@tomleslie One question: your Maple displays matrix contents but mine does not. How do I change mine?

It really helps if you post your code as text or as .mw file.

https://www.mathworks.com/matlabcentral/answers/243883-weighted-sum-approach-method-initialization

@acer Do You recognize this hierarchy :com. maplesoft. mathdoc. model. plot. PlotException

I never knew it existed. Is it documented?

The error was generated with COLOR(RGBA, ...) structure.

Please post the above in text or worksheet form.

@mschneider This result is correct.

@acer I was rewriting my answer while you replied.

@Dark Energy Works for me...

@amrramadaneg Works fine...

with(plots):
V := view = [0..2, 0..2];
display(arrow([1,0]), arrow([0,1]), V);
display( plottools[transform]((x,y) -> [x+1, y+1])(%), V);

This is an incomplete specification of a problem. No one can help you with it until you post f & g.

Post the code text or the original file please.

@ajfriedlan See the difference in :
(1,2,3)[1], (1)[1];
[1,2,3][1], [1][1];

Your code uses the first version, it should be using the second. That is:
 Rootz := [solve](epsilon__k(q, J__a[l])-epsilon__k(kappa, J__a[l])+.16*e = 0);

You can always compose plots in the end, so I suggest you work on them sparately first.

@WJRAGG Simply evaluate the following list: [K, P, Q, ap]; and print the output here.

The parameters : {K, P, Q, ap} are missing from your code.