[Octave-bug-tracker] [bug #34158] axis with x_min>x_max

[Matthias Jüschke]

URL:
  <http://savannah.gnu.org/bugs/?34158>

                 Summary: axis with x_min>x_max
                 Project: GNU Octave
            Submitted by: maju
            Submitted on: Sun 28 Aug 2011 06:21:10 PM GMT
                Category: Plotting with gnuplot
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.4.2
        Operating System: GNU/Linux

    _______________________________________________________

Details:

Using axis with x_min>x_max the x-axis is set to [0,1].
Example:

plot(1:2)
axis([2 1 1 2])


This could be solved asking in axis.m in

function curr_axis = __axis__ (ca, ax, varargin)
...
% ask instead of
if (ax(i) == ax(i+1))
  error ("axis: limits(%d) cannot equal limits(%d)", i, i+1);
endif
% for
if (ax(i) <= ax(i+1))
  error ("axis: limits(%d) has to be less than limits(%d)", i, i+1);
endif

Alternativly, the values could be swapped (and the axis direction can be
changed). 

The same problem occurs using xlim.




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?34158>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/