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# Copyright (C) 2001-2016 Alan W. Irwin
# Histogram demo.
#
# This file is part of PLplot.
#
# PLplot is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PLplot is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with PLplot; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
from numpy import *
NPTS = 2047
# main
#
# Draws a histogram from sample data.
def main(w):
# Fill up data points
delta = 2.0 * pi / NPTS
data = sin(delta*arange(NPTS))
w.plcol0(1)
w.plhist(data, -1.1, 1.1, 44, 0)
w.plcol0(2)
w.pllab("#frValue", "#frFrequency",
"#frPLplot Example 5 - Probability function of Oscillator")
# Restore defaults
# Must be done independently because otherwise this changes output files
# and destroys agreement with C examples.
#w.plcol0(1)
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