text3stext: returns a subtext
In rbsa: Ancillary Functions for R Programming

Description Usage Arguments Details Value Examples

from a text, gives back a portion according to the sub argument. Delimiting positions are included, so sub=c(1,1,1,1) gives back the first character of text.

1 2	text3stext(text,sub=c(l1=1,p1=1,l2=Inf,p2=Inf))

`text`	A character vector containing the text (a component, a line).
`sub`	A numeric(4) indicating the portion of the text to consider; can be a matrix but only one row is allowed. See the function text3interval for details.

Definition of the subtext is flexible (outside positions are interpreted as minimum / maximum positions).

The resulting sub-text

 
  aa <- c(paste(letters,collapse=""),paste(LETTERS,collapse=""),paste(0:9,collapse="")); 
  text3stext(aa); 
  text3stext(aa,c(1,12,1,15)); 
  text3stext(aa,c(1,12,2,15)); 
  text3stext(aa,c(1,12,3,15)); 
  # In this last example, the last character of line 2 is kept (flexibility)! 
  text3stext(aa,c(2,68,3,15));