File: xw12.py

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from Numeric import *
from plplot import *

# main
#
# Does a simple bar chart, using color fill.  If color fill is
# unavailable, pattern fill is used instead (automatic).

def main():

    pladv(0)
    plvsta()
    plwind(1980.0, 1990.0, 0.0, 35.0)
    plbox("bc", 1.0, 0, "bcnv", 10.0, 0)
    plcol0(2)
    pllab("Year", "Widget Sales (millions)", "#frPLplot Example 12")

    y0 = [5, 15, 12, 24, 28, 30, 20, 8, 12, 3]

    for i in range(10):
	plcol0(i + 1)
	plpsty(0)
	fbox( (1980. + i), y0[i] )
	string = `y0[i]`
	plptex((1980. + i + .5), (y0[i] + 1.), 1.0, 0.0, .5, string)
	string = `1980 + i`
	plmtex("b", 1.0, ((i + 1) * .1 - .05), 0.5, string)

    # Restore defaults
    plcol0(1)

def fbox( x0, y0 ):

    x = [x0, x0, x0 + 1., x0 + 1.]
    y = [0., y0, y0, 0.]
    plfill(x, y)
    plcol0(1)
    pllsty(1)
    plline(x, y)

main()