我有一个矩阵,如下
structure(c(4407, 0, 53, 46, 50, 0, 4407, 0, 0, 0, 53, 0, 742,
408, 411, 46, 0, 408, 688, 464, 50, 0, 411, 464, 672, 40, 0,
447, 359, 382, 72, 0, 439, 342, 356, 35, 0, 350, 321, 344, 45,
0, 365, 341, 364, 42, 0, 498, 372, 376, 102, 0, 304, 333, 340,
52, 0, 396, 354, 343, 52, 0, 377