[Scilab-users] A question about plotting

[徐湛]

Hi , All:

 

I have a question about plotting.

 

I want to plot 2 lines in a graphic , so I type the command as below:

 

-->x=linspace(0,2*%pi,40);

 

-->y1=sin(x)

 

-->y2=cos(x);

 

-->X=[x,x];

 

-->Y=[y1,y2];

 

Then , I type the plot command :

 

-->plot(x,y1,x,y2);  

 

The result is shown as below:

 

 

But when I type a command as below:

 

-->plot(X,Y);

 

The result is :

 

It  has an additional line.

 

Why will this line appear?

 

Thanks for your reply.

 

 

 

 
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