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Update: FASTA files may contain gap and stop characters

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This commit is contained in:
hyginn 2017-10-14 18:26:16 -04:00
parent d9e7813d27
commit 153e7dcf00
1 changed files with 2 additions and 2 deletions
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4
scripts/ABC-dbUtilities.R
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@ -33,7 +33,7 @@ if (!require(xml2, quietly = TRUE)) {
dbSanitizeSequence <- function(s, unambiguous = TRUE) {
# Remove FASTA header lines, if any,
# flatten any structure that s has,
# remove all non-letters,
# remove all non-letters except "-" (gap) and "*" (stop),
# convert to uppercase.
#
# Parameters:
@ -51,7 +51,7 @@ dbSanitizeSequence <- function(s, unambiguous = TRUE) {
s <- unlist(strsplit(s, "\n")) # split up at linebreaks, if any
s <- s[! grepl("^>", s)] # drop all lines beginning">" (FASTA header)
s <- paste(s, collapse="") # combine into single string
s <- toupper(gsub("[^a-zA-Z]", "", s))
s <- toupper(gsub("[^a-zA-Z*-]", "", s))
if (unambiguous) {
amb <- "([bjouxzBJOUXZ])" # parentheses capture the match
ambChar <- unlist(regmatches(s, regexec(amb, s)))[1]