edit_curv
=========

interactive graphic curve editor



Calling Sequence
~~~~~~~~~~~~~~~~


::

    [x,y,ok,gc] = edit_curv(y)
    [x,y,ok,gc] = edit_curv(x,y)
    [x,y,ok,gc] = edit_curv(x,y,job)
    [x,y,ok,gc] = edit_curv(x,y,job,tit)
    [x,y,ok,gc] = edit_curv(x,y,job,tit,gc)




Arguments
~~~~~~~~~

:x vector of x coordinates
: :y vector of y coordinates
: :job a character string formed by one to three of the characters
'a','x','y'
    :'a' to add points to the edited curve
    : :'x' to modify x coordinates of the edited curve points
    : :'y' to modify y coordinates of the edited curve points
    :

: :tit a vector of three character strings which give the curve legend
: :gc a list of graphic window parameters: `gc=list(rect,nax)`
    :rect bounds of the graphics (see plot2d for details)
    : :nax graduation parameters (see plot2d for details)
    :

: :ok indicator if ok==%t user as returned with 'ok' menu else user as
  returned with 'abort' menu : list (graphical objects created under
  `edit_curv`
:



Description
~~~~~~~~~~~

`edit_curv` is an interactive graphic curve editor. To add a new point
simply click at the desired location, the added point will be
connected to the nearest end-point. to move a point click on it, drag
the mouse to the new position and click to set the new position