How can I rbind vectors matching their column names?

Question

rbind does not check for column names when binding together vectors:

l = list(row1 = c(10, 20), row2 = c(20, 10))
names(l$row1) = c(\"A\", \"B\")
names(l$row         


        

Answer 1

Reduce is a powerful function, but some how not frequently used ; here's an alternate implementation

This will create a rbind where if there are columns that don't match "NA" will be generated for them.

rbindedFrame = Reduce(custom_rbind,listofDataframes)  

custom_rbind = function(x1,x2){
  c1 = setdiff(colnames(x1),colnames(x2))
  c2 = setdiff(colnames(x2),colnames(x1))
  for(c in c2){##Adding missing columns from 2 in 1
    x1[[c]]=NA
  }
  for(c in c1){##Similiarly ading missing from 1 in 2
    x2[[c]]=NA
  }
  x2 = x2[colnames(x1)]
  rbind(x1,x2)
}
}