plot::Line2d doesn't work

I try to use the function : plot(plot::Line2d([1, 2], [3,-1]))

I get this syntex from : http://mathworks.com/help/symbolic/mupad_ref/plot-line2d.html

but it shows up an error : Unexpected operator, how can I fix it ? Thanks !

[Adam]

Where did you get that syntax from?

[VO Tien Tu]

Yeah, it's the syntax for MUPAD, I got it run in MUPAD editor.

Is this possible to get it run on Matlab editor ? (by calling MUPAD I don't know how)

[Adam]

Well, I'm afraid I don't know anything about Mupad though that link you posted does start with the following big disclaimer:

'Use only in the MuPAD Notebook Interface. This functionality does not run in MATLAB.'

If you are in base Matlab then you simply shouldn't need the plot::Line2d part.

plot( x, y )

is the main Matlab syntax for plotting x points against y points - e.g.

plot( [1, 2], [3, 4] )

(Remember it is really useful if you can fill in the 'Products' part of the question form to let people know when a question involves something like the Symbolic Toolbox as there are a huge number of toolboxes in Matlab and most of us only have a subset of these so syntax from things like Symbolic Toolbox are very unfamiliar to me).

Answer 1

[Walter Roberson]

feval(symengine, 'plot::Line2d', [1, 2], [3,-1])

I do not know what the result will be.