If statement

[A . M . Zainal-Abidin]

 Hello,

I am trying to create a stem plot for  integers  ranging 
from 75 to 81. I tried using the if statements so that if 
the integer is equal or larger than 80, the assigned 
figure is 1 and if the figure is below or equal to 75, 
then the assigned figure is zero. The rest in between will 
be assigned 0.75 (or some arbitrary figure). the script is 
as below.

%Mould risk for wall 1
w1=linspace(0,1,length((weeklyaverage1));
for i=1:length((weeklyaverage1));
 if (weeklyaverage1>=80)  w1(i)=1;
 elseif (weeklyaverage1<=75)  w1(i)=0;
 else w1(i)=0.75;
 endif
end
figure();
clf;
stem(w1);

However, the stem plot shows that all the figures assigned 
at 0.75, meaning all the figures that I have are between 
76 and 79. Is my script at fault here? I have tried using 
switch statement but the stem plot still shows the same 
pattern.

Thank you.

Murad