error using reshape for a specific case

the code gives a g-code for fdm prunters and it works good with all the STL files except the last two; it gives an error as shown below:

Error using reshape

Product of known dimensions, 4, not divisible into total number of elements, 2.

Error in infill_lines_rec (line 71)

c_line=reshape(c_point,4,[])';

the reshape fct is used in line 71 as below:

end

[c_point_t,~,ib] = unique(c_point,'rows');

c_point = c_point_t(accumarray(ib,1)==1,:);

c_line=[];

if ~isempty(c_point)

c_point=sortrows(c_point,1)';

c_line=reshape(c_point,4,[])';

end

c_lineout=[c_lineout;c_line];

end

if angle~=0

end

waiting for your help to make this file work. thanks

Answer 1

[Fangjun Jiang]

reshape(1:8,4,[])

ans = 4×2

1 5 2 6 3 7 4 8

reshape(1:2,4,[])

Error using reshape
Product of known dimensions, 4, not divisible into total number of elements, 2.