MATLAB Object-Oriented Programming

Example Code Discussion

function str = char(obj)

if all(obj.coef == 0)

s = '0';

str = s;

return

else

d = length(obj.coef)-1;

s = cell(1,d);

ind = 1;

for a = obj.coef;

if a ~= 0;

if ind ~= 1

if a > 0

s(ind) = {' + '};

ind = ind + 1;

else

s(ind) = {' - '};

a = -a;

ind = ind + 1;

end

end

if a ~= 1 || d == 0

if a == -1

s(ind) = {'-'};

ind = ind + 1;

else

s(ind) = {num2str(a)};

ind = ind + 1;

if d > 0

s(ind) = {'*'};

ind = ind + 1;

end

end

end

if d >= 2

s(ind) = {['x^' int2str(d)]};

ind = ind + 1;

elseif d == 1

s(ind) = {'x'};

ind = ind + 1;

end

end

Convert DocPolynom object to

char that represents the

expression:

y = f(x)

See “Convert DocPolynom

Objects to Other Types” on page

19-15

19 Defining Custom Data Types