Mercurial > octave-nkf
annotate scripts/plot/pareto.m @ 14237:11949c9795a0
Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Add clf() to all demos using plot features to get reproducibility.
Use 64 as input to all colormaps (jet (64)) to get reproducibility.
* bicubic.m, cell2mat.m, celldisp.m, cplxpair.m, interp1.m, interp2.m,
interpft.m, interpn.m, profile.m, profshow.m, convhull.m, delaunay.m,
griddata.m, inpolygon.m, voronoi.m, autumn.m, bone.m, contrast.m, cool.m,
copper.m, flag.m, gmap40.m, gray.m, hot.m, hsv.m, image.m, imshow.m, jet.m,
ocean.m, pink.m, prism.m, rainbow.m, spring.m, summer.m, white.m, winter.m,
condest.m, onenormest.m, axis.m, clabel.m, colorbar.m, comet.m, comet3.m,
compass.m, contour.m, contour3.m, contourf.m, cylinder.m, daspect.m,
ellipsoid.m, errorbar.m, ezcontour.m, ezcontourf.m, ezmesh.m, ezmeshc.m,
ezplot.m, ezplot3.m, ezpolar.m, ezsurf.m, ezsurfc.m, feather.m, fill.m,
fplot.m, grid.m, hold.m, isosurface.m, legend.m, loglog.m, loglogerr.m,
pareto.m, patch.m, pbaspect.m, pcolor.m, pie.m, pie3.m, plot3.m, plotmatrix.m,
plotyy.m, polar.m, quiver.m, quiver3.m, rectangle.m, refreshdata.m, ribbon.m,
rose.m, scatter.m, scatter3.m, semilogx.m, semilogxerr.m, semilogy.m,
semilogyerr.m, shading.m, slice.m, sombrero.m, stairs.m, stem.m, stem3.m,
subplot.m, surf.m, surfc.m, surfl.m, surfnorm.m, text.m, title.m, trimesh.m,
triplot.m, trisurf.m, uigetdir.m, uigetfile.m, uimenu.m, uiputfile.m,
waitbar.m, xlim.m, ylim.m, zlim.m, mkpp.m, pchip.m, polyaffine.m, spline.m,
bicgstab.m, cgs.m, gplot.m, pcg.m, pcr.m, treeplot.m, strtok.m, demo.m,
example.m, rundemos.m, speed.m, test.m, calendar.m, datestr.m, datetick.m,
weekday.m: Revamp %!demos to use Octave coding conventions on spacing, etc.
| author | Rik <octave@nomad.inbox5.com> |
|---|---|
| date | Fri, 20 Jan 2012 12:59:53 -0800 |
| parents | 72c96de7a403 |
| children | 4506eade9f04 |
| rev | line source |
|---|---|
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maint: update copyright notices for 2012
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1 ## Copyright (C) 2007-2012 David Bateman |
| 7220 | 2 ## Copyright (C) 2003 Alberto Terruzzi |
| 3 ## | |
| 4 ## This file is part of Octave. | |
| 5 ## | |
| 6 ## Octave is free software; you can redistribute it and/or modify it | |
| 7 ## under the terms of the GNU General Public License as published by | |
| 8 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 9 ## your option) any later version. | |
| 10 ## | |
| 11 ## Octave is distributed in the hope that it will be useful, but | |
| 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 ## General Public License for more details. | |
| 15 ## | |
| 16 ## You should have received a copy of the GNU General Public License | |
| 17 ## along with Octave; see the file COPYING. If not, see | |
| 18 ## <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 ## -*- texinfo -*- | |
|
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21 ## @deftypefn {Function File} {} pareto (@var{x}) |
| 7220 | 22 ## @deftypefnx {Function File} {} pareto (@var{x}, @var{y}) |
| 23 ## @deftypefnx {Function File} {} pareto (@var{h}, @dots{}) | |
| 24 ## @deftypefnx {Function File} {@var{h} =} pareto (@dots{}) | |
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25 ## Draw a Pareto chart, also called ABC chart. A Pareto chart is a bar graph |
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26 ## used to arrange information in such a way that priorities for process |
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27 ## improvement can be established. It organizes and displays information |
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28 ## to show the relative importance of data. The chart is similar to the |
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29 ## histogram or bar chart, except that the bars are arranged in decreasing |
| 7220 | 30 ## order from left to right along the abscissa. |
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31 ## |
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32 ## The fundamental idea (Pareto principle) behind the use of Pareto |
| 7220 | 33 ## diagrams is that the majority of an effect is due to a small subset of the |
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34 ## causes, so for quality improvement the first few (as presented on the |
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35 ## diagram) contributing causes to a problem usually account for the majority |
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36 ## of the result. Thus, targeting these "major causes" for elimination |
| 7220 | 37 ## results in the most cost-effective improvement scheme. |
| 38 ## | |
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39 ## The data are passed as @var{x} and the abscissa as @var{y}. If @var{y} is |
| 7220 | 40 ## absent, then the abscissa are assumed to be @code{1 : length (@var{x})}. |
| 41 ## @var{y} can be a string array, a cell array of strings or a numerical | |
| 42 ## vector. | |
| 43 ## | |
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44 ## The optional return value @var{h} is a 2-element vector with a graphics |
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45 ## handle for the created bar plot and a second handle for the created line |
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46 ## plot. |
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47 ## |
| 7220 | 48 ## An example of the use of @code{pareto} is |
| 49 ## | |
| 50 ## @example | |
| 51 ## @group | |
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52 ## Cheese = @{"Cheddar", "Swiss", "Camembert", ... |
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53 ## "Munster", "Stilton", "Blue"@}; |
| 7220 | 54 ## Sold = [105, 30, 70, 10, 15, 20]; |
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55 ## pareto (Sold, Cheese); |
| 7220 | 56 ## @end group |
| 57 ## @end example | |
| 58 ## @end deftypefn | |
| 59 | |
| 60 function h = pareto (varargin) | |
| 61 | |
| 62 if (nargin != 1 && nargin != 2) | |
| 63 print_usage (); | |
| 64 endif | |
| 65 | |
| 66 x = varargin {1}(:).'; | |
| 67 if (nargin == 2) | |
| 68 y = varargin {2}(:).'; | |
| 69 if (! iscell (y)) | |
| 70 if (ischar (y)) | |
| 10549 | 71 y = cellstr (y); |
| 7220 | 72 else |
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Replace function handles with function names in cellfun calls for 15% speedup.
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73 y = cellfun ("num2str", num2cell (y), "uniformoutput", false); |
| 7220 | 74 endif |
| 75 endif | |
| 76 else | |
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77 y = cellfun ("int2str", num2cell (1 : numel(x)), |
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78 "uniformoutput", false); |
| 7220 | 79 endif |
| 80 | |
| 81 [x, idx] = sort (x, "descend"); | |
| 82 y = y (idx); | |
| 83 cdf = cumsum (x); | |
| 7221 | 84 maxcdf = max(cdf); |
| 85 cdf = cdf ./ maxcdf; | |
| 7228 | 86 cdf95 = cdf - 0.95; |
| 87 idx95 = find(sign(cdf95(1:end-1)) != sign(cdf95(2:end)))(1); | |
| 7220 | 88 |
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89 [ax, hbar, hline] = plotyy (1 : idx95, x (1 : idx95), |
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90 1 : length(cdf), 100 .* cdf, |
| 10549 | 91 @bar, @plot); |
| 7220 | 92 |
| 93 axis (ax(1), [1 - 0.6, idx95 + 0.6, 0, maxcdf]); | |
| 94 axis (ax(2), [1 - 0.6, idx95 + 0.6, 0, 100]); | |
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95 set (ax(2), "ytick", [0, 20, 40, 60, 80, 100], |
| 7220 | 96 "yticklabel", {"0%", "20%", "40%", "60%", "80%", "100%"}); |
| 97 set (ax(1), "xtick", 1 : idx95, "xticklabel", y (1: idx95)); | |
| 98 set (ax(2), "xtick", 1 : idx95, "xticklabel", y (1: idx95)); | |
| 99 | |
| 100 if (nargout > 0) | |
| 101 h = [hbar; hline]; | |
| 102 endif | |
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103 |
| 7220 | 104 endfunction |
| 105 | |
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106 |
| 7220 | 107 %!demo |
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108 %! clf; |
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109 %! colormap (jet (64)); |
| 7220 | 110 %! Cheese = {"Cheddar", "Swiss", "Camembert", "Munster", "Stilton", "Blue"}; |
| 111 %! Sold = [105, 30, 70, 10, 15, 20]; | |
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112 %! pareto (Sold, Cheese); |
| 7220 | 113 |
| 114 %!demo | |
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115 %! clf; |
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116 %! % Suppose that we want establish which products makes 80% of turnover. |
| 7220 | 117 %! Codes = {"AB4","BD7","CF8","CC5","AD11","BB5","BB3","AD8","DF3","DE7"}; |
| 118 %! Value = [2.35 7.9 2.45 1.1 0.15 13.45 5.4 2.05 0.85 1.65]'; | |
| 119 %! SoldUnits = [54723 41114 16939 1576091 168000 687197 120222 168195, ... | |
| 120 %! 1084118 55576]'; | |
| 121 %! pareto (Value.*SoldUnits, Codes); | |
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122 |