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Invalid first data argument

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The following code:
plot(x,y,'Marker','*','Color','r',x2,y2,'Marker','--','Color','b')
generates this error: "Invalid first data argument".
here x, y and x2, y2 are arrays of same size.

  2 Comments

Kiran Sagar
Kiran Sagar on 7 Apr 2016
x = [1 2 3] ;
y = 2*x ;
x2 = x ;
y2 = x ;
Image Analyst
Image Analyst on 8 Apr 2016
Doesn't matter now. I told you how to fix it below.

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Accepted Answer

Image Analyst
Image Analyst on 7 Apr 2016
Edited: Image Analyst on 7 Apr 2016
'--' is not a valid choice for 'Marker'. Use a valid marker. See the help for a list of them.
Try this:
plot(x,y,'r*-', x2,y2,'bd-');

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