An Options pay-off question

I am trying to create a scenario where x changes from 1 to 5 with an interval of 0.1. If x<1.5, y =1.5; if 1.5<=x<3; y=x; if x>3, y = 3. I need to plot y as a function of x.

The problem is that creating a nested if loop does not create the graph of the last loop. Here's my code:

for x = 1:0.1:5
if (x<1.5)
y = 1.5;
plot(x,y)
hold on
elseif (1.5<=x<3)
y=x;
plot(x,y)
else
y=3;
plot(x,y)
hold off
end
end

[Pallav Mishra]

Oh I got it..my elseif construct was wrong..my code should have been:

>> for x = 1:0.1:5
if (x < 1.5)
y = 1.5;
plot(x,y)
hold on
elseif (x >= 1.5) && (x < 3)
y = x;
plot(x,y)
else
y = 3;
plot(x,y)
end
end

Answer 1

[Walter Roberson]

Right. MATLAB has no range-test operator.

Answer 2

[Jan]

See FEX: anyExceed.