gcq <- function(input, MH, equalTo=F, expected, CRISPResso=T){
#' gcq
#'
#' This function is for calculating GC content in CRISPR/Cas9 deletions that have already been analysed using the mhq function.
#' It filters the deletions for those with a given amount of microhomology and then performs
#' a chi sqaure test to compare the observed vs the expected GC content of the microhomologies.
#'
#' \cr
#'
#' Output is a dataframe with columns:
#'
#' \itemize{
#' \item baseType = GC bases or AT bases
#' \item baseNum = number of bases of each type (in alleles with the given amount of microhomology)
#' \item baseProb = observed number of bases of each type in the microhomologies analysed (0 to 1 a.k.a 0 to 100%)
#' \item expectedProb = expected probability (0 to 1) of bases of each type (known background for the region of the deletions - determined by the user)
#' \item pval = chi sqaure test p value (chance of finding the observed vs expected probability)
#' }
#'
#' @examples
#' gcq(mhqOutCRISPResso, MH=1, equalTo=F, expected=0.46, CRISPResso=T)
#' gcq(mhqOutSanger, MH=2, equalTo=T, expected=0.51, CRISPResso=F)
#'
#' @param input dataframe output after running mhq(yourData)
#' @param MH microhomology amount to filter for
#' @param equalTo if set to TRUE search ONLY for microhomologies equal to MH. If set to FALSE search for microhomologies greater than or equal to MH
#' @param expected background GC content over the region containing deletions (if 50 percent background, expected=0.5.) Determined by the user.
#' @param CRISPResso are you analysing a dataframe containing analysed CRISPResso data?
#'
#' @export
#'
if (CRISPResso==T){
Results <- gcq_CRISPResso(input, MH, equalTo, expected)
} else if (CRISPResso==F){
Results <- gcq_Sanger(input, MH, equalTo, expected)
} else {
cat("Define whether you are analysing CRISPResso data or Sanger / Other data by setting CRISPResso=TRUE or FALSE")
}
return(Results)
}
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