Multiple Graph plotting manipulation in matlab

x = -100:1:100;
y1 = 0.8*x; %L(x)
y2 = (-27/97750)*x.^3+(4/5)*x; %g(x)
y3 = (-81/9775)*x + (1726/1955)*x -(108/391); %q(x)
y4 = (27/97750)*x.^3 + (-162/1955)*x.^2 +6.6864*x -116.2103; %h(x)
y5 = -1.6*x + 120; %L2(x)
y6 = -0.012*x.^2 + 0.8*x; %f(x)
hold on;
plot(x,y1,'-r')
plot(x,y2,'-g')
plot(x,y3,'-b')
plot(x,y4,'-m')
plot(x,y5,'-y')
plot(x,y6,'-k')
legend('L(X)','g(x)','q(x)','h(x)','L2(x)','f(x)','location','northeast')
xlabel('x-axis')
ylabel('y-axis')
This is my code.
this is the output. Instead of this, i need it to show like this.
any idea how?

回答(2 个)

There are many differences between those figures. The most significant one seems to be the differences in range of the y-axis. You can fix that with
ylim([-100 50])
Is that enough? If not, can you please edit your question to itemize the differences you are hoping to rectify?
See Matt Fig’s axescenter function to put the axes in the centre of the plot.
NOTE: It was written in R2007a, so it may not be compatible with R2014b and later. (I haven’t used it recently.)

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2015-8-23

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2015-8-23

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