how to get the lower part of the Airfoil ?

i'm trying to plot an airfoil shapes using CST generator, but can't get all the graph, just the +Y part. even i'm getting the output correct as .txt. can any one tell me where is the problem ?

Answer 1

[Geoff Hayes]

oussama - when you call

 plot(x,y)

to plot the upper half of your airfoil, the lower half plot (graphics object) is cleared. Try using

 hold on;

to retain the previous plot. See hold for details.