How can I plot the graph?

I want to plot the function where y=x/3 until y=25 where it is constant y=25

function output = carFunc(x)

if (x >= 75)

output = 25;

else

output = x/3;

end

plot(x,carFunc(x))

end

Answer 1

[Chunru]

x = 0:100;
plot(x,carFunc(x)); 
ylim([0 30])

function output = carFunc(x)
    output = zeros(size(x));
    idx = (x >= 75);
    output(idx) = 25;
    idx = (x < 75);
    output(idx) = x(idx)/3;
end

[Sauce]

What does output=zeros(size(x)); do?

[Chunru]

"output=zeros(size(x));" allocates memory for the variable output and initializes it with 0s. This may make the code more efficient.

Answer 2

[Behzad Eydiyoon]

function output = carFunc(x)
   x=0:0.1:75;
   if (x >= 75)
       output = 25;
   else
       output = x/3;
   end

plot(x,output)
end