how can i combine two graph which is linear and semilogy into one graph by using legend,the input is same for the linear and log graph

Vg=[-2:2:10]

while A<=4

Id = Up*Cox/2*A*((Vg-Vth).^2);

f = semilogy(Vg,Id);

subplot(2,2,B),plotyy(Vg,Id,'- o k',Vg,f,'- x b');

hold on;

A=A*2;

B=B+1;

end

Answer 1

[Chunru]

x = (1:10);
y1 = rand(10,1);
y2 = 10.^(3*randn(10,1));
yyaxis left
plot(x, y1, 'ro-')
yyaxis right
semilogy(x, y2, 'b*-')

[Jason Tan Jia Sheng]

so is it mean like dont have to use the legend in order to do this