svgfig.Ticks Class Reference

Inheritance diagram for svgfig.Ticks:

Public Member Functions
def	__init__
def	__repr__
def	compute_logminiticks
def	compute_logticks
def	compute_miniticks
def	compute_ticks
def	interpret
def	orient_tickmark
def	regular_miniticks
def	SVG

Public Attributes
	arrow_end
	arrow_start
	attr
	f
	high
	labels
	last_miniticks
	logbase
	low
	miniticks
	text_attr
	ticks

Static Public Attributes
dictionary	defaults = {"stroke-width":"0.25pt"}
float	minitick_end = 0.75
float	minitick_start = -0.75
int	text_angle = 0
dictionary	text_defaults = {"stroke":"none", "fill":"black", "font-size":5}
float	text_start = 2.5
float	tick_end = 1.5
float	tick_start = -1.5

Detailed Description

Superclass for all graphics primatives that draw ticks,
miniticks, and tick labels.  This class only draws the ticks.

Ticks(f, low, high, ticks, miniticks, labels, logbase, arrow_start,
      arrow_end, text_attr, attribute=value)

f                       required        parametric function along which ticks
                                        will be drawn; has the same format as
                                        the function used in Curve
low, high               required        range of the independent variable
ticks                   default=-10     request ticks according to the standard
                                        tick specification (see below)
miniticks               default=True    request miniticks according to the
                                        standard minitick specification (below)
labels                  True            request tick labels according to the
                                        standard tick label specification (below)
logbase                 default=None    if a number, the axis is logarithmic with
                                        ticks at the given base (usually 10)
arrow_start             default=None    if a new string identifier, draw an arrow
                                        at the low-end of the axis, referenced by
                                        that identifier; if an SVG marker object,
                                        use that marker
arrow_end               default=None    if a new string identifier, draw an arrow
                                        at the high-end of the axis, referenced by
                                        that identifier; if an SVG marker object,
                                        use that marker
text_attr               default={}      SVG attributes for the text labels
attribute=value pairs   keyword list    SVG attributes for the tick marks 

Standard tick specification:

    * True: same as -10 (below).
    * Positive number N: draw exactly N ticks, including the endpoints. To
      subdivide an axis into 10 equal-sized segments, ask for 11 ticks.
    * Negative number -N: draw at least N ticks. Ticks will be chosen with
      "natural" values, multiples of 2 or 5.
    * List of values: draw a tick mark at each value.
    * Dict of value, label pairs: draw a tick mark at each value, labeling
      it with the given string. This lets you say things like {3.14159: "pi"}.
    * False or None: no ticks.

Standard minitick specification:

    * True: draw miniticks with "natural" values, more closely spaced than
      the ticks.
    * Positive number N: draw exactly N miniticks, including the endpoints.
      To subdivide an axis into 100 equal-sized segments, ask for 101 miniticks.
    * Negative number -N: draw at least N miniticks.
    * List of values: draw a minitick mark at each value.
    * False or None: no miniticks. 

Standard tick label specification:

    * True: use the unumber function (described below)
    * Format string: standard format strings, e.g. "%5.2f" for 12.34
    * Python callable: function that converts numbers to strings
    * False or None: no labels 

Definition at line 2321 of file svgfig.py.

Constructor & Destructor Documentation

def svgfig.Ticks.__init__	(		self,
			f,
			low,
			high,
			ticks = -10,
			miniticks = True,
			labels = True,
			logbase = None,
			arrow_start = None,
			arrow_end = None,
			text_attr = {},
			attr
	)

Definition at line 2392 of file svgfig.py.

  def __init__(self, f, low, high, ticks=-10, miniticks=True, labels=True, logbase=None, arrow_start=None, arrow_end=None, text_attr={}, **attr):
    self.f = f
    self.low = low
    self.high = high
    self.ticks = ticks
    self.miniticks = miniticks
    self.labels = labels
    self.logbase = logbase
    self.arrow_start = arrow_start
    self.arrow_end = arrow_end

    self.attr = dict(self.defaults)
    self.attr.update(attr)

    self.text_attr = dict(self.text_defaults)
    self.text_attr.update(text_attr)