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79 lines
2.0 KiB
Lua
79 lines
2.0 KiB
Lua
--[[ $Id: x12.lua 9533 2009-02-16 22:18:37Z smekal $
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Bar chart demo.
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Copyright (C) 2008 Werner Smekal
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This file is part of PLplot.
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PLplot is free software you can redistribute it and/or modify
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it under the terms of the GNU General Library Public License as published
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by the Free Software Foundation either version 2 of the License, or
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(at your option) any later version.
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PLplot is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with PLplot if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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--]]
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-- initialise Lua bindings for PLplot examples.
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dofile("plplot_examples.lua")
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function pl.fbox(x0, y0)
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x = { x0, x0, x0+1,x0+1 }
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y = { 0, y0, y0, 0 }
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pl.fill(x, y);
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pl.col0(1);
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pl.lsty(1);
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pl.line(x, y);
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end
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--------------------------------------------------------------------------
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-- main
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--
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-- Does a simple bar chart, using color fill. If color fill is
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-- unavailable, pattern fill is used instead (automatic).
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--------------------------------------------------------------------------
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y0 = {}
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pos = { 0, 0.25, 0.5, 0.75, 1 }
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red = { 0, 0.25, 0.5, 1, 1 }
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green = { 1, 0.5, 0.5, 0.5, 1 }
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blue = { 1, 1, 0.5, 0.25, 0 }
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-- Parse and process command line arguments
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pl.parseopts(arg, pl.PL_PARSE_FULL);
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-- Initialize plplot
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pl.init()
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pl.adv(0)
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pl.vsta()
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pl.wind(1980, 1990, 0, 35)
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pl.box("bc", 1, 0, "bcnv", 10, 0)
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pl.col0(2)
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pl.lab("Year", "Widget Sales (millions)", "#frPLplot Example 12")
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y0 = { 5, 15, 12, 24, 28, 30, 20, 8, 12, 3}
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pl.scmap1l(1, pos, red, green, blue);
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for i=1, 10 do
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pl.col1((i-1)/9.0);
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pl.psty(0);
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pl.fbox((1980+i-1), y0[i]);
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pl.ptex((1980+i-0.5), (y0[i]+1), 1, 0, 0.5, tostring(y0[i]));
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pl.mtex("b", 1, (i*0.1-0.05), 0.5, tostring(1980+i-1));
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end
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pl.plend();
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