MATLAB Programming

Example — The Portfolio Container
function display(p)
% DISPLAY Display a portfolio object
for k = 1:length(p.indAssets)
display(p.indAssets{k})
end
stg = sprintf('\nAssets for Client: %s\nTotal Value: %9.2f\n',...
p.name,p.totalValue);
disp(stg)
The Portfolio pie3 Method
The portfolio class overloads the MATLAB pie3 function to accept a portfolio
object and display a 3-D pie chart illustrating the relative asset mix of the
client’s portfolio. MATLAB calls the @portfolio/pie3.m version of pie3
whenever the input argument is a single portfolio object.
function pie3(p)
% PIE3 Create a 3-D pie chart of a portfolio
stockAmt = 0; bondAmt = 0; savingsAmt = 0;
for k = 1:length(p.indAssets)
if isa(p.indAssets{k}, 'stock')
stockAmt = stockAmt + ...
get(p.indAssets{k}, 'CurrentValue');
elseif isa(p.indAssets{k}, 'bond')
bondAmt = bondAmt + ...
get(p.indAssets{k}, 'CurrentValue');
elseif isa(p.indAssets{k}, 'savings')
savingsAmt = savingsAmt + ...
get(p.indAssets{k}, 'CurrentValue');
end
end
i = 1;
if stockAmt ~= 0
label(i) = {'Stocks'};
pieVector(i) = stockAmt;
i = i + 1;
end
if bondAmt ~= 0
label(i) = {'Bonds'};
pieVector(i) = bondAmt;
i = i + 1;
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