MATLAB绘制栅格图

坐标在栅格中心a = [1 0 1 1 1 1 1 1 1 1 1 1 1 0 0 1 1 1 0 0 1 0 1 0 0 1 1 1 1 1 0 0 1 1 1 1 0 1 1 0