Error creating or updating Surface

Question

0 个投票

b=0.25:0.01:0.5;
f1=(10^(1/3)*(10.^b-2.^b))/log(8)
f2=2*(10^(1/3)*(10.^b-2.^b))/log(8)
x=-2:0.5:-6;
y=-6:0.5:-5;
[X,Y]=ndgrid(x,y);
Z=cos(Y)+X.*Y;
subplot(211);
hL=plot(b,[f1' f2']);
set(hL(1),'linestyle','--');
set(hL(2),'marker','x');
set(gca,'Xcolor','g','Ycolor','g');
legend('f1','f2');
title('My graph f1 and f2');
subplot(212);
surf(X,Y,Z,'facecolor','b','linestyle','none')
a4=gca();
xlabel('X') 
ylabel('Y')
zlabel('Z')
title('My graph f3');
Warning: Error creating or updating Surface
 Error in value of property  XData
 Array is wrong shape or size
 