R/extractSingleBetaroll.R

In bplloyd/CoreHF: What the package does (short line)

extractSingleBetaroll = function(Fm.roll, name){
  #require(xts)
  nonerrs = which(sapply(Fm.roll,class) == "tsfm")
  if(length(nonerrs) > 0){
    factor.names = unique(unlist(lapply(Fm.roll[nonerrs], function(m)names(coef(m)[name, ]))))
    i0 = min(nonerrs)
    result = matrix(NA, nrow = length(Fm.roll), ncol = length(factor.names))
    colnames(result) = factor.names
    for (i in nonerrs){
      if(name %in% row.names(coef(Fm.roll[[i]]))){
        if(class(Fm.roll[[i]]) == "tsfm"){
          coef.i = as.matrix(coef(Fm.roll[[i]])[name, factor.names])
          result[i, colnames(coef.i)] = coef.i
        }
      }
    }
    row.names(result) = names(Fm.roll)
    return(result)
  } else {
    stop("All models are errors!")
  }
 
  
}