Module enthought.chaco.scales.scales

API Reference for Enthought Tool Suite 3.0.1

Functions and classes that compute ticks and labels for graph axes, with special handling of time and calendar axes.

Classes

AbstractScale - Defines the general interface for scales.
DefaultScale - A dynamic scale that tries to place ticks at nice numbers (1, 2, 5, 10) so that ticks don't "pop" as the resolution changes.
FixedScale - A scale with fixed resolution, and "nice" points that line up at multiples of the resolution
LogScale - A dynamic scale that only produces ticks and labels that work well when plotting data on a logarithmic scale.
Pow10Scale - A dynamic scale that shows only whole multiples of powers of 10 (including powers < 1).
ScaleSystem - Represents a collection of scales over some range of resolutions

frange(min, max, delta)
heckbert_interval(data_low, data_high, numticks = 8, nicefunc = _nice, enclose = False)

frange(min, max, delta)

Floating point range.
heckbert_interval(data_low, data_high, numticks = 8, nicefunc = _nice, enclose = False)

Returns a "nice" range and resolution for an interval and a preferred number of ticks, using Paul Heckbert's algorithm in Graphics Gems.

If enclose is True, then the function returns a min and a max that fall inside data_low and data_high; if enclose is False, the nice interval can be larger than the input interval.

Local name	Refers to
abs	numpy.abs
argmin	numpy.argmin
array	numpy.array
BasicFormatter	enthought.chaco.scales.formatters.BasicFormatter
bisect	bisect.bisect
ceil	math.ceil
floor	math.floor
isnan	numpy.isnan
linspace	numpy.linspace
log10	math.log10