An error message concerning plot

[Haitao Cai]

Hi all,

      I just installed Octave in my OSX via the binary installer and some other things according to http://jatinganhotra.com/blog/2014/01/21/installing-octave-on-os-x-10-dot-9-mavericks/ . However, I cannot make 1 and 6 in the link. Then I started Octave from the Launch Pad and run a simple script containing the following code:

" CA CB are REWARD prob.

Nturns=1000; gamma=0.005

A=zeros(Nturns,1);

B=zeros(Nturns,1);

CA = 0.6;

CB = 0.3;

A(1) = 0.9;

B(1) = 0.1;

for n=2:Nturns

    if rand(1)<A(1)

        Output = rand(1)<CA;

A(n) = (1.0-gamma)*A(n-1) + gamma*Output;

  B(n) = 1.0-A(n);

    else

Output = rand(1)<CB;

B(n) = (1.0-gamma)*B(n-1)  + gamma*Output;

A(n) = 1.0-B(n);

    endif

end

plot(1:Nturns,A,'r',1:Nturns,B,'b')

CA CB are PENALTY prob.

Nturns=1000; gamma=0.005

A=zeros(Nturns,1);

B=zeros(Nturns,1);

CA = 0.6;

CB = 0.3;

A(1) = 0.5;

B(1) = 0.5;

for n=2:Nturns

    if rand(1)<A(1)

        Output = rand(1)>CA;

A(n) = (1.0-gamma)*A(n-1) + gamma*Output;

  B(n) = 1.0-A(n);

    else

Output = rand(1)>CB;

B(n) = (1.0-gamma)*B(n-1)  + gamma*Output;

A(n) = 1.0-B(n);

    endif

end

plot(1:Nturns,A,'r',1:Nturns,B,'b') "

What I got from Octave is the following error message:

"gamma =  0.0050000

gamma =  0.0050000

Unknown or ambiguous terminal name 'qt'

gnuplot> set terminal aqua enhanced title "Figure 1" size 560 420  font "*,6" dashlength 1

                      ^

         line 0: unknown or ambiguous terminal type; type just 'set terminal' for a list"

What can I do to solve this problem?

Thanks in advance!

Haitao