Hi all,

I have my code written as below, however it does not give me the plot that I want. Instead of using two equations according to the conditions. It gives me a graph using the else equation regardless of the value of x_15. Can anyone help me with this?

x_15=0:40:600;

if x_15<200

y_15=75*(b+500)/(a+50)*(cos(pi*x_15/200))+75*(b+500)/(a+50);

else

y_15=(exp(-x_15/150)).*(((7*(b+110)/(a+10))*(cos(pi*x_15/200)))+(7*(b+110)/(a+10)));

end

scatter(x_15,y_15);

title('S-Shaped Pipeline FEA Model');

xlabel('X position');

ylabel('Y Position');

Thank you.

Regards \

Wei Kang

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