Le 02/08/2014 09:59, Floyd Xu a écrit :
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];
Generating X and Y creates row vectors. if you want to draw several
curves with one plot instruction, each curve must be passed as a column
of an array
-->X=[x;x]';
-->Y=[y1;y2]';
-->plot(X,Y)
or simpler
plot(x',Y)
Then , I type the plot command :
-->plot(x,y1,x,y2);
The result is shown as below:
Graphic window number 0 (2).bmp
But when I type a command as below:
-->plot(X,Y);
The result is :
Graphic window number 0.bmp
It has an additional line.
Why will this line appear?
Thanks for your reply.
Floyd Xu
Electronic System Design Engineer | Driveline
Office: +86 510 8528 5478 | Mobile: +86 137 7106 3561 |
[email protected] <mailto:[email protected]>
Kongsberg Automotive | No 30 & 32 Xikun Road, Wuxi Singapore Ind.
Park | Wuxi | Jiangsu 214028 | CN
Tel: +86 510 8528 2165 | www.kongsbergautomotive.com
<http://www.kongsbergautomotive.com>
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