incorrect or unexpected brackets

[newx, newy] = ind2sub([nrow, ncol], candidates(whichleast));
next = [next;(end,:)+{newx, newy}];

get error unexpected brackets

[Stephen23]

need use MATLAB syntax

Answer 1

[Guillaume]

Well, yes, the (end, :) can only work as indexing so should follow the name of a variable but comes after a ;.

On top of that, even if that didn't produce an error, you'd have the error that you try to add a cell array to something. + (addition) is not defined for cell arrays.

All in all, I've no idea what that 2nd line is supposed to do.

[Ken]

I have 4 cells around a cell in question arranged in a cross. I want to put these 4 cells (their x,y coordinates) in an array called next.

[Image Analyst]

Why use cells at all? Why complicate your life? It sounds like you can use just normal, simple, numerical arrays. Why not do that?

[Guillaume]

Assuming the cell in question has coordinates x, y, then

next = [x-1, y;  
        x, y+1;
        x+1, y;
        x, y-1];

would do what you want, if I understood correctly.

Note: I missed at first, that it appears that you're confusing x, y and row, column. Traditionally, x is the horizontal coordinates which would correspond to column, and y the vertical up which would correspond to row (or better height - row). So your ind2sub call should probably read:

[newy, newx] = ind2sub([nrow, ncol], candidates(whichleast)); %note the inversion: [y,x] not [x,y]

[Ken]

Tried this - still get same error

Answer 2

[Greg Heath]

I don't think

 a. Square brackets are allowed on the RHS
 b. Round  brackets are allowed on the LHS

Hope this helps.

Thank you for formally accepting my answer

Greg

[Stephen23]

"I don't think"

"a. Square brackets are allowed on the RHS"

 a = [1,2];

"b. Round brackets are allowed on the LHS"

 a(2) = 3;

[Ken]

Get same error with: [newy, newx] = ind2sub([nrow, ncol], candidates(whichleast));