関数の定義によるレポートの書式設定

function rptpop(doctype)
%RPTPOP DOM-based report example
%
%   This example is based on the MATLAB example: "Predicting the US
%   Population." That example was generated using MATLAB Publish. This
%   example is generated using the DOM and Report APIs. This example is
%   intended to illustrate a simple use of the APIs, one that does not
%   entail use of holes or templates.
%
%   rptpop() generates an HTML version of the report.
% 
%   rptpop(doctype) generates a report of the specified type:
%   "html", "docx", or "pdf".

%   Copyright MathWorks, 2013-2025

% These statements eliminate the need to qualify the names of DOM and
% Report API objects in this function, e.g., you can refer to
% mlreportgen.report.Report simply as Report.
import mlreportgen.dom.*
import mlreportgen.report.*

if nargin < 1
    doctype = "html";
end

% Create a report.
rpt = Report("population", doctype);

% Create a title for the report.
h = Heading(2, "Predicting the US Population");

% Create a border format object that effectively draws a light gray
% rule under the title.
b = Border();
b.BottomStyle = "single";
b.BottomColor = "LightGray";
b.BottomWidth = "1pt";

% Set the style of the title programmatically to be dark orange with 
% a light gray rule under it.
%
% Note that we could have achieved the same effect
% by defining a title style in a template associated with this object
% and setting the heading's StyleName property to the name of the 
% template-defined style, e.g.,
%
% h.StyleName = 'Title';
%
% This would allow us to change the appearance of the title without 
% having to change the code.
%
% Note also that we append the border and color format objects to the
% heading's existing Style array. This avoids overwriting the
% heading's existing OutlineLevel format.
h.Style = [h.Style {Color("DarkOrange"), b}];

% Append the heading to the document.
append(rpt, h);

function addBodyPara(rpt, text)
% Format report text and append it to a document.
import mlreportgen.dom.*;
p = Paragraph(text);
p.Style = {FontFamily("Arial"), FontSize("10pt")};
append(rpt, p);
end

function addPlot(rpt)
% Add a snapshot of the current figure to the report with the Figure
% reporter.
import mlreportgen.report.*;

figReporter = Figure(gcf);

% Set image height and width.
figReporter.Scaling = "custom";
figReporter.Width = "5in";
figReporter.Height = "4in";

% Append image to document.
append(rpt, figReporter);

% Delete plot figure window.
delete(gcf);

end

addBodyPara(rpt, "This example shows that using polynomials of " + ...
    "even modest degree to predict the future by extrapolating " + ...
    "data is a risky business.");
addBodyPara(rpt, "This example is older than MATLAB. It started as " + ...
    "an exercise in ""Computer Methods for Mathematical " + ...
    "Computations"", by Forsythe, Malcolm and Moler, published " + ...
    "by Prentice-Hall in 1977.");
addBodyPara(rpt, "Now, MATLAB and Handle Graphics make it " + ...
    "much easier to vary the parameters and see the results, " + ...
    "but the underlying mathematical principles are unchanged.");
addBodyPara(rpt, "Here is the US Census data from 1900 to 2000.");

% Time interval
t = (1900:10:2000)';

% Population
p = [75.995 91.972 105.711 123.203 131.669 ...
    150.697 179.323 203.212 226.505 249.633 281.422]';

% Plot
plot(t,p,"bo");
axis([1900 2020 0 400]);
title("Population of the U.S. 1900-2000");
ylabel("Millions");

% Add the plot to the document (see addPlot function below).
addPlot(rpt);