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# Copyright (C) 2001-2016 Alan W. Irwin
# Bar chart 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 *
# main
#
# Does a simple bar chart, using color fill. If color fill is
# unavailable, pattern fill is used instead (automatic).
def main(w):
pos = array ([0.0, 0.25, 0.5, 0.75, 1.0])
red = array ([0.0, 0.25, 0.5, 1.0, 1.0])
green = array ([1.0, 0.5, 0.5, 0.5, 1.0])
blue = array ([1.0, 1.0, 0.5, 0.25, 0.0])
w.pladv(0)
w.plvsta()
w.plwind(1980.0, 1990.0, 0.0, 35.0)
w.plbox("bc", 1.0, 0, "bcnv", 10.0, 0)
w.plcol0(2)
w.pllab("Year", "Widget Sales (millions)", "#frPLplot Example 12")
y0 = [5, 15, 12, 24, 28, 30, 20, 8, 12, 3]
w.plscmap1l(1, pos, red, green, blue)
for i in range(10):
# w.plcol0(i + 1)
w.plcol1(i / 9.0)
w.plpsty(0)
fbox(w, (1980. + i), y0[i] )
string = str(y0[i])
w.plptex((1980. + i + .5), (y0[i] + 1.), 1.0, 0.0, .5, string)
string = str(1980 + i)
w.plmtex("b", 1.0, ((i + 1) * .1 - .05), 0.5, string)
# Restore defaults
# cmap1 default color palette.
w.plspal1("cmap1_default.pal",1)
# Must be done independently because otherwise this changes output files
# and destroys agreement with C examples.
#w.plcol0(1)
def fbox(w, x0, y0 ):
x = [x0, x0, x0 + 1., x0 + 1.]
y = [0., y0, y0, 0.]
w.plfill(x, y)
w.plcol0(1)
w.pllsty(1)
w.plline(x, y)