How to avoid the split line

Hello,

When I am using the surf matlab's function, I get a split line int he middle of the representation, a plit line produced for a change of colours. I do not know how to avoid that, it shouldn't be there because two consecutive points have the same value so they should have the same color.

It is a littne messy, so I think with an example it would became clearer.

Code:

 [Th,Ph]=meshgrid(-20:20,0:1:180);
 [mM,nM]=meshgrid(1:10,1:10);
 x1=sin(Th*pi/180).*cos(Ph*pi/180);
 y1=sin(Th*pi/180).*sin(Ph*pi/180);
 Tx=2*pi*x1; Ty=2*pi*y1;
 FA=exp(1i.*(mM(:)*Tx(:).'+nM(:)*Ty(:).'));
 FA2=ones(100,1).'*FA;
 FA3=reshape(FA2,length(Th(:,1)),length(Th(1,:)));
 FAxEcp=abs(FA3).'/max(max(abs(FA3)));
 AA=20*log10(FAxEcp).';
 AA(AA<-35)=-35;
 surf(x1,y1,AA,'EdgeColor','none','LineStyle','none');%,'FaceLighting','phong');
 az = 180;
 el = 90;
 view(az, el);
 axis([-0.5 0.5 -0.5 0.5 -35 0])

Thanks in advance!

Answer 1

[A Jenkins]

Are you allowed to give it a bit more resolution? Changing just the first line solved it for me:

 [Th,Ph]=meshgrid(-20:.1:20,0:1:180);

(or at least it made the difference less noticable, since I do see a small step change in your data when it crosses zero)

[A Jenkins]

Per your comment below dated 19 Oct 2013 at 9:55. Try this:

 surf(x1,y1,AA,'EdgeColor','none','LineStyle','none','FaceColor','interp');

Answer 2

[fasfa]

Thanks A Jenkins,

I noticed that, but the problem is that when the data is big, I can not do that because I have not memory enough (I updated just a simplification of my original problem). And, although giving more resolution gets better result, it does not overcame the problem completely.

Any other thoughts? Thanks again