[Gnuplot-bugs] problem for 'set arrow ... rto ...'

[Shigeharu T. <sh...@ie...>]

shige 06/29 2004
----------------

I found a problem of gnuplot-4.0.0:

 gnuplot> set arrow from 1,2 rto 0.5,0.5
 gnuplot> set arrow from 1,2 to 0.5,0.5 
 gnuplot> show arrow

        arrow 1, linetype 1, linewidth 1.000  nofilled back
          from (1, 2, 0) to (0.5, 0.5, 0)
        arrow 2, linetype 1, linewidth 1.000  nofilled back
          from (1, 2, 0) to (0.5, 0.5, 0)

that is, the behavior for "rto" is the same as for "to". 
The following small patch may fix it.

----- From here -----
*** gnuplot-org/src/set.c	Wed May  5 01:58:01 2004
--- gnuplot/src/set.c	Tue Jun 29 20:25:58 2004
***************
*** 675,686 ****
  	/* get end or relative end position */
  	if (equals(c_token, "to") || equals(c_token,"rto")) {
  	    if (set_end) { duplication = TRUE; break; }
  	    c_token++;
  	    if (END_OF_COMMAND)
  		int_error(c_token, "end coordinates expected");
  	    /* get coordinates */
  	    get_position(&epos);
! 	    relative = (equals(c_token,"rto")) ? TRUE : FALSE;
  	    set_end = TRUE;
  	    continue;
  	}
--- 675,687 ----
  	/* get end or relative end position */
  	if (equals(c_token, "to") || equals(c_token,"rto")) {
  	    if (set_end) { duplication = TRUE; break; }
+ 	    relative = (equals(c_token,"rto")) ? TRUE : FALSE;
  	    c_token++;
  	    if (END_OF_COMMAND)
  		int_error(c_token, "end coordinates expected");
  	    /* get coordinates */
  	    get_position(&epos);
! 	    /* relative = (equals(c_token,"rto")) ? TRUE : FALSE; */
  	    set_end = TRUE;
  	    continue;
  	}
----- To here -----

+========================================================+
 Shigeharu TAKENO     NIigata Institute of Technology
                       kashiwazaki,Niigata 945-1195 JAPAN
 sh...@ie...   TEL(&FAX): +81-257-22-8161
+========================================================+