbose	(logical). Should verbose output be written to the console? Defaults to FALSE.

Details

Wrapped around 'get.bm'.

Value

A data frame with the retrieved information.

Author(s)

Vidal Fey

See Also

getBM

Examples

## Not run: 
dat <- data.frame(ID=c("ENSG00000111199", "ENSG00000134121", "ENSG00000176102", "ENSG00000171611"))
bm <- convert.bm(dat)
bm

## End(Not run)

---

Convert Gene IDs Between Each Other and Fetch Annotations from Biomart

Description

Gene Symbols or Ensembl Gene IDs are converted using the Bimap interface in 'AnnotationDbi' in convertId2() but that function is only provided as fallback mechanism for the most common use cases in data analysis. The main function in the package is convert.bm() which queries Biomart using the full capacity of the API provided through the 'biomaRt' package. Presets and defaults are provided for convenience but all "marts", "filters" and "attributes" can be set by the user. Function convert.alias() converts Gene Symbols to Aliases and vice versa and function likely_symbol() attempts to determine the most likely current Gene Symbol.

Details

Package:	convertid
Type:	Package
Initial version:	0.1-0
Created:	2021-08-18
License:	GPL-3
LazyLoad:	yes

Author(s)

Vidal Fey <[email protected]> Maintainer: Vidal Fey <[email protected]>

---

Convert Gene Symbols to Ensembl Gene IDs or vice versa

Description

convertId2() uses the Bimap interface in AnnotationDbi to extract information from annotation packages. The function is limited to Human and Mouse annotations and is provided only as fallback mechanism for the most common use cases in data analysis. Please use the Biomart interface function convert.bm() for more flexibility.

Usage

convertId2(id, species = c("Human", "Mouse"))

Arguments

id	(character). Vector of gene symbols.
species	(character). One of "Human" and "Mouse". Defaults to "Human".

Value

A named character vector where the input IDs are the names and the query results the values.

See Also

Bimap-envirAPI

Examples

convertId2("ENSG00000111199")
convertId2("TRPV4")

---

Make a Query to Biomart.

Description

get.bm() is a user-friendly wrapper for getBM() from the biomaRt package with default settings for Human and Mouse. It sets all needed variables and performs the query.

Usage

get.bm(
  values,
  biom.data.set = c("human", "mouse"),
  biom.mart = c("ensembl", "mouse", "snp", "funcgen", "plants"),
  host = "https://www.ensembl.org",
  biom.filter = "ensembl_gene_id",
  biom.attributes = c("ensembl_gene_id", "hgnc_symbol", "description"),
  biom.cache = rappdirs::user_cache_dir("biomaRt"),
  use.cache = TRUE,
  verbose = FALSE
)

Arguments

values	character vector of ids to be converted.
biom.data.set	character of length one. Biomart data set to use. Defaults to 'human' (internally translated to "hsapiens_gene_ensembl" if biom.mart="ensembl").
biom.mart	character vector. Biomart to use (uses the first element of the vector), defaults to "ensembl".
host	character of length one. Host URL.
biom.filter	character of length one. Name of biomart filter, i.e., type of query ids, defaults to "ensembl_gene_id".
biom.attributes	character vector. Biomart attributes, i.e., type of desired result(s); make sure query id type is included!
biom.cache	character. Path name giving the location of the cache getBM() uses if use.cache=TRUE. Defaults to the value in the BIOMART_CACHE environment variable.
use.cache	(logical). Should getBM() use the cache? Defaults to TRUE as in the getBM() function and is passed on to that.
verbose	(logical). Should verbose output be written to the console? Defaults to FALSE.

Value

A data frame with the retrieved information.

Author(s)

Vidal Fey

See Also

getBM

Examples

## Not run: 
val <- c("ENSG00000111199", "ENSG00000134121", "ENSG00000176102", "ENSG00000171611")
bm <- get.bm(val)
bm

## End(Not run)

---

Retrieve Symbol Aliases and Previous symbols to determine a likely current symbol

Description

likely_symbol() downloads the latest version of the HGNC gene symbol database as a text file and query it to obtain symbol aliases, previous symbols and all symbols currently in use. (Optionally) assuming the input ID to be either an Alias or a Symbol or a Previous Symbol it performs multiple queries and compares the results of all possible combinations to determine a likely current Symbol.

Usage

likely_symbol(
  syms,
  alias_sym = TRUE,
  prev_sym = TRUE,
  orgnsm = "human",
  hgnc = NULL,
  hgnc_url = NULL,
  output = c("likely", "symbols", "all"),
  verbose = TRUE
)

Arguments

syms	(character). Vector of Gene Symbols to be tested.
alias_sym	(logical). Should the input be assumed to be an Alias? Defaults to TRUE.
prev_sym	(logical). Should the input be assumed to be a Previous Symbol? Defaults to TRUE.
orgnsm	(character). The organism for which the Symbols are tested.
hgnc	(data.frame). An optional data frame with the needed HGNC annotations. (Needs to match the format available at hgnc_utl!)
hgnc_url	(character). URL where to download the HGNC annotation dataset. Defaults to "ftp://ftp.ebi.ac.uk/pub/databases/genenames/new/tsv/hgnc_complete_set.txt".
output	(character). One of "likely", "symbols" and "all". Determines the scope of the output data frame. Defaults to "likely" which will return the inout Symbol and the determined likely Symbol.
verbose	(logical). Should messages be written to the console? Defaults to TRUE.

Details

Please note that the algorithm is very slow for large input vectors.

Value

A data.frame with the following columns depending on the output setting. output="likely":

	'likely_symbol'
	'input_symbol'

output="symbols":

	'current_symbols'
	'likely_symbol'
	'input_symbol'
	'all_symbols'

output="all":

	'orig_input'
	'organism'
	'current_symbols'
	'likely_symbol'
	'input_symbol'
	'all_symbols'

Note

Only fully implemented for Human for now.

Examples

## Not run: 
likely_symbol(c("ABCC4", "ACPP", "KIAA1524"))

## End(Not run)

---

Convenience Function to Convert Ensembl Gene IDs to Gene Symbols

Description

todisp2() uses Biomart by employing get.bm() to retrieve Gene Symbols for a set of Ensembl Gene IDs. It is mainly meant as a fast way to convert IDs in standard gene expression analysis output to Symbols, e.g., for visualisation, which is why the input ID type is hard coded to ENSG IDs. If Biomart is not available the function can fall back to use convertId2() or a user-provided data frame with corresponding ENSG IDs and Symbols.

Usage

todisp2(ensg, lab = NULL, biomart = TRUE, verbose = FALSE)

Arguments

ensg	(character). Vector of Ensemble Gene IDs. Other ID types are not yet supported.
lab	(data.frame). A data frame with Ensembl Gene IDs as row names and Gene Symbols in the only column.
biomart	(logical). Should Biomart be used? Defaults to TRUE.
verbose	(logical). Should verbose output be written to the console? Defaults to FALSE.

Value

A character vector of Gene Symbols.

See Also

get.bm

Examples

## Not run: 
val <- c("ENSG00000111199", "ENSG00000134121", "ENSG00000176102", "ENSG00000171611")
sym <- todisp2(val)
sym

## End(Not run)

---