svgfig.Fig Class Reference

Public Member Functions
def	__init__ (self, d, kwds)
def	__repr__ (self)
def	SVG (self, trans=None)

Public Attributes
	d
	trans

Detailed Description

Stores graphics primitive objects and applies a single coordinate
transformation to them. To compose coordinate systems, nest Fig
objects.

Fig(obj, obj, obj..., trans=function)

obj     optional list    a list of drawing primatives
trans   default=None     a coordinate transformation function

>>> fig = Fig(Line(0,0,1,1), Rect(0.2,0.2,0.8,0.8), trans="2*x, 2*y")
>>> print fig.SVG().xml()
<g>
    <path d='M0 0L2 2' />
    <path d='M0.4 0.4L1.6 0.4ZL1.6 1.6ZL0.4 1.6ZL0.4 0.4ZZ' />
</g>
>>> print Fig(fig, trans="x/2., y/2.").SVG().xml()
<g>
    <path d='M0 0L1 1' />
    <path d='M0.2 0.2L0.8 0.2ZL0.8 0.8ZL0.2 0.8ZL0.2 0.2ZZ' />
</g>

Definition at line 710 of file svgfig.py.

Constructor & Destructor Documentation

def svgfig.Fig.__init__	(		self,
			d,
			kwds
	)

Definition at line 741 of file svgfig.py.

  def __init__(self, *d, **kwds):
    self.d = list(d)
    defaults = {"trans":None}
    defaults.update(kwds)
    kwds = defaults

    self.trans = kwds["trans"]; del kwds["trans"]
    if len(kwds) != 0:
      raise TypeError("Fig() got unexpected keyword arguments %s" % kwds.keys())

Member Function Documentation

def svgfig.Fig.__repr__

(

self

)

Definition at line 733 of file svgfig.py.

Referenced by data_sources.json_file.__str__().

  def __repr__(self):
    if self.trans == None:
      return "<Fig (%d items)>" % len(self.d)
    elif isinstance(self.trans, basestring):
      return "<Fig (%d items) x,y -> %s>" % (len(self.d), self.trans)
    else:
      return "<Fig (%d items) %s>" % (len(self.d), self.trans.__name__)

def svgfig.Fig.SVG	(		self,
			trans = None
	)

Apply the transformation "trans" and return an SVG object.

Coordinate transformations in nested Figs will be composed.

Definition at line 751 of file svgfig.py.

References svgfig.Fig.d, svgfig.totrans(), and svgfig.Fig.trans.

  def SVG(self, trans=None):
    """Apply the transformation "trans" and return an SVG object.

    Coordinate transformations in nested Figs will be composed.
    """

    if trans == None: trans = self.trans
    if isinstance(trans, basestring): trans = totrans(trans)

    output = SVG("g")
    for s in self.d:
      if isinstance(s, SVG):
        output.append(s)

      elif isinstance(s, Fig):
        strans = s.trans
        if isinstance(strans, basestring): strans = totrans(strans)

        if trans == None: subtrans = strans
        elif strans == None: subtrans = trans
        else: subtrans = lambda x,y: trans(*strans(x, y))

        output.sub += s.SVG(subtrans).sub

      elif s == None: pass

      else:
        output.append(s.SVG(trans))

    return output

Member Data Documentation

svgfig.Fig.d

Definition at line 742 of file svgfig.py.

Referenced by svgfig.Frame.__repr__(), svgfig.Path.__repr__(), svgfig.Poly.__repr__(), svgfig.Text.__repr__(), svgfig.TextGlobal.__repr__(), svgfig.Dots.__repr__(), svgfig.XErrorBars.__repr__(), svgfig.YErrorBars.__repr__(), svgfig.Poly.Path(), svgfig.Fig.SVG(), svgfig.Path.SVG(), svgfig.Text.SVG(), svgfig.TextGlobal.SVG(), svgfig.Dots.SVG(), svgfig.XErrorBars.SVG(), and svgfig.YErrorBars.SVG().

svgfig.Fig.trans

Definition at line 734 of file svgfig.py.

Referenced by svgfig.Fig.SVG(), and svgfig.Plot.SVG().