function plota_celula(pos,CD,LD,NC,eps)

LC = LD ./ NC; %tamanho da celula
CC = CD - 0.5*LD + (pos .* LC); %canto inferior da celula
xmin = CC(1) + eps;
xmax = CC(1) + LC(1) - eps;
ymin = CC(2) + eps;
ymax = CC(2) + LC(2) - eps;
hold on
plot([xmin,xmin,xmax,xmax,xmin],...
    [ymin,ymax,ymax,ymin,ymin]);

