changing the axis of a plot

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Locks
Locks 2013-3-24
x=[0:0.01:20]
y=max(x-10,0)-blsprice(10,10,0.02,0.2,0.2)
plot(x,y)
xlabel('Stock Price at Maturity ($)');
ylabel('Gain ($)');
axis([0 20 -2 10]);
set(gca,'Box','off')
The command above gives me the payoff of an call option, unfortunately the x-axis goes from -2 to 20, but I would like to see the x-axis from 0 to 20, so the starting point should be y=0 and not y=-2. However the plot should still show the y-axis from -2 to 10 and the negative values for y

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回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-3-24
xlim([0 20])
ylim([0 10])
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Locks
Locks 2013-3-24
that just gives me a single line, is that correct? I am not sure how I have to handle this code to combine it with mine, could you give me an example?

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