'''

Illustration of upper and lower limit symbols on errorbars

'''

from math import pi

from numpy import array, arange, sin

import pylab as P

fig = P.figure()

x = arange(10.0)

y = sin(arange(10.0)/20.0*pi)

P.errorbar(x, y, yerr=0.1, capsize=3)

y = sin(arange(10.0)/20.0*pi) + 1

P.errorbar(x, y, yerr=0.1, uplims=True)

y = sin(arange(10.0)/20.0*pi) + 2

upperlimits = array([1, 0]*5)

lowerlimits = array([0, 1]*5)

P.errorbar(x, y, yerr=0.1, uplims=upperlimits, lolims=lowerlimits)

P.xlim(-1, 10)

fig = P.figure()

x = arange(10.0)/10.0

y = (x + 0.1)**2

P.errorbar(x, y, xerr=0.1, xlolims=True)

y = (x + 0.1)**3

P.errorbar(x + 0.6, y, xerr=0.1, xuplims=upperlimits, xlolims=lowerlimits)

y = (x + 0.1)**4

P.errorbar(x + 1.2, y, xerr=0.1, xuplims=True)

P.xlim(-0.2, 2.4)

P.ylim(-0.1, 1.3)

P.show()