ConstantLine was introduced in 2018b:
https://de.mathworks.com/help/matlab/ref/matlab.graphics.chart.decoration.constantline-properties.html

when using for example:
xline(4)
This error appears:
`Error using matlab2tikz>handleAllChildren (line 730)
I don't know how to handle this object: constantline
Error in matlab2tikz>drawAxes (line 880)
[m2t, childrenEnvs] = handleAllChildren(m2

Docs mention old code

x = ca.MX.sym('x' ,2) 
y = ca.MX.sym('y',1)
f = ca.Function('f',[x,y],[x,ca.sin(y)*x],[ 'x','y'] ,['r','q'])

f.jacobian('x','q')

(Not needed for JOSS review) directly related to #31
I really like the package 🙂 but I think it makes a whole lot of sense to me since I use both MATLAB and R on a regular basis.
I know the documentation is currently a work in progress and it can be quite time-consuming. However, it might be worth considering writing a pure MATLAB users intro tutorial as the grammar of graphics might be comple

I'd like to make a PR for FieldTrip and run all the tests before submitting it so I can check that I haven't broken anything. How do you run the full test suite? I don't see anything in the README or the FieldTrip documentation on it.

Similarly to LaTeX table export we can also have simple CSV export so that data can be imported to spreadsheet editor.

Can you give an example about how to use parameter 'outputFcn' in main function without GUI.
The format is like below:

1. for r = 1 : 10
2. main('-algorithm',@ARMOEA,'-problem',@DTLZ5,'-save',1,'-run',r);
3. end